多线程下Lock、Level-Lock、Lock-Free、ReaderWriterLock、ReaderWriterLockSlim性能比较
多线程环境下使用那种锁往往凭个人感觉，缺乏测试数据的支持很容易走入误区，就像我知道的很多人就觉得Lock好慢好慢，Lock-Free 就能飞起来一样。
下面对Lock、Level-Lock、Lock-Free、ReaderWriterLock、ReaderWriterLockSlim 这几种锁分别做下性能测试，先说明一下：
1. Lock lock关键字，排他锁
2. Level-Lock 就是对lock数据分块加锁，大并发时可很大降低锁的可能性
3. Lock-Free 如InterLocked 利用CPU的原子操作，CAS，Spin Lock技巧实现，一般比较复杂（这里我们使用.Net 4中的System.Collection.Concurrent.ConcurrentDictionary<,>实现）
4. ReaderWriterLock unmananged 读写锁
5. ReaderWriterLockSlim .Net 4 中managed 读写锁
测试环境：T420 （I5 2520M/2.5G/8G）
测试环境比较重要，我机器CPU只是2核4线程，而现网跑的基本在16核以上。因此多线程测试和实际效果可能会有很大差距，测试数据仅仅供参考。
下面提供测试代码，有条件同学如果能弄台好点的测试机测试下，共享下结果那就不胜感激。
下面是测试结果：
下面是结果：(1000W的字典，做1000W次操作)
1. Dictionary 单线程操作效率：
read_* 2337ms 10000000 items 4278990 items/s
read_0 2337ms 10000000 items 4278990 items/s
--+------+-----+--------+--------+-------+---------+----
write_* 2856ms 10000000 items 3501400 items/s
write_0 2856ms 10000000 items 3501400 items/s
--+------+-----+--------+--------+-------+---------+----
delete_* 2207ms 10000000 items 4531037 items/s
delete_0 2207ms 10000000 items 4531037 items/s
--+------+-----+--------+--------+-------+---------+----
单线程，基本都在400W次/s. CPU 占用25%。
2. Lock Dictionary
read_* 2560ms 10000000 items 3906250 items/s
read_0 2560ms 10000000 items 3906250 items/s
--+------+-----+--------+--------+-------+---------+----
write_* 3150ms 10000000 items 3174603 items/s
write_0 3150ms 10000000 items 3174603 items/s
--+------+-----+--------+--------+-------+---------+----
delete_* 2364ms 10000000 items 4230118 items/s
delete_0 2364ms 10000000 items 4230118 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 2959ms 3224949 items 1089877 items/s
read_0 2959ms 3224949 items 1089877 items/s
--+------+-----+------
delete_* 2947ms 3300323 items 1119892 items/s
delete_0 2947ms 3300323 items 1119892 items/s
--+------+-----+------
write_* 2953ms 3474728 items 1176677 items/s
write_0 2953ms 3474728 items 1176677 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 2024ms 3985786 items 1969261 items/s
read_0 2024ms 2378444 items 1175120 items/s
read_1 2024ms 1607342 items 794141 items/s
--+------+-----+------
delete_* 2013ms 3364222 items 1671247 items/s
delete_0 2016ms 2479708 items 1230013 items/s
delete_1 2011ms 884514 items 439837 items/s
--+------+-----+------
write_* 2022ms 2649992 items 1310579 items/s
write_0 2024ms 1313185 items 648806 items/s
write_1 2021ms 1336807 items 661458 items/s
--+------+-----+--------+--------+-------+---------+----
write_* 3152ms 3073497 items 975094 items/s
write_0 3159ms 877536 items 277789 items/s
write_1 3154ms 965414 items 306091 items/s
write_2 3144ms 1230547 items 391395 items/s
--+------+-----+------
delete_* 3091ms 4149466 items 1342434 items/s
delete_0 3106ms 961547 items 309577 items/s
delete_1 3087ms 811856 items 262991 items/s
delete_2 3080ms 2376063 items 771449 items/s
--+------+-----+------
read_* 3169ms 2777037 items 876313 items/s
read_0 3175ms 791828 items 249394 items/s
read_1 3169ms 908187 items 286584 items/s
read_2 3165ms 1077022 items 340291 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 2673ms 10000000 items 3741114 items/s
read_0 2674ms 4928616 items 1843162 items/s
read_1 2673ms 5071384 items 1897263 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 2809ms 10000000 items 3559985 items/s
read_0 2814ms 3109810 items 1105120 items/s
read_1 2808ms 3570716 items 1271622 items/s
read_2 2806ms 3319474 items 1182991 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 3063ms 10000000 items 3264773 items/s
read_0 3074ms 2422274 items 787987 items/s
read_1 3069ms 2804878 items 913938 items/s
read_2 3058ms 2364131 items 773097 items/s
read_3 3053ms 2408717 items 788967 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 3342ms 10000000 items 2992220 items/s
read_0 3361ms 1192407 items 354777 items/s
read_1 3356ms 2872306 items 855871 items/s
read_2 3349ms 2236479 items 667805 items/s
read_3 3336ms 842120 items 252434 items/s
read_4 3330ms 815203 items 244805 items/s
read_5 3321ms 2041485 items 614719 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 3143ms 10000000 items 3181673 items/s
read_0 3166ms 1211817 items 382759 items/s
read_1 3166ms 299314 items 94540 items/s
read_2 3166ms 1140744 items 360310 items/s
read_3 3159ms 748299 items 236878 items/s
read_4 3151ms 904550 items 287067 items/s
read_5 3144ms 252157 items 80202 items/s
read_6 3132ms 3109588 items 992844 items/s
read_7 3131ms 921935 items 294453 items/s
read_8 3114ms 1159175 items 372246 items/s
read_9 3107ms 252421 items 81242 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 3145ms 8816919 items 2803471 items/s
read_0 3154ms 652354 items 206833 items/s
read_1 3154ms 725380 items 229987 items/s
read_2 3154ms 593207 items 188080 items/s
read_3 3154ms 2437985 items 772981 items/s
read_4 3152ms 648044 items 205597 items/s
read_5 3151ms 710051 items 225341 items/s
read_6 3151ms 1159138 items 367863 items/s
read_7 3148ms 599157 items 190329 items/s
read_8 3121ms 616668 items 197586 items/s
read_9 3114ms 674935 items 216742 items/s
--+------+-----+------
write_* 3101ms 1183081 items 381515 items/s
write_0 3101ms 1183081 items 381515 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 2965ms 9524695 items 3212376 items/s
read_0 3111ms 692907 items 222728 items/s
read_1 3104ms 535677 items 172576 items/s
read_2 3088ms 528330 items 171091 items/s
read_3 3082ms 454461 items 147456 items/s
read_4 3046ms 499212 items 163891 items/s
read_5 3010ms 487582 items 161987 items/s
read_6 2991ms 505601 items 169040 items/s
