Vdbench-For-Linux简明操作手册.doc

Vdbench For Linux简明操作手册Vdbench is a disk and tape I/O workload generator for verifying data integrity and measuring performance of direct attached and network connected storage on Windows, Solaris, Linux, AIX, OS/X and HP/UX. 目 录一、运行环境3二、Vdbench目录说明3三、Vdbench基本命令介绍3四、Vdbench 脚本参数解释41、存储定义（Storage definition）42、工作负荷定义（Workload definition）53、测试运行定义（Run definition）64、脚本示例6一、运行环境 二、Vdbench目录说明1、 执行程序文件#./vdbench2、 软件操作说明文件#vdbench.pdf3、 示例脚本文件，及脚本说明#cd examples三、Vdbench基本命令介绍1、 进入Vdbench目录，给Vdbench执行文件赋予“777”权限。#cd /vdbench#chmod 777 vdbench2、 执行Vdbench测试命令。#./vdbench -f ./test/seq_read_sdb -o /testlog/seq_read_sdb_1命令解释：命 令描 述备 注./vdbench测试的执行文件-f指定测试脚本参数./test/seq_read_sdb测试脚本文件路径-o指定测试输入参数/testlog/seq_read_sdb_1测试结果输入路径四、Vdbench 脚本参数解释1、 存储定义（Storage definition）u raw:裸盘测试。示例：sd=sd1,lun=/dev/sdb,threads=32,openflags=o_direct描述：定义一个存储过程（sd），测试磁盘裸设备（/dev/sdb）。lun=/dev/sdb：指定测试的盘符，裸盘路径。threads=32：设置测试进程队列深度，常用有1、2、4、8、16、32、64等，数值越高表示对磁盘的压力越大。openflags=o_direct：处理缓存的方法。“o_direct”使用Linux的“O_DIRECT”选项不使用缓存直接写入磁盘。注意：测试过程组合有：sd、wd、rdu filesys:文件系统测试。1、测试单个文件示例1：sd=sd1,lun=/dir/a.file,size=100m,openflags=o_direct描述：定义一个存储过程（sd），测试“/div/a.file”文件，设定文件大小为100MB。lun=/dir/a.file：指定测试一个文件完整路径。注意：测试过程组合有：sd、wd、rd2、测试多个文件示例2：fsd=fsd1,anchor=/dir,depth=1,width=1,files=15,size=128k,openflags=o_direct描述：定义的是文件存储过程（fsd），指定存储路径为“/dir”。depth=1：路径的深度，数值代表文件夹的级别。width=1：每层文件夹下子文件夹数。files=15：测试最后一层文件夹中将自动生成的文件个数。size=128k：每个测试文件的大小。例：depth=3,width=2,files=15,size=1m测试最后一层一共生成23=8个文件夹，每个文件夹下生成15个文件，共有8*15*1=120MB的文件数据。注意：测试过程组合有：fsd、fwd、rdfsd参数详细说明：fsd=nameUnique name for this File System Definition.fsd=defaultAll parameters used will serve as default for all the following fsds.count=(nn,mm)Creates a sequence of FSD parameters.anchor=/dir/The name of the directory where the directory structure will be created.shared=yes/noDefault no: See FSD sharingwidth=nnHow many directories to create in each new directory.depth=nnHow many levels of directories to create under the anchor.files=nnHow many files to create in the lowest level of directories.sizes=(nn,nn,.)Specifies the size(s) of the files that will be created.distribution=allDefault bottom, creates files only in the lowest directories. allcreatesFiles in all directories.openflags=(flag,.)Pass extra flags to (Solaris) file system open request (See: man open)total_size=nnnStop after a total of nnn bytes of files have been created.workingsetsize=nnwss=nnCauses Vdbench to only use a subset of the total amount of files defined In the file structure. See workingsetsize.2、 工作负荷定义（Workload definition）u 测试裸盘，或测试单个文件示例：wd=wd1,sd=sd*,seekpct=seq,rdpct=100,xfersize=2m描述：定义一个工作量过程。通过“sd”参数指定前面所定义的存储过程，“sd*”表示所有“sd”开头的存储过程。seekpct：random(100) or sequential(0)* 100% random : seekpct=100* 100% sequential : seekpct=0* 20% random : seekpct=20rdpct：read(100) or write(0)* 100% read : rdpct=100* 100% write : rdpct=0* 70% read : rdpct=70xfersize：Data transfer size,default 4ku 测试多个文件示例：fwd=fwd1,fsd=fsd1,operation=read,xfersize=256k,fileio=sequential,fileselect=sequential,threads=6fwd参数详细说明：fwd=nameUnique name for this Filesystem Workload Definition.fwd=defaultAll parameters used will serve as default for all the following fwds.fsd=(xx,.)Name(s) of Filesystem Definitions to usehost=host_labelWhich host this workload to run on.fileio=randomHow file I/O will be done: random or sequentialfileio=sequentialHow file I/O will be done: random or sequentialfileio=(seq,delete)Sequential I/O: When opening for writes, first delete the filestopafter=nnnFor random I/O: stop and close file after nnn reads or writes. Default 100 for random I/O.fileselect=random/ sequentialHow to select file names or directory names for processing.xfersizes=nnSpecifies the data transfer size(s) to use for read and write operations.operation=xxxxSpecifies a single file system operation that must be done for this workload.rdpct=nnFor read and write only. This allows a mix and read and writes against a single file.skew=nnThe percentage of the total amount of work for this FWDthreads=nnHow many concurrent threads to run for this workload. (Make sure you have at least one file for each thread).3、 测试运行定义（Run definition）u 示例：rd=rd1,wd=wd*,elapsed=1800,interval=1,iorate=max描述：elapsed：Time of this run in seconds,default 30 secondsinterval：Reporting interval in secondsiorate：Run an uncontrolled workload4、 脚本示例* example1:sd=sd1,lun=/dev/sdb,threads=32,openflags=o_directwd=wd1,sd=sd*,seekpct=seq,rdpct=100,xfersize=2mrd=rd1,wd=wd*,elapsed=600,interval=1,iorate=max*说明* 测试磁盘设备（/dev/sdb），队列深度为32，采用2MB块大小，顺序读，测试时长为600秒。* example2:sd=sd1,lun=/dir/a.file, size=100m,openflags=o_directwd=wd1,sd=sd*,seekpct=seq,rdpct=100,xfersize=2mrd=rd1,wd=wd*,elapsed=600,interval=1,iorate=max*说明* 测试读出文件/dir/a.file，设置文件大小为100MB，以2MB块大小顺序读出，测试时长为600秒。* example3:fsd=fsd1,anchor=/dir,depth=1,width