kvm相关测试

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CPU测试使用的UnixBench、IO测试使用的iozone、网络测试使用iperf，系统需要perl环境。

安装UnixBench、iozone

wget http://www.iozone.org/src/current/iozone3_414.tar
wget http://byte-unixbench.googlecode.com/files/UnixBench5.1.3.tgz
tar xvf iozone3_414.tar
tar zxvf UnixBench5.1.3.tgz

cd ./iozone3_414/src/current
make linux

cd ./UnixBench
make

安装iperf

wget http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el5.rf.x86_64.rpm

rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt

rpm -K rpmforge-release-0.5.2-2.el5.rf.*.rpm

rpm -i rpmforge-release-0.5.2-2.el5.rf.*.rpm

yum install iperf

遇到的问题：

Centos5.6 运行UnixBench5.1.3 报如下错误

Can't locate Time/HiRes.pm in @INC (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at ./Run line 6.

解决方法：

yum install perl-ExtUtils-MakeMaker.x86_64

yum install perl-Time-HiRes.x86_64

物理主机信息

CentOS release 6.3 (Final)

Linux localhost.localdomain 2.6.32-220.el6.x86_64 #1 SMP Tue Dec 6 19:48:22 GMT 2011 x86_64 x86_64 x86_64 GNU/Linux

Intel(R) Xeon(R) CPU E5504 @ 2.00GHz

MemTotal: 16319484 kB

Disk /dev/sda: 146.2 GB, 146163105792 bytes

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Device Boot Start End Blocks Id System

/dev/sda1 * 1 26 204800 83 Linux

Partition 1 does not end on cylinder boundary.

/dev/sda2 26 3682 29364224 8e Linux LVM

/dev/sda3 3682 17770 113167360 8e Linux LVM

一.磁盘IO测试

1.物理机IO

[root@localhost ~]# time dd if=/dev/zero of=/data/test.img bs=1K count=8192000

8388608000 bytes (8.4 GB) copied, 56.9204 s, 147 MB/s

[root@localhost ~]# time dd if=/dev/zero of=/data/test.img bs=1K count=8192000

8388608000 bytes (8.4 GB) copied, 53.0728 s, 158 MB/s

[root@localhost ~]# time dd if=/dev/zero of=/data/test.img bs=8K count=1024000

8388608000 bytes (8.4 GB) copied, 49.6586 s, 169 MB/s

[root@localhost ~]# time dd if=/dev/zero of=/data/test.img bs=8K count=1024000

8388608000 bytes (8.4 GB) copied, 52.2602 s, 161 MB/s

[root@localhost ~]# time dd if=/dev/zero of=/data/test.img bs=8K count=1024000

8388608000 bytes (8.4 GB) copied, 54.7777 s, 153 MB/s

[root@localhost ~]# time dd if=/dev/zero of=/data/test.img bs=256K count=32768

8589934592 bytes (8.6 GB) copied, 52.1963 s, 165 MB/s

[root@localhost ~]# time dd if=/dev/zero of=/data/test.img bs=1MB count=8192

8192000000 bytes (8.2 GB) copied, 46.0236 s, 178 MB/s

2.虚拟机IO缓存使用writeback模式时，写入速度不固定，其写入速度由物理主机的内存缓存决定。

mac=`printf 'DE:AD:BE:EF:%02X:%02X\n' $((RANDOM%256)) $((RANDOM%256))`

kvm -m 512 -drive file=centos5-15.img,cache=writeback,if=virtio,boot=on -net nic,macaddr=$mac -net tap -nographic -vnc :1