read_7 2988ms 406797 items 136143 items/s
read_8 2988ms 532080 items 178072 items/s
read_9 2978ms 558057 items 187393 items/s
read_10 2956ms 409198 items 138429 items/s
read_11 2948ms 328490 items 111428 items/s
read_12 2939ms 507699 items 172745 items/s
read_13 2930ms 458041 items 156327 items/s
read_14 2913ms 468107 items 160695 items/s
read_15 2892ms 412851 items 142756 items/s
read_16 2879ms 484964 items 168448 items/s
read_17 2849ms 467826 items 164207 items/s
read_18 2822ms 419699 items 148723 items/s
read_19 2800ms 367116 items 131112 items/s
--+------+-----+------
write_* 2790ms 475305 items 170360 items/s
write_0 2790ms 475305 items 170360 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 3069ms 5479136 items 1785316 items/s
read_0 3152ms 233205 items 73986 items/s
read_1 3152ms 443136 items 140588 items/s
read_2 3152ms 357287 items 113352 items/s
read_3 3146ms 223279 items 70972 items/s
read_4 3136ms 201622 items 64292 items/s
read_5 3131ms 324597 items 103671 items/s
read_6 3113ms 251971 items 80941 items/s
read_7 3109ms 205629 items 66139 items/s
read_8 3096ms 192179 items 62073 items/s
read_9 3088ms 304387 items 98570 items/s
read_10 3056ms 262619 items 85935 items/s
read_11 3054ms 299693 items 98131 items/s
read_12 3044ms 221596 items 72797 items/s
read_13 3023ms 277341 items 91743 items/s
read_14 3015ms 291290 items 96613 items/s
read_15 3009ms 257143 items 85457 items/s
read_16 2989ms 251629 items 84185 items/s
read_17 2985ms 366428 items 122756 items/s
read_18 2973ms 206825 items 69567 items/s
read_19 2964ms 307280 items 103670 items/s
--+------+-----+------
delete_* 2449ms 1952409 items 797227 items/s
delete_0 2645ms 271151 items 102514 items/s
delete_1 2625ms 225453 items 85886 items/s
delete_2 2561ms 142052 items 55467 items/s
delete_3 2530ms 223046 items 88160 items/s
delete_4 2480ms 181484 items 73179 items/s
delete_5 2435ms 184849 items 75913 items/s
delete_6 2383ms 141900 items 59546 items/s
delete_7 2322ms 196285 items 84532 items/s
delete_8 2276ms 187952 items 82579 items/s
delete_9 2240ms 198237 items 88498 items/s
--+------+-----+------
write_* 2822ms 2568455 items 910154 items/s
write_0 2937ms 203495 items 69286 items/s
write_1 2901ms 314688 items 108475 items/s
write_2 2891ms 290887 items 100618 items/s
write_3 2879ms 308520 items 107162 items/s
write_4 2841ms 190565 items 67076 items/s
write_5 2815ms 249638 items 88681 items/s
write_6 2808ms 220699 items 78596 items/s
write_7 2774ms 295309 items 106456 items/s
write_8 2717ms 216728 items 79767 items/s
write_9 2662ms 277926 items 104404 items/s
--+------+-----+--------+--------+-------+---------+----
单线程下，效率和无锁情况下效率稍差，影响不大；在很高线程并发情况下也能达到300w次/s 的处理能力，当然基于互斥操作不可能超过单线程的速度。
单线程下CPU 25%，随着线程数增加CPU占用很容易到达100%，太多的锁竞争占用大量的CPU资源。
3. Level-Lock Dictionary
1.Level=20（ 也就是20lock，20个dict)
read_* 2710ms 10000000 items 3690036 items/s
read_0 2710ms 10000000 items 3690036 items/s
--+------+-----+--------+--------+-------+---------+----
write_* 2963ms 10000000 items 3374957 items/s
write_0 2963ms 10000000 items 3374957 items/s
--+------+-----+--------+--------+-------+---------+----
delete_* 2477ms 10000000 items 4037141 items/s
delete_0 2477ms 10000000 items 4037141 items/s
--+------+-----+--------+--------+-------+---------+----
write_* 1398ms 3909706 items 2796642 items/s
write_0 1398ms 3909706 items 2796642 items/s
--+------+-----+------
delete_* 1398ms 2482589 items 1775814 items/s
delete_0 1398ms 2482589 items 1775814 items/s
--+------+-----+------
read_* 1398ms 3607705 items 2580618 items/s
read_0 1398ms 3607705 items 2580618 items/s
--+------+-----+--------+--------+-------+---------+----
delete_* 1258ms 2511943 items 1996775 items/s
delete_0 1340ms 906632 items 676591 items/s
delete_1 1177ms 1605311 items 1363900 items/s
--+------+-----+------
write_* 1484ms 4145435 items 2793419 items/s
write_0 1529ms 1212737 items 793156 items/s
write_1 1440ms 2932698 items 2036595 items/s
--+------+-----+------
read_* 1564ms 3342622 items 2137226 items/s
read_0 1564ms 1879593 items 1201785 items/s
read_1 1564ms 1463029 items 935440 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1483ms 2785038 items 1877975 items/s
read_0 1491ms 1283044 items 860525 items/s
read_1 1491ms 591404 items 396649 items/s
read_2 1469ms 910590 items 619870 items/s
--+------+-----+------
write_* 1324ms 4480945 items 3384399 items/s
write_0 1379ms 1783564 items 1293374 items/s
write_1 1310ms 1010326 items 771241 items/s
write_2 1283ms 1687055 items 1314929 items/s
--+------+-----+------
delete_* 1104ms 2734017 items 2476464 items/s
delete_0 1160ms 888647 items 766075 items/s
delete_1 1125ms 1121904 items 997248 items/s
delete_2 1028ms 723466 items 703760 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1322ms 10000000 items 7564296 items/s
read_0 1322ms 5194179 items 3929031 items/s
read_1 1322ms 4805821 items 3635265 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1090ms 10000000 items 9174311 items/s
read_0 1103ms 3921221 items 3555050 items/s
read_1 1103ms 3312706 items 3003359 items/s
read_2 1064ms 2766073 items 2599692 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1594ms 10000000 items 6273525 items/s
read_0 1634ms 3093719 items 1893340 items/s
read_1 1634ms 2374941 items 1453452 items/s
read_2 1602ms 2188744 items 1366257 items/s
read_3 1506ms 2342596 items 1555508 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1551ms 10000000 items 6447453 items/s
read_0 1640ms 2985340 items 1820329 items/s
read_1 1640ms 1066411 items 650250 items/s
read_2 1592ms 1648232 items 1035321 items/s
