基于IOzone的性能测试方案.docx

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。必威体育精装版的iozone可以从下载。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 Rewrite, Strided Read, Fwrite, Frewrite, Fread, Freread, Write with Mmap, Rewrite with Mmap, Reader with mmap, Re-reader with mmap, Writer PosixAsync I/O,Re-writer PosixAsync I/O, Reader PosixAsync I/O, Re-reader PosixAsync 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UV2000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iozone, 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 10K 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 UVIOzonebenchmark 运行Direct I/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:WilliamNorcott, 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, Dav