Date: Fri, 04 Feb 2005 13:13:48 +0000 From: Sergej Kandyla <paix@uts.com.ua> To: freebsd-performance@freebsd.org Subject: Re: My disk I/O testing methods for FreeBSD 5.3 ... Message-ID: <4203750C.2010003@uts.com.ua> In-Reply-To: <1170.172.16.0.199.1107485566.squirrel@172.16.0.199> References: <dc9ba044050203143647cee0c2@mail.gmail.com> <20050203175519.K18864@mail.chesapeake.net> <dc9ba0440502031548544723a1@mail.gmail.com> <1170.172.16.0.199.1107485566.squirrel@172.16.0.199>
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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@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@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
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