read_3 1509ms 2514308 items 1666208 items/s
read_4 1489ms 1131922 items 760189 items/s
read_5 1436ms 653787 items 455283 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1382ms 10000000 items 7235890 items/s
read_0 1671ms 1619683 items 969289 items/s
read_1 1666ms 1535556 items 921702 items/s
read_2 1628ms 1418188 items 871122 items/s
read_3 1540ms 1374893 items 892787 items/s
read_4 1474ms 536288 items 363831 items/s
read_5 1448ms 717284 items 495361 items/s
read_6 1325ms 851410 items 642573 items/s
read_7 1213ms 958245 items 789979 items/s
read_8 1052ms 638253 items 606704 items/s
read_9 811ms 350200 items 431812 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1299ms 9411579 items 7245249 items/s
read_0 1411ms 890482 items 631099 items/s
read_1 1411ms 1407221 items 997321 items/s
read_2 1411ms 1242786 items 880783 items/s
read_3 1405ms 1668207 items 1187335 items/s
read_4 1370ms 989863 items 722527 items/s
read_5 1313ms 340363 items 259225 items/s
read_6 1287ms 754871 items 586535 items/s
read_7 1177ms 719554 items 611345 items/s
read_8 1172ms 644930 items 550281 items/s
read_9 1035ms 753302 items 727828 items/s
--+------+-----+------
write_* 819ms 588421 items 718462 items/s
write_0 819ms 588421 items 718462 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 695ms 10000000 items 14388489 items/s
read_0 1525ms 906637 items 594516 items/s
read_1 1525ms 1568371 items 1028440 items/s
read_2 1489ms 1862496 items 1250836 items/s
read_3 1394ms 699952 items 502117 items/s
read_4 1393ms 948093 items 680612 items/s
read_5 1381ms 578078 items 418593 items/s
read_6 1223ms 670020 items 547849 items/s
read_7 1159ms 1083856 items 935164 items/s
read_8 1019ms 418721 items 410913 items/s
read_9 732ms 519766 items 710062 items/s
read_10 584ms 357169 items 611590 items/s
read_11 378ms 229095 items 606071 items/s
read_12 117ms 157746 items 1348256 items/s
read_13 0ms 0 items oooo items/s
read_14 0ms 0 items oooo items/s
read_15 0ms 0 items oooo items/s
read_16 0ms 0 items oooo items/s
read_17 0ms 0 items oooo items/s
read_18 0ms 0 items oooo items/s
read_19 0ms 0 items oooo items/s
--+------+-----+------
write_* 0ms 0 items oooo items/s
write_0 0ms 0 items oooo items/s
--+------+-----+--------+--------+-------+---------+----
read_* 733ms 10000000 items 13642564 items/s
read_0 1578ms 1382188 items 875911 items/s
read_1 1573ms 1253791 items 797069 items/s
read_2 1533ms 844080 items 550606 items/s
read_3 1450ms 1400782 items 966056 items/s
read_4 1447ms 787415 items 544170 items/s
read_5 1353ms 762434 items 563513 items/s
read_6 1248ms 1113228 items 892009 items/s
read_7 1132ms 981544 items 867088 items/s
read_8 981ms 449161 items 457860 items/s
read_9 839ms 187875 items 223927 items/s
read_10 668ms 404216 items 605113 items/s
read_11 460ms 213684 items 464530 items/s
read_12 307ms 66234 items 215745 items/s
read_13 108ms 153368 items 1420074 items/s
read_14 0ms 0 items oooo items/s
read_15 0ms 0 items oooo items/s
read_16 0ms 0 items oooo items/s
read_17 0ms 0 items oooo items/s
read_18 0ms 0 items oooo items/s
read_19 0ms 0 items oooo items/s
--+------+-----+------
write_* 0ms 0 items oooo items/s
write_0 0ms 0 items oooo items/s
write_1 0ms 0 items oooo items/s
write_2 0ms 0 items oooo items/s
write_3 0ms 0 items oooo items/s
write_4 0ms 0 items oooo items/s
write_5 0ms 0 items oooo items/s
write_6 0ms 0 items oooo items/s
write_7 0ms 0 items oooo items/s
write_8 0ms 0 items oooo items/s
write_9 0ms 0 items oooo items/s
--+------+-----+------
delete_* 0ms 0 items oooo items/s
delete_0 0ms 0 items oooo items/s
delete_1 0ms 0 items oooo items/s
delete_2 0ms 0 items oooo items/s
delete_3 0ms 0 items oooo items/s
delete_4 0ms 0 items oooo items/s
delete_5 0ms 0 items oooo items/s
delete_6 0ms 0 items oooo items/s
delete_7 0ms 0 items oooo items/s
delete_8 0ms 0 items oooo items/s
delete_9 0ms 0 items oooo items/s
--+------+-----+--------+--------+-------+---------+----
处理能力多线程下能轻松超过1000w每秒，充分的利用了多核CPU的能力。
CPU在40%~70%样子，因为Lock分区线程竞争较少，但CPU也无法100%的利用。
2.Level=200（ 也就是200lock，200个dict)
相比Level=20 速度稍快，但不明显，CPU利用率高一些了。
4.Lock-Free 也许我用System.ConCurrentDictionary不太合适，因为这并不是一个很理想的实现，不过dict实现成这样也算难得。
read_* 2640ms 10000000 items 3787878 items/s
read_0 2640ms 10000000 items 3787878 items/s
--+------+-----+--------+--------+-------+---------+----
write_* 2877ms 10000000 items 3475842 items/s
write_0 2877ms 10000000 items 3475842 items/s
--+------+-----+--------+--------+-------+---------+----
delete_* 2441ms 10000000 items 4096681 items/s
delete_0 2441ms 10000000 items 4096681 items/s
--+------+-----+--------+--------+-------+---------+----
delete_* 1271ms 2516657 items 1980060 items/s
delete_0 1271ms 2516657 items 1980060 items/s
--+------+-----+------
write_* 1282ms 2634093 items 2054674 items/s
write_0 1282ms 2634093 items 2054674 items/s
--+------+-----+------
read_* 1283ms 4849250 items 3779618 items/s
read_0 1283ms 4849250 items 3779618 items/s
--+------+-----+--------+--------+-------+---------+----
delete_* 1247ms 2150275 items 1724358 items/s
delete_0 1274ms 1551075 items 1217484 items/s
delete_1 1221ms 599200 items 490745 items/s
--+------+-----+------
read_* 1380ms 2173328 items 1574875 items/s
read_0 1383ms 666282 items 481765 items/s
read_1 1377ms 1507046 items 1094441 items/s
--+------+-----+------
write_* 1346ms 5676397 items 4217234 items/s
write_0 1371ms 3864136 items 2818479 items/s
write_1 1322ms 1812261 items 1370847 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1398ms 3266302 items 2336410 items/s
