专业的测试磁盘IO性能的软件： 1、fio 【推荐使用】 2、iometer fio的使用： 参考博客： http://lilinji.blog.51cto.com/5441000/1569623 https...://linux.die.net/man/1/fio http://elf8848.iteye.com/blog/2168876 【讲的比较好】 注意，我先使用yum安装的fio，测试时候报错，建议使用最新版的.../configure make 即可在当前目录下生成fio可执行文件。 fio的几个参数： filename=/bdata/test.big 测试文件名称，通常选择需要测试的盘所在的目录。...sync=1 设置异步io fsync=1 一个io就同步数据 帮助命令： fio --help fio --cmdhelp 等等 # 准备个2GB的测试用的文件 dd if=/dev/zero of...=/bdata/test.big bs=4k count=524288 # 通常在需要测试的那个磁盘下面生成一个这种测试用的大文件 测试随机读写： fio --filename=/bdata/test.big
Fio（Flexible I/O Tester） 是一款由 Jens Axboe 开发的用于测评和压力/硬件验证的自由开源的软件。...)， I/O 优先级（针对较新的 Linux 内核），I/O 速度，fork 的任务或线程任务等等。...Fio 接受一种非常简单易于理解的文本格式的任务描述。软件默认包含了几个示例任务文件。 Fio 展示了所有类型的 I/O 性能信息，包括完整的 IO 延迟和百分比。...在 Debian 系统安装 Fio 对于 Debian 来说， Fio 已经在主仓库内。我们可以很容易的使用 apt-get 的包管理器安装。.../configure # make # make install 使用 Fio 进行磁盘性能测试 现在 Fio 已经安装到了你的系统中，我们一起看看如何使用 Fio 做磁盘的随机写、读和读写测试。
前言 fio是一个适应性非常强的软件，基本上能够模拟所有的IO请求，是目前最全面的一款测试软件，之前在看德国电信的一篇分享的时候，里面就提到了，如果需要测试存储性能，尽量只用一款软件，这样从上层测试到底层去...，才能更好的去比较差别 fio对于ceph来说，可以测试文件系统，基于文件系统之上测试，可以测试内核rbd，将rbdmap到本地格式化以后进行测试，或者基于librbd直接对rbd进行测试，这个是目前都已经有的测试场景...，这就是本篇需要讲述的内容 实践过程 fio engine for objectstore 这个是在ceph的11.0.2这个版本才正式发布出来的，可以看这个pr(pr10267),11.0.2是ceph.../fio.git 下载ceph的代码 下载代码并且切换到指定的11.0.2分支，不要用master分支，里面还没有合进去，并且还有bug [root@lab8106 ~]# cd /root/newceph...配置测试 下面需要准备两个配置文件，一个是ceph自身的，一个是fio配置文件，我们看下我的环境下这个配置文件如何写的 写fio的测试文件 vim filestore.fio [global] ioengine
下面对各参建数进行解释 Option Comment -filename=/tmp/iotest/test 设定测试文件名 -direct=1 不使用缓存 -iodepth 1 io队列的深度 -thread...使用线程模式 -rw=randrw 使用随机读写模式 -rwmixread=70 随机读写下读占比70% -ioengine=psync 使用psync的io引擎 -bs=16k 设定单次IO的block...size大小 -size=5G 此job中产生的io总量 -numjobs=3 线程数 -runtime=100 指定运行时间 -group_reporting 以组的方式来输出报告 -name=mytest...30% 4.blocksize并不统固定，其中4k占比10%，64K占比50%，32k占比40% 5.总大小为5G 6.50秒钟给出结果 [root@iZ116haf49sZ iotest]# time fio...group_reporting -name=mytest mytest: (g=0): rw=randrw, bs=4K-64K/4K-64K/4K-64K, ioengine=psync, iodepth=4 ... fio
This value can be in milliseconds or microseconds, fio will choose the most appropriate base and...This is the time from when IO leaves fio and when it gets completed....It is also possible to get fio to dump the current output while it is running, without terminating the...To do that, send fio the USR1 signal....If fio sees this file, it will unlink it and dump the current output status.
falloc IO engine that does regular fallocate to simulate data transfer as fio ioengine....HDFS, and engine will randomly pick a file out of those files based on the offset generated by fio...This may happen on Linux when using libaio and not setting direct=1, since buffered IO is not async...Keep an eye on the IO depth distribution in the fio output to verify that the achieved depth is as
Only supported on Linux. Note, this option may change going forward....If not set, fio will use the full size of the given files or devices....With this option, it is possible to define just the amount of IO that fio should do....Normally fio will operate within the size of a file....If this option is set, then fio will append to the file instead.
gtod_cpu=int Sometimes it'scheapertodedicateasinglethreadofexecutiontojustgettingthecurrenttime.Fio(anddatabases
local/bin/fio [root@iZ116haf49sZ bin]# /usr/local/bin/fio -h fio-2.1.10 /usr/local/bin/fio [options]...executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, not...shared libs), for GNU/Linux 2.6.18, not stripped /usr/local/bin/fio-dedupe: ELF 64-bit LSB executable..., x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, not stripped...ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux
With the above in mind, here follows the complete list of fio job parameters....This may be used to override the name printed by fio for this job....filename=str Fio normally makes up a filename based on the job name, thread number, and file number...filename_format=str If sharing multiple files between jobs, it is usually necessary to have fio...lockfile=str Fio defaults to not locking any files before it does IO to them.