[root@localhost ~]# time dd if=/dev/zero of=/home/test.img bs=1K count=8192000

8388608000 bytes (8.4 GB) copied, 141.515 seconds, 59.3 MB/s

[root@localhost ~]# time dd if=/dev/zero of=/home/test.img bs=1K count=8192000

8388608000 bytes (8.4 GB) copied, 74.3178 seconds, 113 MB/s

[root@localhost ~]# time dd if=/dev/zero of=/home/test.img bs=1K count=8192000

8388608000 bytes (8.4 GB) copied, 133.908 seconds, 62.6 MB/s

[root@localhost ~]# time dd if=/dev/zero of=/home/test.img bs=8K count=1024000

8388608000 bytes (8.4 GB) copied, 104.59 seconds, 80.2 MB/s

[root@localhost ~]# time dd if=/dev/zero of=/home/test.img bs=8K count=1024000

8388608000 bytes (8.4 GB) copied, 47.156 seconds, 178 MB/s

[root@localhost ~]# time dd if=/dev/zero of=/home/test.img bs=8K count=1024000

8388608000 bytes (8.4 GB) copied, 46.4772 seconds, 180 MB/ss

[root@localhost ~]# time dd if=/dev/zero of=/home/test.img bs=256K count=32768

8589934592 bytes (8.6 GB) copied, 93.3618 seconds, 92.0 MB/s

[root@localhost ~]# time dd if=/dev/zero of=/home/test.img bs=256K count=32768

8589934592 bytes (8.6 GB) copied, 152.476 seconds, 56.3 MB/s

[root@localhost ~]# time dd if=/dev/zero of=/home/test.img bs=1MB count=8192

8192000000 bytes (8.2 GB) copied, 84.2115 seconds, 97.3 MB/s

3.虚拟机在缓存模式为none模式下，实际的磁盘写入速度约为物理机速度的50%，写入速度稳定。

uid= `printf ' %08x-%04x-%04x-%04x-%012x\n' $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)) `

mac=`printf 'DE:AD:BE:EF:%02X:%02X\n' $((RANDOM%256)) $((RANDOM%256))`

kvm -m 512 -drive file=centos5-15.img,cache=none,if=virtio,boot=on -net nic,macaddr=$mac -net tap -nographic -vnc :1

[root@localhost ~]# time dd if=/dev/zero of=/home/test.img bs=1MB count=2000e

1965891584 bytes (2.0 GB) copied, 22.5994 seconds, 87.0 MB/s

[root@localhost ~]# sync

[root@localhost ~]# rm -f /home/test.img

[root@localhost ~]# sync

\[root@localhost ~]#echo 3 > /proc/sys/vm/drop_caches

[root@localhost ~]# time dd if=/dev/zero of=/home/test.img bs=1MB count=2000

1965838336 bytes (2.0 GB) copied, 23.0265 seconds, 85.4 MB/s

[root@localhost ~]# time dd if=/dev/zero of=/home/test.img bs=1MB count=2000

1969516544 bytes (2.0 GB) copied, 23.0854 seconds, 85.3 MB/s

[root@localhost ~]# time dd if=/dev/zero of=/home/test.img bs=1K count=2040000

1966112768 bytes (2.0 GB) copied, 23.8183 seconds, 82.5 MB/s

[root@localhost ~]# time dd if=/dev/zero of=/home/test.img bs=256K count=8000

1969266688 bytes (2.0 GB) copied, 23.2247 seconds, 84.8 MB/s

二.网络测试

本测试交换机网速100Mb，因此未能反映实际情况，需进一步测试。

1.虚拟机到本地物理机

[root@localhost ~]# time scp /home/test.img root@192.168.135.124:/home

test.img 100% 1878MB 10.0MB/s 03:07

real 3m24.464s

user 0m50.679s

sys 2m14.275s

2.虚拟机到本地虚拟机

[root@localhost ~]# time scp /home/test.img root@192.168.135.84:/home

test.img 100% 1878MB 12.7MB/s 02:28

3.虚拟机到远程虚拟机

[root@localhost ~]# time scp /home/test.img root@192.168.135.108:/opt

test.img 100% 1878MB 11.1MB/s 02:50

三.CPU性能测试

该测试是使用程序在给定范围内寻找素数，物理主机与虚拟主机的CPU性能相差小于1%

1.物理机CPU测试

[root@localhost test_function]# ./finder

find prime during 2 - 10000000 using: 42479 ms

2.虚拟机CPU测试

[root@localhost home]# ./finder

find prime during 2 - 10000000 using: 42246 ms

[root@localhost kvmtest]# cd /data/kvmtest

[root@localhost kvmtest]# uid=`printf ' %08x-%04x-%04x-%04x-%012x\n' $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256))`

[root@localhost kvmtest]# mac=`printf 'DE:AD:BE:EF:%02X:%02X\n' $((RANDOM%256)) $((RANDOM%256))`

[root@localhost kvmtest]# nohup kvm -m 2048 -drive file=centos15_1.img,cache=none,if=virtio,boot=on -net nic,macaddr=$mac -net tap -uuid $uid -nographic -vnc :0 &

[root@localhost kvmtest]# uid=`printf ' %08x-%04x-%04x-%04x-%012x\n' $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256))`

[root@localhost kvmtest]# mac=`printf 'DE:AD:BE:EF:%02X:%02X\n' $((RANDOM%256)) $((RANDOM%256))`