read_0 1405ms 701388 items 499208 items/s
read_1 1405ms 1183968 items 842681 items/s
read_2 1386ms 1380946 items 996353 items/s
--+------+-----+------
delete_* 1113ms 2539759 items 2281903 items/s
delete_0 1160ms 1202885 items 1036969 items/s
delete_1 1105ms 667508 items 604079 items/s
delete_2 1076ms 669366 items 622087 items/s
--+------+-----+------
write_* 1268ms 4193939 items 3307522 items/s
write_0 1328ms 1897418 items 1428778 items/s
write_1 1277ms 760482 items 595522 items/s
write_2 1200ms 1536039 items 1280032 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1120ms 10000000 items 8928571 items/s
read_0 1121ms 5199541 items 4638305 items/s
read_1 1120ms 4800459 items 4286124 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1159ms 10000000 items 8628127 items/s
read_0 1173ms 3445348 items 2937210 items/s
read_1 1168ms 3450978 items 2954604 items/s
read_2 1136ms 3103674 items 2732107 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1093ms 10000000 items 9149130 items/s
read_0 1123ms 2283910 items 2033757 items/s
read_1 1123ms 2982767 items 2656070 items/s
read_2 1100ms 2821584 items 2565076 items/s
read_3 1027ms 1911739 items 1861479 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1041ms 10000000 items 9606147 items/s
read_0 1113ms 1726655 items 1551352 items/s
read_1 1113ms 1536080 items 1380125 items/s
read_2 1079ms 2419089 items 2241973 items/s
read_3 1015ms 2292703 items 2258820 items/s
read_4 982ms 1084573 items 1104453 items/s
read_5 949ms 940900 items 991464 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1023ms 10000000 items 9775171 items/s
read_0 1159ms 1697628 items 1464735 items/s
read_1 1159ms 929654 items 802117 items/s
read_2 1125ms 839433 items 746162 items/s
read_3 1093ms 897699 items 821316 items/s
read_4 1062ms 1179313 items 1110464 items/s
read_5 1060ms 1098892 items 1036690 items/s
read_6 981ms 1072347 items 1093116 items/s
read_7 899ms 691808 items 769530 items/s
read_8 865ms 996749 items 1152310 items/s
read_9 827ms 596477 items 721253 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1033ms 9510098 items 9206290 items/s
read_0 1234ms 1433667 items 1161804 items/s
read_1 1228ms 1337598 items 1089249 items/s
read_2 1158ms 1613906 items 1393701 items/s
read_3 1075ms 832036 items 773986 items/s
read_4 1042ms 741827 items 711926 items/s
read_5 1003ms 768494 items 766195 items/s
read_6 989ms 609960 items 616744 items/s
read_7 930ms 961334 items 1033692 items/s
read_8 865ms 711270 items 822277 items/s
read_9 807ms 500006 items 619586 items/s
--+------+-----+------
write_* 764ms 489902 items 641232 items/s
write_0 764ms 489902 items 641232 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 715ms 10000000 items 13986013 items/s
read_0 1137ms 975731 items 858162 items/s
read_1 1136ms 1127366 items 992399 items/s
read_2 1116ms 1402088 items 1256351 items/s
read_3 1063ms 942533 items 886672 items/s
read_4 1031ms 456334 items 442612 items/s
read_5 984ms 811468 items 824662 items/s
read_6 931ms 514892 items 553052 items/s
read_7 891ms 645952 items 724974 items/s
read_8 868ms 112137 items 129190 items/s
read_9 774ms 497543 items 642820 items/s
read_10 773ms 461019 items 596402 items/s
read_11 677ms 300201 items 443428 items/s
read_12 659ms 294319 items 446614 items/s
read_13 584ms 350267 items 599772 items/s
read_14 486ms 308896 items 635588 items/s
read_15 468ms 474735 items 1014391 items/s
read_16 316ms 198826 items 629196 items/s
read_17 265ms 76570 items 288943 items/s
read_18 118ms 35726 items 302762 items/s
read_19 33ms 13397 items 405969 items/s
--+------+-----+------
write_* 0ms 0 items oooo items/s
write_0 0ms 0 items oooo items/s
--+------+-----+--------+--------+-------+---------+----
write_* 42ms 136456 items 3248952 items/s
write_0 184ms 119755 items 650842 items/s
write_1 121ms 1 items 8 items/s
write_2 100ms 16699 items 166990 items/s
write_3 23ms 1 items 43 items/s
write_4 0ms 0 items oooo items/s
write_5 0ms 0 items oooo items/s
write_6 0ms 0 items oooo items/s
write_7 0ms 0 items oooo items/s
write_8 0ms 0 items oooo items/s
write_9 0ms 0 items oooo items/s
--+------+-----+------
read_* 883ms 9863544 items 11170491 items/s
read_0 1272ms 1055835 items 830058 items/s
read_1 1267ms 1127178 items 889643 items/s
read_2 1235ms 998866 items 808798 items/s
read_3 1203ms 906909 items 753872 items/s
read_4 1137ms 302782 items 266299 items/s
read_5 1123ms 599917 items 534209 items/s
read_6 1061ms 507196 items 478035 items/s
read_7 1049ms 487007 items 464258 items/s
read_8 1027ms 532442 items 518444 items/s
read_9 974ms 499217 items 512543 items/s
read_10 937ms 375075 items 400293 items/s
read_11 871ms 772866 items 887331 items/s
read_12 779ms 325711 items 418114 items/s
read_13 686ms 290248 items 423102 items/s
read_14 626ms 210467 items 336209 items/s
read_15 624ms 239014 items 383035 items/s
read_16 620ms 181094 items 292087 items/s
read_17 558ms 253303 items 453948 items/s
read_18 353ms 136337 items 386223 items/s
read_19 263ms 62080 items 236045 items/s
--+------+-----+------
delete_* 0ms 0 items oooo items/s
delete_0 0ms 0 items oooo items/s
delete_1 0ms 0 items oooo items/s
delete_2 0ms 0 items oooo items/s
delete_3 0ms 0 items oooo items/s
delete_4 0ms 0 items oooo items/s
delete_5 0ms 0 items oooo items/s
delete_6 0ms 0 items oooo items/s
delete_7 0ms 0 items oooo items/s
delete_8 0ms 0 items oooo items/s
delete_9 0ms 0 items oooo items/s
--+------+-----+--------+--------+-------+---------+----
非常理想的并发读写能力，在并发处理上相比Level-Lock稍差，只读性能最高。
CPU占用为一般在25%，偶尔能到50%，资源占用很低但效率很高。但为什么不能充分利用到所有CPU资源呢?
