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 were

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, and

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 as

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

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 benchmarks, when in

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

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

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: 250

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: 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.

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

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

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

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