Linux IO性能测试

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June 1, 2011 - 6 minutes read - 1108 words

近来想了解一下开发环境的IO性能，分别用dd/orion/iozone/bonnie++四种工具测试了一下

开发环境系统配置如下:

Intel SR1625 server, 2 CPU, 32GB内存, 用主板自带卡做了raid1+0，8个7200转SATA硬盘

操作系统是RHEL 5.3 64位

因为物理内存是32GB，因此整个过程都选用了60GB+的数据量来测试，以避免cache的影响

1. 首先用自带的dd命令先测一下, 块大小为8k

dd只能提供一个大概的测试结果，而且是连续IO而不是随机IO

读测试

time dd if=/dev/sda2 f=/dev/null bs=8k count=8388608

8388608+0 records in

8388608+0 records out

68719476736 bytes (69 GB) copied, 516.547 seconds, 133 MB/s

real 8m36.926s

user 0m0.117s

sys 0m55.216s

写测试

time dd if=/dev/zero f=/opt/iotest bs=8k count=8388608

8388608+0 records in

8388608+0 records out

68719476736 bytes (69 GB) copied, 888.398 seconds, 77.4 MB/s

real 14m48.743s

user 0m3.678s

sys 2m47.158s

读写测试

time dd if=/dev/sda2 f=/opt/iotest bs=8k count=8388608

8388608+0 records in

8388608+0 records out

68719476736 bytes (69 GB) copied, 1869.89 seconds, 36.8 MB/s

real 31m10.343s

user 0m2.613s

sys 3m25.548s

2. 接下来用Oracle的orion工具来测一下

解压即可使用

gzip orion_linux_x86-64.gz

测异步IO时需要libaio库

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib64

echo $LD_LIBRARY_PATH

:/opt/oracle/product/10.2.0/lib:/usr/lib64

创建配置文件mytest.lun,列出要测试的分区即可. 注意文件名前缀要跟下面的 testname一致

vi mytest.lun

查看mytest.jun内容

cat mytest.lun

/dev/sda2

先来个simple test

./orion_linux_x86-64 -run simple -testname mytest -num_disks 8

查看测试结果

cat mytest_20081111_1431_summary.txt

ORION VERSION 11.1.0.7.0

Commandline:

-run simple -testname mytest -num_disks 8

This maps to this test:

Test: mytest

Small IO size: 8 KB

Large IO size: 1024 KB

IO Types: Small Random IOs, Large Random IOs

Simulated Array Type: CONCAT

Write: 0%

Cache Size: Not Entered

Duration for each Data Point: 60 seconds

Small Columns:, 0

Large Columns:, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16

Total Data Points: 38

Name: /dev/sda2 Size: 629143441920

1 FILEs found.

Maximum Large MBPS=56.97 @ Small=0 and Large=7

Maximum Small IOPS=442 @ Small=40 and Large=0

Minimum Small Latency=14.62 @ Small=1 and Large=0

最大MBPS为56.97，最大IOPS为442

再测一下8k随机读操作

./orion_linux_x86-64 -run advanced -testname mytest -num_disks 8 -size_small 8 -size_large 8 -type rand &

看看结果

cat mytest_20081111_1519_summary.txt

ORION VERSION 11.1.0.7.0

Commandline:

-run advanced -testname mytest -num_disks 8 -size_small 8 -size_large 8 -type rand

This maps to this test:

Test: mytest

Small IO size: 8 KB

Large IO size: 8 KB

IO Types: Small Random IOs, Large Random IOs

Simulated Array Type: CONCAT

Write: 0%

Cache Size: Not Entered

Duration for each Data Point: 60 seconds

Small Columns:, 0

Large Columns:, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16

Total Data Points: 38

Name: /dev/sda2 Size: 629143441920

1 FILEs found.

Maximum Large MBPS=3.21 @ Small=0 and Large=13

Maximum Small IOPS=448 @ Small=38 and Large=0

Minimum Small Latency=15.16 @ Small=1 and Large=0

最大MBPS为3.21(这么低？？)，最大IOPS为448

再测一下1M顺序读操作, 失败了, 原因不明…

./orion_linux_x86-64 -run advanced -testname mytest -num_disks 8 -size_small 1024 -size_large 1024 -type seq

ORION: ORacle IO Numbers — Version 11.1.0.7.0

mytest_20081114_1349

Test will take approximately 73 minutes

Larger caches may take longer

rwbase_run_test: rwbase_reap_req failed

rwbase_run_process: rwbase_run_test failed

rwbase_rwluns: rwbase_run_process failed

orion_warm_cache: Warming cache failed. Continuing

看看结果

cat mytest_20081111_1620_summary.txt

ORION VERSION 11.1.0.7.0

Commandline:

-run advanced -testname mytest -num_disks 8 -size_small 1024 -size_large 1024 -type seq

This maps to this test:

Test: mytest

Small IO size: 1024 KB

Large IO size: 1024 KB

IO Types: Small Random IOs, Large Sequential Streams

Number of Concurrent IOs Per Stream: 4

Force streams to separate disks: No

Simulated Array Type: CONCAT

Write: 0%

Cache Size: Not Entered

Duration for each Data Point: 60 seconds

没结果，失败

3. 用iozone来测一下

安装

tar -xvf iozone3_345.tar

make linux-AMD64

指定64G的文件，只测read/reread和write/rewrite，记录大小从4k-16k.同时生成一个excel文件iozone.wks

./iozone -Rab iozone.wks -s64G -i 0 -i 1 -y 4k -q 16k

Iozone: Performance Test of File I/O

Version $Revision: 3.345 $

Compiled for 64 bit mode.