5.ReaderWriterLock
read_* 4103ms 10000000 items 2437241 items/s
read_0 4103ms 10000000 items 2437241 items/s
--+------+-----+--------+--------+-------+---------+----
write_* 4771ms 10000000 items 2095996 items/s
write_0 4771ms 10000000 items 2095996 items/s
--+------+-----+--------+--------+-------+---------+----
delete_* 3852ms 10000000 items 2596053 items/s
delete_0 3852ms 10000000 items 2596053 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 3593ms 3252197 items 905148 items/s
read_0 3593ms 3252197 items 905148 items/s
--+------+-----+------
delete_* 3581ms 3221796 items 899691 items/s
delete_0 3581ms 3221796 items 899691 items/s
--+------+-----+------
write_* 3593ms 3526007 items 981354 items/s
write_0 3593ms 3526007 items 981354 items/s
--+------+-----+--------+--------+-------+---------+----
delete_* 13763ms 1371728 items 99667 items/s
delete_0 13764ms 685393 items 49796 items/s
delete_1 13763ms 686335 items 49868 items/s
--+------+-----+------
read_* 13771ms 7255696 items 526882 items/s
read_0 13772ms 3582785 items 260149 items/s
read_1 13771ms 3672911 items 266713 items/s
--+------+-----+------
write_* 13765ms 1372576 items 99714 items/s
write_0 13766ms 686261 items 49851 items/s
write_1 13764ms 686315 items 49863 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 10411ms 8822216 items 847393 items/s
read_0 10424ms 2917524 items 279885 items/s
read_1 10419ms 2966443 items 284714 items/s
read_2 10391ms 2938249 items 282768 items/s
--+------+-----+------
delete_* 10350ms 565551 items 54642 items/s
delete_0 10357ms 188790 items 18228 items/s
delete_1 10348ms 188066 items 18174 items/s
delete_2 10347ms 188695 items 18236 items/s
--+------+-----+------
write_* 10380ms 612233 items 58981 items/s
write_0 10391ms 219087 items 21084 items/s
write_1 10381ms 203108 items 19565 items/s
write_2 10369ms 190038 items 18327 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 2029ms 10000000 items 4928536 items/s
read_0 2029ms 5029786 items 2478948 items/s
read_1 2029ms 4970214 items 2449587 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1766ms 10000000 items 5662514 items/s
read_0 1776ms 3378630 items 1902381 items/s
read_1 1771ms 3303765 items 1865479 items/s
read_2 1751ms 3317605 items 1894691 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1622ms 10000000 items 6165228 items/s
read_0 1636ms 2553554 items 1560852 items/s
read_1 1630ms 2432244 items 1492174 items/s
read_2 1616ms 2519038 items 1558810 items/s
read_3 1606ms 2495164 items 1553651 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1608ms 10000000 items 6218905 items/s
read_0 1658ms 1082180 items 652702 items/s
read_1 1653ms 1479498 items 895038 items/s
read_2 1629ms 2065451 items 1267925 items/s
read_3 1617ms 1754152 items 1084818 items/s
read_4 1555ms 1844924 items 1186446 items/s
read_5 1539ms 1773795 items 1152563 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1458ms 10000000 items 6858710 items/s
read_0 1638ms 1217195 items 743098 items/s
read_1 1638ms 856628 items 522971 items/s
read_2 1618ms 1072861 items 663078 items/s
read_3 1527ms 1150025 items 753127 items/s
read_4 1489ms 762001 items 511753 items/s
read_5 1475ms 974214 items 660484 items/s
read_6 1405ms 1253576 items 892224 items/s
read_7 1327ms 1009046 items 760396 items/s
read_8 1285ms 803676 items 625428 items/s
read_9 1179ms 900778 items 764018 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1603ms 9976045 items 6223359 items/s
read_0 1671ms 517471 items 309677 items/s
read_1 1671ms 1129825 items 676137 items/s
read_2 1665ms 1769584 items 1062813 items/s
read_3 1662ms 1332698 items 801864 items/s
read_4 1645ms 1037248 items 630545 items/s
read_5 1631ms 925329 items 567338 items/s
read_6 1617ms 719434 items 444918 items/s
read_7 1602ms 1101918 items 687838 items/s
read_8 1574ms 931664 items 591908 items/s
read_9 1298ms 510874 items 393585 items/s
--+------+-----+------
write_* 1283ms 23955 items 18671 items/s
write_0 1283ms 23955 items 18671 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 957ms 10000000 items 10449320 items/s
read_0 1656ms 818730 items 494402 items/s
read_1 1650ms 1024485 items 620900 items/s
read_2 1638ms 1177057 items 718594 items/s
read_3 1628ms 1378852 items 846960 items/s
read_4 1542ms 894173 items 579878 items/s
read_5 1514ms 698577 items 461411 items/s
read_6 1320ms 595306 items 450989 items/s
read_7 1149ms 432096 items 376062 items/s
read_8 1128ms 541190 items 479778 items/s
read_9 1107ms 489789 items 442447 items/s
read_10 1064ms 652728 items 613466 items/s
read_11 944ms 340095 items 360270 items/s
read_12 880ms 385007 items 437507 items/s
read_13 610ms 43901 items 71968 items/s
read_14 596ms 279953 items 469719 items/s
read_15 438ms 139778 items 319127 items/s
read_16 250ms 86036 items 344144 items/s
read_17 30ms 22247 items 741566 items/s
read_18 0ms 0 items oooo items/s
read_19 0ms 0 items oooo items/s
--+------+-----+------
write_* 0ms 0 items oooo items/s
