My disk I/O testing methods for FreeBSD 5.3 ...

[Sergej Kandyla]

My test.
FreeBSD 4.10-RELEASE-p5

CPU: Intel Pentium III (1005.03-MHz 686-class CPU)
real memory  = 335458304 (327596K bytes)  (PC100)
ad0: 57241MB <ST360021A> [116301/16/63] at ata0-master UDMA100


[13:04:13]paix at sk(~)$ time dd bs=1024 if=/dev/zero of=tstfile count=1048576
1048576+0 records in
1048576+0 records out
1073741824 bytes transferred in 28.167481 secs (38119909 bytes/sec)

real    0m28.236s
user    0m0.785s
sys     0m18.901s
[13:05:13]paix at sk(~)$





Mike Jakubik wrote:

>Nick Pavlica said:
>  
>
>>Jeff,
>>  One of the tests where I saw a large difference was in DD.  I did a
>>quick test on a server that was brought up to RELENG_5 via cvsup on
>>2/2/05.
>>
>>The Test:
>>-bash-2.05b$ time dd bs=1024 if=/dev/zero of=tstfile count=1M
>>1048576+0 records in
>>1048576+0 records out
>>1073741824 bytes transferred in 74.402757 secs (14431479 bytes/sec)
>>
>>real    1m14.498s
>>user    0m0.550s
>>sys     0m8.838s
>>    
>>
>
>FYI.
>
># time dd bs=1024 if=/dev/zero of=tstfile count=1M
>1048576+0 records in
>1048576+0 records out
>1073741824 bytes transferred in 22.150709 secs (48474377 bytes/sec)
>
>real    0m22.173s
>user    0m0.501s
>sys     0m13.832s
>
>This is on an old ATA disk.
>
>FreeBSD 6.0-CURRENT #0: Wed Jan 19 21:11:16 EST 2005.
>
>CPU: AMD Athlon(tm) Processor (1410.21-MHz 686-class CPU)
>real memory  = 536788992 (511 MB)
>acpi0: <ASUS A7V-133> on motherboard
>
>ad0: 78167MB <Maxtor 6Y080P0/YAR41BW0> [158816/16/63] at ata0-master UDMA100
>
>
>  
>

-- 
wbw, paix