java cpu load
$ps -Lp 179093 cu | more
USER PID LWP %CPU NLWP %MEM VSZ RSS TTY STAT START TIME COMMAND
admin 179093 179093 0.0 383 54.5 5803448 4572012 ? Sl Aug05 0:00 java
admin 179093 179097 0.0 383 54.5 5803448 4572012 ? Sl Aug05 0:01 java
admin 179093 179100 0.0 383 54.5 5803448 4572012 ? Sl Aug05 8:43 java
admin 179093 179101 0.0 383 54.5 5803448 4572012 ? Sl Aug05 8:43 java
admin 179093 179102 0.0 383 54.5 5803448 4572012 ? Sl Aug05 8:44 java
admin 179093 179103 0.0 383 54.5 5803448 4572012 ? Sl Aug05 8:45 java
admin 179093 179104 0.0 383 54.5 5803448 4572012 ? Sl Aug05 2:21 java
admin 179093 179105 0.0 383 54.5 5803448 4572012 ? Sl Aug05 55:50 java
admin 179093 179106 0.0 383 54.5 5803448 4572012 ? Sl Aug05 0:03 java
admin 179093 179107 0.0 383 54.5 5803448 4572012 ? Sl Aug05 0:15 java
admin 179093 179108 0.0 383 54.5 5803448 4572012 ? Sl Aug05 0:00 java
admin 179093 179109 0.0 383 54.5 5803448 4572012 ? Sl Aug05 0:00 java
admin 179093 179110 0.0 383 54.5 5803448 4572012 ? Sl Aug05 1:02 java
admin 179093 179111 0.0 383 54.5 5803448 4572012 ? Sl Aug05 0:58 java
admin 179093 179112 0.0 383 54.5 5803448 4572012 ? Sl Aug05 0:00 java
admin 179093 179113 0.0 383 54.5 5803448 4572012 ? Sl Aug05 29:21 java
......
$printf "%x\n" 179105
2bba1
$jstack -l 179093 > jstack.log
$vi jstack.log
search 2bba1
"Reference Handler" daemon prio=10 tid=0x00002aaaab073800 nid=0x2bba2 in Object.wait() [0x00000000405cd000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:503)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133)
- locked <0x0000000772d40fd8> (a java.lang.ref.Reference$Lock)
Locked ownable synchronizers:
- None
"main" prio=10 tid=0x00002aaaab072000 nid=0x2bb99 runnable [0x0000000041e45000]
java.lang.Thread.State: RUNNABLE
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:398)
at java.net.ServerSocket.implAccept(ServerSocket.java:530)
at java.net.ServerSocket.accept(ServerSocket.java:498)
at org.apache.catalina.core.StandardServer.await(StandardServer.java:466)
at org.apache.catalina.startup.Catalina.await(Catalina.java:787)
at org.apache.catalina.startup.Catalina.start(Catalina.java:733)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:320)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:454)
Locked ownable synchronizers:
- None
"VM Thread" prio=10 tid=0x00002aaaab10d000 nid=0x2bba1 runnable
"Gang worker#0 (Parallel GC Threads)" prio=10 tid=0x00002aaaab108800 nid=0x2bb9c runnable
"Gang worker#1 (Parallel GC Threads)" prio=10 tid=0x00002aaaab109800 nid=0x2bb9d runnable
"Gang worker#2 (Parallel GC Threads)" prio=10 tid=0x00002aaaab10a000 nid=0x2bb9e runnable
"Gang worker#3 (Parallel GC Threads)" prio=10 tid=0x00002aaaab10a800 nid=0x2bb9f runnable
"Concurrent Mark-Sweep GC Thread" prio=10 tid=0x00002aaaab10c000 nid=0x2bba0 runnable
"VM Periodic Task Thread" prio=10 tid=0x00002aaaab10d800 nid=0x2bba9 waiting on condition
JNI global references: 343
......
here is a script:
#!/bin/sh
# write by : oldmanpushcart@gmail.com
# date : 2014-01-16
# version : 0.07
typeset top=${1:-10}
typeset pid=${2:-$(pgrep -u $USER java)}
typeset tmp_file=/tmp/java_${pid}_$$.trace
/opt/taobao/java/bin/jstack $pid > $tmp_file
ps H -eo user,pid,ppid,tid,time,%cpu --sort=%cpu --no-headers\
| tail -$top\
| awk -v "pid=$pid" '$2==pid{print $4"\t"$6}'\
| while read line;
do
typeset nid=$(echo "$line"|awk '{printf("0x%x",$1)}')
typeset cpu=$(echo "$line"|awk '{print $2}')
awk -v "cpu=$cpu" '/nid='"$nid"'/,/^$/{print $0"\t"(isF++?"":"cpu="cpu"%");}' $tmp_file
done
rm -f $tmp_file