write_0 0ms 0 items oooo items/s
--+------+-----+--------+--------+-------+---------+----
read_* 885ms 10000000 items 11299435 items/s
read_0 1674ms 912649 items 545190 items/s
read_1 1668ms 675863 items 405193 items/s
read_2 1652ms 1275618 items 772165 items/s
read_3 1636ms 1078886 items 659465 items/s
read_4 1589ms 747903 items 470675 items/s
read_5 1545ms 990975 items 641407 items/s
read_6 1531ms 1116800 items 729457 items/s
read_7 1495ms 987623 items 660617 items/s
read_8 1481ms 559675 items 377903 items/s
read_9 1318ms 718009 items 544771 items/s
read_10 801ms 185021 items 230987 items/s
read_11 722ms 359341 items 497702 items/s
read_12 428ms 278895 items 651623 items/s
read_13 139ms 101845 items 732697 items/s
read_14 29ms 10897 items 375758 items/s
read_15 0ms 0 items oooo items/s
read_16 0ms 0 items oooo items/s
read_17 0ms 0 items oooo items/s
read_18 0ms 0 items oooo items/s
read_19 0ms 0 items oooo items/s
--+------+-----+------
write_* 0ms 0 items oooo items/s
write_0 0ms 0 items oooo items/s
write_1 0ms 0 items oooo items/s
write_2 0ms 0 items oooo items/s
write_3 0ms 0 items oooo items/s
write_4 0ms 0 items oooo items/s
write_5 0ms 0 items oooo items/s
write_6 0ms 0 items oooo items/s
write_7 0ms 0 items oooo items/s
write_8 0ms 0 items oooo items/s
write_9 0ms 0 items oooo items/s
--+------+-----+------
delete_* 0ms 0 items oooo items/s
delete_0 0ms 0 items oooo items/s
delete_1 0ms 0 items oooo items/s
delete_2 0ms 0 items oooo items/s
delete_3 0ms 0 items oooo items/s
delete_4 0ms 0 items oooo items/s
delete_5 0ms 0 items oooo items/s
delete_6 0ms 0 items oooo items/s
delete_7 0ms 0 items oooo items/s
delete_8 0ms 0 items oooo items/s
delete_9 0ms 0 items oooo items/s
--+------+-----+--------+--------+-------+---------+----
单线程下速度下降不少，并发读写时效率很低，只读或写少是效率很不错。
CPU占用较高一般50%，部分时候到100%，系统调用还是比较占资源。
6.ReaderWriterLockSlim
read_* 2887ms 10000000 items 3463803 items/s
read_0 2887ms 10000000 items 3463803 items/s
--+------+-----+--------+--------+-------+---------+----
write_* 3359ms 10000000 items 2977076 items/s
write_0 3359ms 10000000 items 2977076 items/s
--+------+-----+--------+--------+-------+---------+----
delete_* 2591ms 10000000 items 3859513 items/s
delete_0 2591ms 10000000 items 3859513 items/s
--+------+-----+--------+--------+-------+---------+----
write_* 2985ms 4718018 items 1580575 items/s
write_0 2985ms 4718018 items 1580575 items/s
--+------+-----+------
read_* 2985ms 2507512 items 840037 items/s
read_0 2985ms 2507512 items 840037 items/s
--+------+-----+------
delete_* 2985ms 2774470 items 929470 items/s
delete_0 2985ms 2774470 items 929470 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1964ms 7770275 items 3956351 items/s
read_0 1964ms 3837877 items 1954112 items/s
read_1 1964ms 3932398 items 2002239 items/s
--+------+-----+------
write_* 1951ms 1141754 items 585214 items/s
write_0 1954ms 591289 items 302604 items/s
write_1 1949ms 550465 items 282434 items/s
--+------+-----+------
delete_* 1949ms 1087971 items 558220 items/s
delete_0 1950ms 556340 items 285302 items/s
delete_1 1949ms 531631 items 272771 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1892ms 8653503 items 4573733 items/s
read_0 1897ms 2661828 items 1403177 items/s
read_1 1897ms 3211396 items 1692881 items/s
read_2 1882ms 2780279 items 1477300 items/s
--+------+-----+------
write_* 1869ms 690275 items 369328 items/s
write_0 1875ms 269204 items 143575 items/s
write_1 1875ms 205358 items 109524 items/s
write_2 1859ms 215713 items 116037 items/s
--+------+-----+------
delete_* 1853ms 656222 items 354140 items/s
delete_0 1854ms 185805 items 100218 items/s
delete_1 1853ms 234311 items 126449 items/s
delete_2 1853ms 236106 items 127418 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1477ms 10000000 items 6770480 items/s
read_0 1480ms 4956391 items 3348912 items/s
read_1 1475ms 5043609 items 3419395 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1706ms 10000000 items 5861664 items/s
read_0 1719ms 3353321 items 1950739 items/s
read_1 1712ms 3329052 items 1944539 items/s
read_2 1687ms 3317627 items 1966583 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1904ms 10000000 items 5252100 items/s
read_0 1919ms 2438467 items 1270696 items/s
read_1 1918ms 2512520 items 1309968 items/s
read_2 1892ms 2499634 items 1321159 items/s
read_3 1887ms 2549379 items 1351022 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1917ms 10000000 items 5216484 items/s
read_0 1971ms 1675825 items 850240 items/s
read_1 1971ms 1881607 items 954645 items/s
read_2 1935ms 1822041 items 941623 items/s
read_3 1896ms 1577096 items 831801 items/s
read_4 1866ms 1495016 items 801187 items/s
read_5 1864ms 1548415 items 830694 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1842ms 10000000 items 5428881 items/s
read_0 1908ms 894535 items 468833 items/s
read_1 1908ms 1195727 items 626691 items/s
read_2 1875ms 966017 items 515209 items/s
read_3 1853ms 1075405 items 580358 items/s
