在看CPU相关的文章的时候,想起来之前有文章讨论是否要做CPU绑定,这个有说绑定的也有说不绑定的,然后就想到一个问题,有去观测这些OSD到底运行在哪些CPU上面么,有问题就好解决了,现在就是要查下机器上的OSD运行在哪些CPU上
提前装好psutil和prettytable的python模块,这个通过rpm或者pip来安装都可以的
这里直接上代码了,最近学习python在,就用python来实现
#!/usr/bin/env python
# -*- coding: UTF-8 -*-
import os
import sys
import json
import psutil
import commands
from prettytable import PrettyTable
def main():
printosdcputable()
def printosdcputable():
row = PrettyTable()
row.header = True
cpulist = ["OSD\CPU"]
corelist=["Core ID"]
phylist = ["Physical ID"]
emplist=["-----------"]
for cpupro in range(psutil.cpu_count()):
cpulist.append("%s" %cpupro )
coreid=commands.getoutput('egrep \'processor|physical id|core id\' /proc/cpuinfo | cut -d : -f 2 | paste - - - | awk \'$1==%s {print $3 }\'' %cpupro)
corelist.append("%s" %coreid)
phyid = commands.getoutput('egrep \'processor|physical id|core id\' /proc/cpuinfo | cut -d : -f 2 | paste - - - | awk \'$1==%s {print $2 }\'' % cpupro)
phylist.append("%s" %phyid)
emplist.append("--")
row.field_names = cpulist
row.add_row(corelist)
row.add_row(phylist)
row.add_row(emplist)
for root, dirs, files in os.walk('/var/run/ceph/'):
for name in files:
if "osd" in name and "pid" in name :
osdlist = []
for osdcpu in range(psutil.cpu_count()):
osdlist.append(" ")
pidfile=root+ name
osdid=commands.getoutput('ls %s|cut -d "." -f 2 2>/dev/null' %pidfile )
osdpid = commands.getoutput('cat %s 2>/dev/null' %pidfile)
osd_runcpu = commands.getoutput('ps -o psr -p %s |grep -v PSR 2>/dev/null' %osdpid)
osdname="osd."+osdid
osdlist[int(osd_runcpu)]="+"
osdlist.insert(0,osdname)
row.add_row(osdlist)
print row
if __name__ == '__main__':
main()
运行脚本:
watch python getosdcpu.py
运行效果如下:
看上去确实有些CPU上面运行了多个OSD,这里不讨论CPU绑定的好坏,只是展示现象,具体有什么效果,是需要用数据取分析的,这个以后再看下