[root@localhost kvmtest]# nohup kvm -m 2048 -drive file=centos15_2.img,cache=none,if=virtio,boot=on -net nic,macaddr=$mac -net tap -uuid $uid -nographic -vnc :1 &

[root@localhost kvmtest]# uid=`printf ' %08x-%04x-%04x-%04x-%012x\n' $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256))`

[root@localhost kvmtest]# mac=`printf 'DE:AD:BE:EF:%02X:%02X\n' $((RANDOM%256)) $((RANDOM%256))`

[root@localhost kvmtest]# nohup kvm -cpu core2duo -smp 2 -m 2048 -drive file=centos15_3.img,cache=none,if=virtio,boot=on -net nic,macaddr=$mac -net tap -uuid $uid -nographic -vnc :2 &

[root@localhost kvmtest]# uid=`printf ' %08x-%04x-%04x-%04x-%012x\n' $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256))`

[root@localhost kvmtest]# mac=`printf 'DE:AD:BE:EF:%02X:%02X\n' $((RANDOM%256)) $((RANDOM%256))`

[root@localhost kvmtest]# nohup kvm -cpu core2duo -smp 4 -m 2048 -drive file=centos15_4.img,cache=none,if=virtio,boot=on -net nic,macaddr=$mac -net tap -uuid $uid -nographic -vnc :3 &

192.168.135.141 -m 2048 -vnc 0

192.168.135.142 -m 2048 -vnc 1

192.168.135.146 -cpu core2duo -smp 2 -m 2048 -vnc 2

192.168.135.147 -cpu core2duo -smp 4 -m 2048 -vnc 3

一.CPU性能测试

cd ./UnixBench

./Run

测试结果

========================================================================

Benchmark Run: Thu Dec 27 2012 13:58:21 - 14:26:12

8 CPUs in system; running 1 parallel copy of tests

Dhrystone 2 using register variables 19278152.8 lps (10.0 s, 7 samples)

Double-Precision Whetstone 2389.7 MWIPS (9.9 s, 7 samples)

Execl Throughput 2237.1 lps (30.0 s, 2 samples)

File Copy 1024 bufsize 2000 maxblocks 506905.5 KBps (30.0 s, 2 samples)

File Copy 256 bufsize 500 maxblocks 167039.1 KBps (30.0 s, 2 samples)

File Copy 4096 bufsize 8000 maxblocks 1169919.4 KBps (30.0 s, 2 samples)

Pipe Throughput 1054701.6 lps (10.0 s, 7 samples)

Pipe-based Context Switching 162959.8 lps (10.0 s, 7 samples)

Process Creation 4724.6 lps (30.0 s, 2 samples)

Shell Scripts (1 concurrent) 3211.2 lpm (60.0 s, 2 samples)

Shell Scripts (8 concurrent) 1167.8 lpm (60.0 s, 2 samples)

System Call Overhead 1351904.9 lps (10.0 s, 7 samples)

System Benchmarks Index Values BASELINE RESULT INDEX

Dhrystone 2 using register variables 116700.0 19278152.8 1651.9

Double-Precision Whetstone 55.0 2389.7 434.5

Execl Throughput 43.0 2237.1 520.3

File Copy 1024 bufsize 2000 maxblocks 3960.0 506905.5 1280.1

File Copy 256 bufsize 500 maxblocks 1655.0 167039.1 1009.3

File Copy 4096 bufsize 8000 maxblocks 5800.0 1169919.4 2017.1

Pipe Throughput 12440.0 1054701.6 847.8

Pipe-based Context Switching 4000.0 162959.8 407.4

Process Creation 126.0 4724.6 375.0

Shell Scripts (1 concurrent) 42.4 3211.2 757.4

Shell Scripts (8 concurrent) 6.0 1167.8 1946.4

System Call Overhead 15000.0 1351904.9 901.3

========

System Benchmarks Index Score 861.6

------------------------------------------------------------------------

Benchmark Run: Thu Dec 27 2012 14:26:12 - 14:55:58

8 CPUs in system; running 8 parallel copies of tests

Dhrystone 2 using register variables 102175485.5 lps (10.0 s, 7 samples)

Double-Precision Whetstone 19042.8 MWIPS (9.9 s, 7 samples)

Execl Throughput 10702.7 lps (30.0 s, 2 samples)

File Copy 1024 bufsize 2000 maxblocks 501088.8 KBps (30.0 s, 2 samples)

