Re: SATA Raid (stress test..)

2006-03-07 Thread Beastie
Nikolas Britton wrote: On 3/5/06, Beastie <[EMAIL PROTECTED]> wrote: Nikolas Britton wrote: On 3/3/06, Alex Zbyslaw <[EMAIL PROTECTED]> wrote: Nikolas Britton wrote: Please can you be careful when you attribute your comments. You've sent this email "to" me, a

Re: SATA Raid (stress test..)

2006-03-07 Thread Nikolas Britton
On 3/5/06, Beastie <[EMAIL PROTECTED]> wrote: > Nikolas Britton wrote: > On 3/3/06, Alex Zbyslaw <[EMAIL PROTECTED]> wrote: > Nikolas Britton wrote: > > Please can you be careful when you attribute your comments. You've sent this > email "to" me, and left only my name in the attributions as if I

Re: SATA Raid (stress test..)

2006-03-05 Thread Beastie
Nikolas Britton wrote: On 3/3/06, Alex Zbyslaw <[EMAIL PROTECTED]> wrote: Nikolas Britton wrote: Please can you be careful when you attribute your comments. You've sent this email "to" me, and left only my name in the attributions as if I were someone suggesting either dd or diskinfo

Re: SATA Raid (stress test..)

2006-03-03 Thread Nikolas Britton
On 3/3/06, Alex Zbyslaw <[EMAIL PROTECTED]> wrote: > Nikolas Britton wrote: > > >>Please can you be careful when you attribute your comments. You've sent > >>this email "to" me, and left only my name in the attributions as if I > >>were someone suggesting either dd or diskinfo as accurate benchmar

Re: SATA Raid (stress test..)

2006-03-03 Thread Alex Zbyslaw
Nikolas Britton wrote: Please can you be careful when you attribute your comments. You've sent this email "to" me, and left only my name in the attributions as if I were someone suggesting either dd or diskinfo as accurate benchmarks, when in fact my contribution was to suggest unixbench and sa

Re: SATA Raid (stress test..)

2006-03-02 Thread Nikolas Britton
On 3/2/06, Alex Zbyslaw <[EMAIL PROTECTED]> wrote: > Nikolas Britton wrote: > > >This and all the other benchmarks you've run are useless. Run a real > >benchmark like iozone. It's in ports under benchmarks/iozone. > >http://www.iozone.org/ > > > > > Please can you be careful when you attribute you

Re: SATA Raid (stress test..)

2006-03-02 Thread Alex Zbyslaw
Nikolas Britton wrote: This and all the other benchmarks you've run are useless. Run a real benchmark like iozone. It's in ports under benchmarks/iozone. http://www.iozone.org/ Please can you be careful when you attribute your comments. You've sent this email "to" me, and left only my name

Re: SATA Raid (stress test..)

2006-03-02 Thread Nikolas Britton
On 3/2/06, Alex Zbyslaw <[EMAIL PROTECTED]> wrote: > [snipped] > > Why not happy? Transfer rates from 53 to 92Mb/s, give or take; what's > wrong with that? On a plain sata disk I get: > > Seek times: > Full stroke: 250 iter in 4.717248 sec = 18.869 msec > Half stroke:

Re: SATA Raid (stress test..)

2006-03-02 Thread Alex Zbyslaw
Beastie wrote: second tools is diskinfo, but i'm not quite happy with the result. #diskinfo -t /dev/amrd0s1d /dev/amrd0s1d 512 # sectorsize 96609024# mediasize in bytes (931G) 1953118377 # mediasize in sectors 121575 # Cylinders acc

Re: SATA Raid (stress test..)

2006-03-02 Thread Beastie
Your performance sucks because, to quote the manual, "Input data is read and written in 512-byte blocks". Try a sensible blocksize. 16k would mimic a standard file system block, but even that is likely to underestimate. If you were, say, copying the disk to another you could easily use 1

Re: SATA Raid (stress test..)

2006-03-01 Thread Beastie
Your performance sucks because, to quote the manual, "Input data is read and written in 512-byte blocks". Try a sensible blocksize. 16k would mimic a standard file system block, but even that is likely to underestimate. If you were, say, copying the disk to another you could easily use 1

Re: SATA Raid (stress test..)

2006-03-01 Thread Alex Zbyslaw
Beastie wrote: I try to test with dd simple command dd if=/dev/amrd0s1d of=/dev/null ^C31297+0 records in 31297+0 records out 16024064 bytes transferred in 7.970548 secs (2010409 bytes/sec) the result is very slow performance (-+ 2 Mbytes/sec), with write cache enable on drive. :( Your perf

Re: SATA Raid (stress test..)

2006-03-01 Thread Beastie
Beastie wrote: Beastie wrote: Robert Uzzi wrote: That still dosen't connedt SATA to a non sata board though. That's my situation I have 6 SATA drives but no SATA native board. Looking for a cheap addin card to build this upon. I'll buy Intel SRCS16 (500$) this week, will talk to u lat

Re: SATA Raid (stress test..)

2006-02-28 Thread Beastie
Beastie wrote: Robert Uzzi wrote: That still dosen't connedt SATA to a non sata board though. That's my situation I have 6 SATA drives but no SATA native board. Looking for a cheap addin card to build this upon. I'll buy Intel SRCS16 (500$) this week, will talk to u later about it's co