read_4 1833ms 949024 items 517743 items/s
read_5 1815ms 960360 items 529123 items/s
read_6 1813ms 1047706 items 577885 items/s
read_7 1811ms 1003651 items 554197 items/s
read_8 1803ms 949584 items 526668 items/s
read_9 1801ms 957991 items 531921 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1855ms 9990094 items 5385495 items/s
read_0 1933ms 989543 items 511920 items/s
read_1 1933ms 998571 items 516591 items/s
read_2 1892ms 1155458 items 610707 items/s
read_3 1877ms 1086141 items 578657 items/s
read_4 1847ms 911123 items 493298 items/s
read_5 1821ms 844258 items 463623 items/s
read_6 1817ms 1012914 items 557465 items/s
read_7 1817ms 1059704 items 583216 items/s
read_8 1808ms 1066734 items 590007 items/s
read_9 1807ms 865648 items 479052 items/s
--+------+-----+------
write_* 1799ms 9906 items 5506 items/s
write_0 1799ms 9906 items 5506 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 1853ms 9993877 items 5393349 items/s
read_0 1978ms 666069 items 336738 items/s
read_1 1978ms 563541 items 284904 items/s
read_2 1970ms 588009 items 298481 items/s
read_3 1938ms 573743 items 296049 items/s
read_4 1916ms 535162 items 279312 items/s
read_5 1915ms 514100 items 268459 items/s
read_6 1898ms 514682 items 271170 items/s
read_7 1890ms 647994 items 342853 items/s
read_8 1876ms 523033 items 278802 items/s
read_9 1856ms 503310 items 271179 items/s
read_10 1850ms 415536 items 224614 items/s
read_11 1829ms 608040 items 332443 items/s
read_12 1808ms 459535 items 254167 items/s
read_13 1793ms 421532 items 235098 items/s
read_14 1786ms 353351 items 197844 items/s
read_15 1779ms 422878 items 237705 items/s
read_16 1764ms 400025 items 226771 items/s
read_17 1755ms 447114 items 254765 items/s
read_18 1751ms 434073 items 247900 items/s
read_19 1739ms 402150 items 231253 items/s
--+------+-----+------
write_* 1732ms 6123 items 3535 items/s
write_0 1732ms 6123 items 3535 items/s
--+------+-----+--------+--------+-------+---------+----
read_* 2195ms 9857949 items 4491092 items/s
read_0 2318ms 613925 items 264851 items/s
read_1 2312ms 682568 items 295228 items/s
read_2 2307ms 596734 items 258662 items/s
read_3 2233ms 558797 items 250244 items/s
read_4 2220ms 490325 items 220867 items/s
read_5 2210ms 492380 items 222796 items/s
read_6 2210ms 477611 items 216113 items/s
read_7 2197ms 598761 items 272535 items/s
read_8 2194ms 444040 items 202388 items/s
read_9 2190ms 446380 items 203826 items/s
read_10 2184ms 603915 items 276517 items/s
read_11 2181ms 432033 items 198089 items/s
read_12 2171ms 448571 items 206619 items/s
read_13 2162ms 467701 items 216327 items/s
read_14 2154ms 410388 items 190523 items/s
read_15 2153ms 343920 items 159739 items/s
read_16 2139ms 475204 items 222161 items/s
read_17 2132ms 401630 items 188381 items/s
read_18 2124ms 383813 items 180702 items/s
read_19 2114ms 489253 items 231434 items/s
--+------+-----+------
delete_* 2006ms 67925 items 33860 items/s
delete_0 2076ms 6605 items 3181 items/s
delete_1 2074ms 8156 items 3932 items/s
delete_2 2068ms 6018 items 2910 items/s
delete_3 2068ms 5191 items 2510 items/s
delete_4 1973ms 7813 items 3959 items/s
delete_5 1971ms 6973 items 3537 items/s
delete_6 1961ms 5233 items 2668 items/s
delete_7 1958ms 5984 items 3056 items/s
delete_8 1957ms 4560 items 2330 items/s
delete_9 1957ms 11392 items 5821 items/s
--+------+-----+------
write_* 2089ms 74126 items 35483 items/s
write_0 2096ms 8387 items 4001 items/s
write_1 2094ms 7390 items 3529 items/s
write_2 2094ms 5803 items 2771 items/s
write_3 2094ms 7582 items 3620 items/s
write_4 2094ms 4841 items 2311 items/s
write_5 2094ms 9001 items 4298 items/s
write_6 2091ms 5618 items 2686 items/s
write_7 2083ms 9669 items 4641 items/s
write_8 2081ms 9525 items 4577 items/s
write_9 2078ms 6310 items 3036 items/s
--+------+-----+--------+--------+-------+---------+----
相比ReaderWriterLock，并非想象中那么出众，不过读写同时进行时效率很不错。同时每个线程的执行时间都相差无几。
不像其他部分线程基本没有调度时间，ReaderWriterLockSlim在平等线程调度上是做得最好了。
CPU占用相比ReaderWriterLock稍好，减少系统调用。
总结：
综合性能上Level-Lock 最优，Lock-Free次之，但再CPU资源利用率上Lock-Free以绝对优势最高。 (可以实现一个Level-Lock-Free，最大的发挥多核CPU的价值，不过一般用不上)。
读写锁：ReaderWriterLock，ReaderWriterLockSlim。ReaderWriterLockSlim 在各个方面(尤其是并发读写情况下远好友ReaderWriterLock) 优于ReaderWriterLock。不过只读模式下两者都能发挥相同的高效性，使用时注意尽量放在写少的业务中。ReaderWriterLockSlim 另外一个很好的地方就是系统的平均调度上非常好，避免部分线程完全没有运行的机会。
一般要求不高的情况下使用lock就行，高并发情况下Level-Lock是非常好的选择。
Lock-Free不像lock那么好实现，限制比较多，如果用.Net 4不烦多用用System.Collection.Concurrent下的集合。
附上测试代码：
static class Program
{
static void Main()
{
// DictMTTest<ConcurrentDictionary<int, int>> test = new DictMTTest<ConcurrentDictionary<int, int>>(10000000, 10000000);
// DictMTTest<SafeDictionary<int, int>> test = new DictMTTest<SafeDictionary<int, int>>(10000000, 10000000);
// DictMTTest<Dictionary<int, int>> test = new DictMTTest<Dictionary<int, int>>(10000000, 10000000);
// DictMTTest<LockDictionary<int, int>> test = new DictMTTest<LockDictionary<int, int>>(10000000, 10000000);
//DictMTTest<LevelLockDictionary> test = new DictMTTest<LevelLockDictionary>(10000000, 10000000);
