CPU

确认CPU型号

1
2
3

lscpu | grep "Model name"

Model name:            Intel(R) Xeon(R) CPU E5-2609 v4 @ 1.70GHz

Super PI

计算时间越短越好

 time echo "scale=500;4*a(1)"|bc -l -q
3.141592653589793238462643383279502884197169399375105820974944592307\
81640628620899862803482534211706798214808651328230664709384460955058\
22317253594081284811174502841027019385211055596446229489549303819644\
28810975665933446128475648233786783165271201909145648566923460348610\
45432664821339360726024914127372458700660631558817488152092096282925\
40917153643678925903600113305305488204665213841469519415116094330572\
70365759591953092186117381932611793105118548074462379962749567351885\
75272489122793818301194912

real    0m0.112s
user    0m0.108s
sys 0m0.000s

Disk

每次做读写测试前建议先清空缓存

1	sync; echo 3 > /proc/sys/vm/drop_caches

测试读性能

选择测试磁盘，建议做2-3组取平均值

hdparm -t /dev/sda

/dev/sda:
Timing buffered disk reads:  1074 MB in  3.00 seconds = 357.92 MB/sec

测试写入性能

根据业务选择不同的BlockSize大小按需多次测试取平均值

1	time dd if=/dev/zero of=/tmp/speed bs=1M count=2K conv=fsync;rm /tmp/speed

参考数据

以10,000 rpm 300 GB SAS硬盘为例，机型为IBM x3650 M4，Raid参数如下

1.Read Policy：Ahead （控制器缓存读策略：预读）
2.Write Policy：Write Back with BBU（控制器缓存写策略：有电池备份时回写）
3.IO Policy: Direct（IO策略：直接）
4.Drive Cache：disable （硬盘缓存：禁用）

Raid  Read(MB)  Write(MB)
Raid 1  170       130
Raid 5  350       250
Raid 10 300       215

nmon

建议根据实际需求配置间隔时间和次数，配合nmon Analyser可以显示直观的图表数据

#author: OX
#function: monitor system information
#time:2015/03/06
#crontab -e
#0 0 * * * sh /tmp/nmon/nmon.sh >/dev/null 2>&1
npath=/tmp/nmon/log
# monitoring per 120 senonds
#nmon -s 120 -c 720 -f -m $npath
# monitoring per 300 senonds
/tmp/nmon/nmon_x86_sles11 -s 300 -c 288 -f -m $npath
#delete file before 365 day
#find /tmp -name *.nmon  -mtime +365 -exec rm {} \;

Linux Performance - http://www.brendangregg.com/linuxperf.html
AIX 下磁盘 I/O 性能分析 - http://www.ibm.com/developerworks/cn/aix/library/1203_weixy_aixio/
nmon - http://nmon.sourceforge.net/pmwiki.php
转载自： https://wsgzao.github.io/post/linux-performance/

Linux 性能测试实践

CPU

Super PI

Disk

nmon

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