SQLIO Disk Subsystem Benchmark Tool

C:\Program Files (x86)\SQLIO>sqlio -?

sqlio v1.5.SG

-?: invalid option

Usage: sqlio [options] [<filename>...]

        [options] may include any of the following:

        -k<R|W>                 kind of IO (R=reads, W=writes)

        -t<threads>             number of threads

        -s<secs>                number of seconds to run

        -d<drv_A><drv_B>..      use same filename on each drive letter given

        -R<drv_A/0>,<drv_B/1>.. raw drive letters/number for I/O

        -f<stripe factor>       stripe size in blocks, random, or sequential

        -p[I]<cpu affinity>     cpu number for affinity (0 based)(I=ideal)

        -a[R[I]]<cpu mask>      cpu mask for (R=roundrobin (I=ideal)) affinity

        -o<#outstanding>        depth to use for completion routines

        -b<io size(KB)>         IO block size in KB

        -i<#IOs/run>            number of IOs per IO run

        -m<[C|S]><#sub-blks>    do multi blk IO (C=copy, S=scatter/gather)

        -L<[S|P][i|]>           latencies from (S=system, P=processor) timer

        -B<[N|Y|H|S]>           set buffering (N=none, Y=all, H=hdwr, S=sfwr)

        -S<#blocks>             start I/Os #blocks into file

        -v1.1.1                 I/Os runs use same blocks, as in version 1.1.1

        -F<paramfile>           read parameters from <paramfile>

Defaults:

        -kR -t1 -s30 -f64 -b2 -i64 -BN testfile.dat

Maximums:

        -t (threads):                   256

        no. of files, includes -d & -R: 256

        filename length:                256



C:\Program Files (x86)\SQLIO>

参数 –kW 表示模拟写的情况,如果是-kR则表示写;
参数 –t2 表示两个线程
参数 –s120表示测试2分钟
参数 –dM 表示具体的盘符
参数 –o1表示outstanding IO的数目
参数 –frandom表示随机模式,相反的是sequential 序列模式
参数 –b64 表示每个IO大小为64K

 

1 sqlio -kW -t2 -s120 -dM -o1 -frandom -b64 -BH -LS Testfile.dat

2 sqlio -kW -t2 -s120 -dM -o2 -frandom -b64 -BH -LS Testfile.dat

3 sqlio -kW -t2 -s120 -dM -o4 -frandom -b64 -BH -LS Testfile.dat

4 sqlio -kW -t2 -s120 -dM -o8 -frandom -b64 -BH -LS Testfile.dat

需要到以下地址下载

http://www.microsoft.com/en-us/download/details.aspx?id=20163

 

I/O 特性

操作

随机/顺序

/

大小范围

Create   Database

顺序

512KB

Backup   Database

顺序

/

64KB的倍数(最多4MB

Restore Database

顺序

/

64KB的倍数(最多4MB

DBCC-CHECKDB

顺序

8KB~64KB

Alter   Index - on - rebuild (读阶段)

顺序

 

Alter   Index - on - rebuild (写阶段)

随机或顺序

8KB的背书,最多128KB

Sys.dm_db_index_phyical_stats

http://technet.microsoft.com/zh-cn/library/ms181929.aspx

顺序

8KB~64KB

INSERT/UPDATE/DELETE

随机或顺序

64KB~512KB

SELECT

随机或顺序

51KB~5124KB

TempDB

随机或顺序

/

8KB~64KB

事务日志

顺序

60KB

 

http://technet.microsoft.com/en-us/library/cc966412.aspx

你可能感兴趣的:(System)