File Copy 256 bufsize 500 maxblocks 144154.1 KBps (30.0 s, 2 samples)

File Copy 4096 bufsize 8000 maxblocks 1072613.1 KBps (30.0 s, 2 samples)

Pipe Throughput 5462333.5 lps (10.0 s, 7 samples)

Pipe-based Context Switching 1565018.7 lps (10.0 s, 7 samples)

Process Creation 25845.7 lps (30.0 s, 2 samples)

Shell Scripts (1 concurrent) 12409.1 lpm (60.0 s, 2 samples)

Shell Scripts (8 concurrent) 2717.7 lpm (60.1 s, 2 samples)

System Call Overhead 4175337.8 lps (10.0 s, 7 samples)

System Benchmarks Index Values BASELINE RESULT INDEX

Dhrystone 2 using register variables 116700.0 102175485.5 8755.4

Double-Precision Whetstone 55.0 19042.8 3462.3

Execl Throughput 43.0 10702.7 2489.0

File Copy 1024 bufsize 2000 maxblocks 3960.0 501088.8 1265.4

File Copy 256 bufsize 500 maxblocks 1655.0 144154.1 871.0

File Copy 4096 bufsize 8000 maxblocks 5800.0 1072613.1 1849.3

Pipe Throughput 12440.0 5462333.5 4390.9

Pipe-based Context Switching 4000.0 1565018.7 3912.5

Process Creation 126.0 25845.7 2051.2

Shell Scripts (1 concurrent) 42.4 12409.1 2926.7

Shell Scripts (8 concurrent) 6.0 2717.7 4529.6

System Call Overhead 15000.0 4175337.8 2783.6

========

System Benchmarks Index Score 2765.3

虚拟机---192.168.135.141 -m 2048 -vnc 0

========================================================================

Benchmark Run: Thu Dec 27 2012 15:20:57 - 15:48:55

1 CPU in system; running 1 parallel copy of tests

Dhrystone 2 using register variables 11347938.0 lps (10.0 s, 7 samples)

Double-Precision Whetstone 1123.8 MWIPS (10.0 s, 7 samples)

Execl Throughput 2606.2 lps (30.0 s, 2 samples)

File Copy 1024 bufsize 2000 maxblocks 426633.9 KBps (30.0 s, 2 samples)

File Copy 256 bufsize 500 maxblocks 121600.1 KBps (30.0 s, 2 samples)

File Copy 4096 bufsize 8000 maxblocks 948874.7 KBps (30.0 s, 2 samples)

Pipe Throughput 792690.6 lps (10.0 s, 7 samples)

Pipe-based Context Switching 249596.9 lps (10.0 s, 7 samples)

Process Creation 11784.1 lps (30.0 s, 2 samples)

Shell Scripts (1 concurrent) 4433.0 lpm (60.0 s, 2 samples)

Shell Scripts (8 concurrent) 613.1 lpm (60.0 s, 2 samples)

System Call Overhead 730223.9 lps (10.0 s, 7 samples)

System Benchmarks Index Values BASELINE RESULT INDEX

Dhrystone 2 using register variables 116700.0 11347938.0 972.4

Double-Precision Whetstone 55.0 1123.8 204.3

Execl Throughput 43.0 2606.2 606.1

File Copy 1024 bufsize 2000 maxblocks 3960.0 426633.9 1077.4

File Copy 256 bufsize 500 maxblocks 1655.0 121600.1 734.7

File Copy 4096 bufsize 8000 maxblocks 5800.0 948874.7 1636.0

Pipe Throughput 12440.0 792690.6 637.2

Pipe-based Context Switching 4000.0 249596.9 624.0

Process Creation 126.0 11784.1 935.2

Shell Scripts (1 concurrent) 42.4 4433.0 1045.5

Shell Scripts (8 concurrent) 6.0 613.1 1021.8

System Call Overhead 15000.0 730223.9 486.8

========

System Benchmarks Index Score 746.9

对虚拟机做IO测试时物理机IO利用率可达到93%~97%，此时虚拟机测试得到的磁盘写入速度为物理主机的50%，既相对于物理主机来说虚拟机的IO约有40%~50%的性能损失。

磁盘IO测试

./iozone -Mcew -i0 -i1 -i2 -s4g -r256k -f /data/test.img

writerewritereadrereadreadwrite物理主机12122912221238499453858558378703593721虚拟机89278923061101711156393216939354