Go 官方进程诊断工具 gops 详解

参考链接：http://dockone.io/article/10681

查看内存使用情况：
$ gops memstats 3739
alloc: 1.15MB (1205272 bytes)
total-alloc: 1.15MB (1205272 bytes)
sys: 69.45MB (72827136 bytes)
lookups: 0
mallocs: 644
frees: 12
heap-alloc: 1.15MB (1205272 bytes)
heap-sys: 63.66MB (66748416 bytes)
heap-idle: 62.05MB (65060864 bytes)
heap-in-use: 1.61MB (1687552 bytes)
heap-released: 62.02MB (65028096 bytes)
heap-objects: 632
...

查看运行时信息：
$ gops stats 3739
goroutines: 2
OS threads: 8
GOMAXPROCS: 4
num CPU: 4

查看指定进程信息：
$ gops <pid>
parent PID: 3725
threads:    7
memory usage:   0.042%
cpu usage:  0.003%
username:   eddycjy
cmd+args:   /var/folders/jm/pk20jr_s74x49kqmyt87n2800000gn/T/go-build943691423/b001/exe/main
elapsed time:   10:56
local/remote:   127.0.0.1:59369 <-> :0 (LISTEN)
local/remote:   *:6060 <-> :0 (LISTEN)