DictMTTest<RWLockDictionary<int, int>> test = new DictMTTest<RWLockDictionary<int, int>>(10000000, 10000000);
test.RunTest(1, 0, 0);
test.RunTest(0, 1, 0);
test.RunTest(0, 0, 1);
test.RunTest(1, 1, 1);
test.RunTest(2, 2, 2);
test.RunTest(3, 3, 3);
test.RunTest(2, 0, 0);
test.RunTest(3, 0, 0);
test.RunTest(4, 0, 0);
test.RunTest(6, 0, 0);
test.RunTest(10, 0, 0);
test.RunTest(10, 1, 0);
test.RunTest(20, 1, 0);
test.RunTest(20, 10, 10);
Console.Read();
}
}
public class DictMTTest<T> where T : IDictionary<int, int>, new()
{
private T _dict;
private int _perpare;
private int _items;
private Random _rand;
private MultiThreadTest _dictTest;
public DictMTTest(int perpare, int items)
{
_perpare = perpare;
_items = items;
}
private void Perpare()
{
_dict = new T();
_rand = new Random(DateTime.Now.Millisecond);
for (int i = 0; i < _perpare; i++)
{
int v = _rand.Next(0, _perpare * 2);
_dict[v] = v;
}
_dictTest = new MultiThreadTest();
}
private void Clear()
{
_dictTest = null;
_dict = default(T);
_rand = null;
GC.Collect();
GC.Collect();
GC.Collect();
}
public void RunTest(int read, int write, int delete)
{
Perpare();
_dictTest.AddAction(read, "read", new Action(() =>
{
int r = _rand.Next(0, _perpare * 2);
int temp;
_dict.TryGetValue(r,out temp);
}));
_dictTest.AddAction(write, "write", new Action(() =>
{
int r = _rand.Next(0, _perpare * 2);
_dict[r] = r;
}));
_dictTest.AddAction(delete, "delete", new Action(() =>
{
int r = _rand.Next(0, _perpare * 2);
_dict.Remove(r);
}));
_dictTest.Run(_items);
Clear();
}
}
public class MultiThreadTest
{
private List<Tuple<string, Action, int>> _actions;
private List<Tuple<string, int, int, int>> _results;
private List<Thread> _threads;
private bool _start = false;
private ManualResetEventSlim _wait;
public MultiThreadTest()
{
_wait = new ManualResetEventSlim();
_actions = new List<Tuple<string, Action, int>>();
_results = new List<Tuple<string, int, int, int>>();
_threads = new List<Thread>();
}
public void AddAction(int threadCount, string actionName, Action action)
{
if (_start)
throw new NotSupportedException();
_actions.Add(new Tuple<string, Action, int>(actionName, action, threadCount));
}
public void Run(int iteration)
{
PerfmonProc.Iteration = iteration;
foreach (var t in _actions)
{
for (int i = 0; i < t.Item3; i++)
{
PerfmonProc proc = new PerfmonProc(t.Item1, i, t.Item2);
proc.OnCompleted = Complete;
Thread th = new Thread(proc.Proc);
th.IsBackground = true;
_threads.Add(th);
}
}
_threads.ForEach((item) => { item.Start(); });
_wait.Wait();
}
private void Complete(Tuple<string, int, int, int> tuple)
{
lock (((ICollection)_results).SyncRoot)
{
_results.Add(tuple);
if (_results.Count == _threads.Count)
{
Dictionary<string, List<Tuple<string, int, int, int>>> dict =
new Dictionary<string, List<Tuple<string, int, int, int>>>();
foreach (Tuple<string, int, int, int> r in _results)
{
List<Tuple<string, int, int, int>> list;
if (!dict.TryGetValue(r.Item1, out list))
{
list = new List<Tuple<string, int, int, int>>();
dict.Add(r.Item1, list);
}
list.Add(r);
}
int count = dict.Count;
int i= 0;
foreach (var kv in dict)
{
ConsoleOut(kv.Key + "_*", -1, (int)kv.Value.Average(p => p.Item3)
, kv.Value.Sum(p => p.Item4));
var value = kv.Value.OrderBy(p => p.Item2);
foreach (var v in value)
{
ConsoleOut(v.Item1, v.Item2, v.Item3, v.Item4);
}
i++;
if (i < count)
Console.WriteLine("--+------+-----+------");
}
Console.WriteLine("--+------+-----+--------+--------+-------+---------+----");
_wait.Set();
}
}
}
private void ConsoleOut(string name, int index, int ms, int items)
{
ConsoleColor defColor = Console.ForegroundColor;
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write("{0}", index < 0 ? name : name + "_" + index);
Console.ForegroundColor = defColor;
Console.WriteLine(" {0}ms {1} items {2} items/s"
, ms, items,ms<=0?"oooo" : ((long)items * 1000 / (long)ms).ToString());
}
class PerfmonProc
{
public static int Iteration;
private static int _allDoCount;
private int _threadIndex;
private string _actionName;
private int _doCount;
private Action _action;
public Action<Tuple<string, int, int, int>> OnCompleted;
public PerfmonProc(string actionName, int threadIndex, Action action)
{
_threadIndex = threadIndex;
_actionName = actionName;
_action = action;
_allDoCount = 0;
}
public void Proc(object ob)
{
long startTime = Stopwatch.GetTimestamp();
ulong startCycles = CycleTime.Thread();
while (Interlocked.Increment(ref _allDoCount) <= Iteration)
{
Interlocked.Increment(ref _doCount);
_action();
}
UInt64 elapsedCycles = CycleTime.Thread() - startCycles;
Int64 elapsedTime = Stopwatch.GetTimestamp() - startTime;
Int64 milliseconds = (elapsedTime * 1000) / Stopwatch.Frequency;
Tuple<string, int, int, int> tuple = new Tuple<string, int, int, int>
(_actionName, _threadIndex, (int)milliseconds, _doCount);
if (OnCompleted != null)
OnCompleted(tuple);
}
}
}
至于集合的实现比较简单，我也没做完整的实现，就不贴了。
~~~~~~~~~~~~~~
写篇博客真不容易啊。。。。