--------- For scripted usage where you typically want to generate tables or graphs of the results, fio...Split up, the format is as follows: terse version, fio version, jobname, groupid, error READ status...description Completion latency percentiles can be a grouping of up to 20 sets, so for the terse output fio...For disk utilization, all disks used by fio are shown.
Normally fio includes a header with some basic information and checksumming, but if this option...If the data direction given is a read or random read, fio will assume that it should verify a previously...verifysort=bool If set, fio will sort written verify blocks when it deems it faster to read them back...verify_pattern=str If set, fio will fill the io buffers with this pattern....Fio defaults to filling with totally random bytes, but sometimes it'sinterestingtofillwithaknownpatternforioverificationpurposes.Dependingonthewidthofthepattern
If fio is run with --trigger-file=/tmp/trigger-file, then it will continually check for the existence...: localbox$ fio --client=server --trigger-file=/tmp/my-trigger --trigger-remote="bash -c \"echo b >...On localbox, we could then have run fio with a local trigger instead: localbox$ fio --client=server...If that is set, fio will load the previously stored state....[root@iZ116haf49sZ fio]#
异步的话就是用类似libaio这样的Linux native aio一次提交一批，然后等待一批的完成，减少交互的次数，会更有效率。...io队列深度通常对不同的设备很敏感，那么如何用fio来探测出合理的值呢？...可以通过配置文件来配置压力测试的方式，可以用选项 --debug=io来检测fio是否工作 [root@vmforDB05 tmp]# cat fio_test [global] bsrange=...iometer 1.1.0 GA版本采用了Linux Kernel AIO方式，同时仅支持Direct IO。所以说，该版本也并非完美的异步IO解决方案应用。...一般平常测试都用FIO，参数多测的类型丰富也比较准确。 本文转载自网络
前言 fio 是一款非常经典的开源磁盘io测试工具 fio is an I/O tool meant to be used both for benchmark and stress/hardware...posixaio, SG v3, splice, null, network, syslet, guasi, solarisaio, and more), I/O priorities (for newer Linux...It supports Linux, FreeBSD, NetBSD, OpenBSD, OS X, OpenSolaris, AIX, HP-UX, Android, and Windows....这里介绍一下 fio 的基础操作，详细可以参考 官方文档 Tip: 当前版本 fio-2.2.11 ，访问官网可能得翻墙 ---- 概要 ---- 下载 [root@iZ116haf49sZ ~]# git...[root@iZ116haf49sZ ~]# ls fio [root@iZ116haf49sZ ~]# [root@iZ116haf49sZ ~]# cd fio/ [root@iZ116haf49sZ
whichallowsfiotoreplayaworkloadcapturedbyblktrace.Seeblktraceforhowtocapturesuchloggingdata.Forblktracereplay,thefileneedstobeturnedintoablkparsebinarydatafilefirst(blkparse-o/dev/null-dfile_for_fio.bin
This format is not supported in Fio versions => 1.20-rc3. 8.2 Trace file format v2 ----------------...-------- The second version of the trace file format was added in Fio version 1.17....The first line of the trace file has to be: fio version 2 iolog Following this can be lines in two...When the write phase has completed, fio switches to reads and verifies everything it wrote....With verification triggers, fio supports dumping the current write state to local files.
--bs=32k --direct=0 --size=64m --numjobs=4When fio is utilized as a basis ofany reasonably large test...test filesize=1m include glob-include.fio [test] rw=randread bs=4k time_based=1 runtime=10 include test-include.fio...; -- end job file including.fio -- ; -- start job file glob-include.fio -- thread=1 group_reporting...=1 ; -- end job file glob-include.fio -- ; -- start job file test-include.fio -- ioengine=libaio iodepth...invocation and job file: $ SIZE=64m NUMJOBS=4 fio jobfile.fio ; -- start job file -- [random-writers
/configure Operating system Linux CPU x86_64 Big endian...Static build no Wordsize 64 zlib yes Linux...__sync_fetch_and_add yes libverbs no rdmacm no Linux...fdatasync yes sync_file_range yes EXT4 move extent yes Linux...CC blktrace.o CC cgroup.o CC trim.o CC engines/sg.o CC engines/binject.o CC lib/linux-dev-lookup.o
Theallowedvaluesare:noneExitonanyIOorverifyerrors.readContinueonreaderrors,exito...
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