Linux IO性能测试

　　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 <http://www.iozone.org/>来测一下

　　安装 <http://hi.baidu.com/fatux/blog/item/:;>

　　# 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.

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