基于IOzone的性能测试方案

1、基于IOzone的性能测试方案UV2000 IO性能测试工具我们一般采用IOZONE进行存储IO性能测试。最新的iozone可以从 HYPERLINK 下载。iozone可以测试Linux IO, MMAP和POSIX系统调用，通过设定IO读写块的大小，测试读写文件性能。The benchmark tests file I/O performance for the following operations: Write, Re-write, Read, Re-Read, Random Read, Random Write, Random Mix, Backwards Read, Record

2、 Rewrite, Strided Read, Fwrite, Frewrite, Fread, Freread, Write with Mmap, Rewrite with Mmap, Reader with mmap, Re-reader with mmap, Writer Posix Async I/O,Re-writer Posix Async I/O, Reader Posix Async I/O, Re-reader Posix Async I/O.影响IO性能的因素Iozone 是非浮点计算应用，所以IO性能与Sandy Bridge处理器的AVX特性关系不大；如果需要在UV20

3、00上需要重新编译iozone，可以用$(CC) -O3 -xAVX -o iozone处理器主频和传输带宽（FC或GbE）对IO影响明显；对于计算密集的应用，无论是单精度浮点或双精度浮点，Sandy Bridge处理器的Turbo Boost(Hyper Thread)特性对提高IO性能有帮助；在UV2000上，为了获得高IO性能，需要kernel关闭（disable）memory_spread_page和memory_spread_slab（即buffer spread）,设置为buffer local 测试方法采用SCSI (/dev/sd*) LUN设备，并生成xfs文件运行iozon

4、e, 如测试文件大小是64GB，record size分别是8k、64k等，设置-t 1测试单线程性能：iozone -az -r 8 -r 64 -r 512 -r 2048 -r 8192 -r 16384 -s 64g测试实例测试环境：Server:1 x SGI UV system with:32 x Intel Xeon E5-4650 2.7 GHz processors256 x 16 GB DIMMS (4 TB Total)External Storage:2 x SGI IS5500, each with 4 LUNs, each LUN with 7 x 600 GB 1

5、0K RPM SAS drives in RAID0Storage is attached via 8 Gb Fibre Channel HBAsOS and Virtualization Environment:Host & Guest OS: Red Hat Enterprise Linux Server release 6.3 kernel 2.6.32-279.el6.x86_64 SMPIOzone3 v3.414, assessing the I/O capabilities of external storage on UVIOzone benchmark 运行Direct I/

6、O，8个threads写50GB文件到两台IS5500上的8个LUN。当设置为Buffer Local时，在1颗处理器上运行iozone时的性能：附件：Iozone: Performance Test of File I/O Version $Revision: 3.408 $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 S

7、teve 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, Darren Sawyer. Ben England.Run b

8、egan: Fri Aug 3 11:23:01 2012Auto ModeCross over of record size disabled.Record Size 8 KBRecord Size 64 KBRecord Size 512 KBRecord Size 2048 KBRecord Size 8192 KBRecord Size 16384 KBFile size set to 67108864 KBCommand line used: /work/tools/bin/iozone -az -r 8 -r 64 -r 512 -r 2048 -r 8192 -r 16384 -

9、s 64gOutput is in Kbytes/secTime 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

10、 fread freread 67108864 8 691899 635989 1171700 1059668 23620 17259 79735 1444632 91315 125054 644104 1117667 1063399 67108864 64 1133062 1015879 1330988 1241119 153427 118331 398825 3709989 233600 602585 967243 1301613 1301115 67108864 512 1138563 1149134 1289309 1417717 578966 483686 851933 4370736 590095 1025895 1053763 1395027 1484704 67108864 2048 1217904 1072086 1457454 1263269 726279 659398 1078789 4646968 730749 1025927 948544 1486837 1322057 67108864 8192 1224203 1106440 1439307 1303689 870148 872624 1098921 104490 9