Re: Slow write performance on Compaq Smart Array 64xx (ciss0)

2007-01-29 Thread mickey
On Sun, Jan 28, 2007 at 05:32:41PM +0100, Henning Brauer wrote: * Vijay Sankar [EMAIL PROTECTED] [2007-01-28 16:07]: bioctl -h ciss0 gives me bioctl: Can't locate ciss0 device via /dev/bio ciss doesn't support bio yet. rtfm bio(4) support is only possible for one volume right now. so

Re: Slow write performance on Compaq Smart Array 64xx (ciss0)

2007-01-29 Thread Johan M:son Lindman
On Sunday 28 January 2007 22:21, you wrote: On Sun, Jan 28, 2007 at 11:28:27AM -0800, Joe wrote: Some more tests: # dd if=/dev/zero of=./testfile count=100 100+0 records in 100+0 records out 51200 bytes transferred in 16.354 secs (31306797 bytes/sec) # dd

Re: Slow write performance on Compaq Smart Array 64xx (ciss0)

2007-01-28 Thread Brian Candler
On Sun, Jan 28, 2007 at 12:29:21AM -0800, Joe wrote: Why is the write performance of my RAID controller so slow? ... (write test running bsd kernel) # dd if=/dev/zero of=/data/testfile count=2 bs=128k 2+0 records in 2+0 records out 262144 bytes transferred in 113.978 secs

Re: Slow write performance on Compaq Smart Array 64xx (ciss0)

2007-01-28 Thread Vijay Sankar
On Sunday 28 January 2007 08:45, Brian Candler wrote: On Sun, Jan 28, 2007 at 12:29:21AM -0800, Joe wrote: Why is the write performance of my RAID controller so slow? ... (write test running bsd kernel) # dd if=/dev/zero of=/data/testfile count=2 bs=128k 2+0 records in

Re: Slow write performance on Compaq Smart Array 64xx (ciss0)

2007-01-28 Thread Henning Brauer
* Vijay Sankar [EMAIL PROTECTED] [2007-01-28 16:07]: bioctl -h ciss0 gives me bioctl: Can't locate ciss0 device via /dev/bio ciss doesn't support bio yet. -- Henning Brauer, [EMAIL PROTECTED], [EMAIL PROTECTED] BS Web Services, http://bsws.de Full-Service ISP - Secure Hosting, Mail and DNS

Re: Slow write performance on Compaq Smart Array 64xx (ciss0)

2007-01-28 Thread Vijay Sankar
On Sunday 28 January 2007 10:32, Henning Brauer wrote: * Vijay Sankar [EMAIL PROTECTED] [2007-01-28 16:07]: bioctl -h ciss0 gives me bioctl: Can't locate ciss0 device via /dev/bio ciss doesn't support bio yet. Thank you very much, I will wait, for sure. I thought it was supported

Re: Slow write performance on Compaq Smart Array 64xx (ciss0)

2007-01-28 Thread Joe
Brian Candler wrote: On Sun, Jan 28, 2007 at 12:29:21AM -0800, Joe wrote: Why is the write performance of my RAID controller so slow? ... (write test running bsd kernel) # dd if=/dev/zero of=/data/testfile count=2 bs=128k 2+0 records in 2+0 records out 262144 bytes transferred

Re: Slow write performance on Compaq Smart Array 64xx (ciss0)

2007-01-28 Thread Bill Marquette
On 1/28/07, Henning Brauer [EMAIL PROTECTED] wrote: * Vijay Sankar [EMAIL PROTECTED] [2007-01-28 16:07]: bioctl -h ciss0 gives me bioctl: Can't locate ciss0 device via /dev/bio ciss doesn't support bio yet. Unless I'm mistaken, mickey@ added it pre-4.0 here:

Re: Slow write performance on Compaq Smart Array 64xx (ciss0)

2007-01-28 Thread Brian Candler
On Sun, Jan 28, 2007 at 11:28:27AM -0800, Joe wrote: Some more tests: # dd if=/dev/zero of=./testfile count=100 100+0 records in 100+0 records out 51200 bytes transferred in 16.354 secs (31306797 bytes/sec) # dd if=./testfile of=/dev/null count=100 100+0

Re: Slow write performance on Compaq Smart Array 64xx (ciss0)

2007-01-28 Thread Henning Brauer
* Henning Brauer [EMAIL PROTECTED] [2007-01-28 17:37]: * Vijay Sankar [EMAIL PROTECTED] [2007-01-28 16:07]: bioctl -h ciss0 gives me bioctl: Can't locate ciss0 device via /dev/bio ciss doesn't support bio yet. err, sorry, I missed that it is now, to some extent. -- Henning Brauer,