Build: linux-AMD64

Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins

Al Slater, Scott Rhine, Mike Wisner, Ken Goss

Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR,

Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner,

Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone,

Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root,

Fabrice Bacchella, Zhenghua Xue, Qin Li.

Run began: Tue Nov 11 10:23:25 2008

Excel chart generation enabled

Auto Mode

File size set to 67108864 KB

Using Minimum Record Size 4 KB

Using Maximum Record Size 16 KB

Command line used: ./iozone -Rab iozone.wks -s64G -i 0 -i 1 -y 4k -q 16k

Output is in Kbytes/sec

Time Resolution = 0.000001 seconds.

Processor cache size set to 1024 Kbytes.

Processor cache line size set to 32 bytes.

File stride size set to 17 * record size.

random random bkwd record stride

KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread

67108864 4 72882 69470 104898 125512

67108864 8 72083 69256 133689 109061

67108864 16 73375 69155 142019 116034

iozone test complete.

Excel output is below:

“Writer report”

“4” “8” “16”

“67108864” 72882 72083 73375

“Re-writer report”

“4” “8” “16”

“67108864” 69470 69256 69155

“Reader report”

“4” “8” “16”

“67108864” 104898 133689 142019

“Re-Reader report”

“4” “8” “16”

“67108864” 125512 109061 116034

可以看到，8k的写是72M/s左右，读是133M/s左右，跟dd的结果比较接近

测一下64G文件8k随机读写

./iozone -Rab iozone.wks -s64G -i 2 -y 8k -q 8k

Iozone: Performance Test of File I/O

Version $Revision: 3.345 $

Compiled for 64 bit mode.

Build: linux-AMD64

Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins

Al Slater, Scott Rhine, Mike Wisner, Ken Goss

Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR,

Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner,

Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone,

Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root,

Fabrice Bacchella, Zhenghua Xue, Qin Li.

Run began: Fri Nov 14 15:52:01 2008

Excel chart generation enabled

Auto Mode

File size set to 67108864 KB

Using Minimum Record Size 8 KB

Using Maximum Record Size 8 KB

Command line used: ./iozone -Rab iozone.wks -s64G -i 2 -y 8k -q 8k

Output is in Kbytes/sec

Time Resolution = 0.000001 seconds.

Processor cache size set to 1024 Kbytes.

Processor cache line size set to 32 bytes.

File stride size set to 17 * record size.

random random bkwd record stride

KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread

67108864 8

Error reading block at 6501007360

read: Success

出错了(??)

4. 最后用bonnie++测一下

安装

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib64

./configure

make

make install

开始测试，默认文件大小是内存的2倍

bonnie++ -d /opt/IOTest/ -m sva17 -u root

Using uid:0, gid:0.

Writing with putc()…done

Writing intelligently…done

Rewriting…done

Reading with getc()…done

Reading intelligently…done

start ’em…done…done…done…

Create files in sequential order…done.

Stat files in sequential order…done.

Delete files in sequential order…done.

Create files in random order…done.

Stat files in random order…done.

Delete files in random order…done.

Version 1.03e ——Sequential Output—— –Sequential Input- –Random-

-Per Chr- –Block– -Rewrite- -Per Chr- –Block– –Seeks–

Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP

sva17 63G 52391 84 35222 7 34323 6 56362 88 131568 10 176.7 0

——Sequential Create—— ——–Random Create——–

-Create– –Read— -Delete– -Create– –Read— -Delete–

files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP

16 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++

sva17,63G,52391,84,35222,7,34323,6,56362,88,131568,10,176.7,0,16,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++

顺序写: 按字符是52391KB/s，CPU占用率84%；按块是35222KB/s，CPU占用率7%

顺序读: 按字符是56362KB/s, CPU占用率88%；按块是131568KB/s，CPU占用率10%

随机读写: 176.7次/s，CPU占用率0%

后两项全是++ (没结果?)

结论:

不同测试工具构建出来的测试环境不同，侧重点也不一样，得到的结果可能相差比较大。

MBPS:

dd和iozone比较接近，读写分别是130+和70+。

orion读57左右，写没测(会删掉分区内所有文件!)

bonnie++按块读是130左右，写是35左右；按字符读是56左右，写是52左右

IOPS:

dd 无结果

orion 440左右(只读)

iozone 出错

bonnie++ 176.7 (读写)

http://space.itpub.net/441887/viewspace-630694