Re: Very Poor Raid Card Performance - Solved

2007-01-17 Thread Steven Lowry
Problem solved, I believe. Here is the results from Bonnie++ with the raid card set to "writethru" which writes directly to disk. Version 1.93c --Sequential Output-- --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine

Re: Very Poor Raid Card Performance

2007-01-16 Thread Juha Saarinen
On 1/17/07, Wood, Russell <[EMAIL PROTECTED]> wrote: I have an LSI MegaRaid with three drives at RAID 5: works a god-damn-treat. I don't know what my throughput is on RAID 5 but RAID 0 was fast (70MB/s+). Interesting. On my single SATA drive box I see: $ sudo dd if=/dev/ad8s1d of=/dev/zero bs=

Re: Very Poor Raid Card Performance

2007-01-16 Thread Ivan Voras
Wood, Russell wrote: > I have an LSI MegaRaid with three drives at RAID 5: works a > god-damn-treat. I don't know what my throughput is on RAID 5 but RAID 0 > was fast (70MB/s+). Mine was RAID5. Hmm, oops, it wasn't LSI but HP/Compaq CISS, battery backed, SATA on SAS. da0 at ciss0 bus 0 target 0

RE: Very Poor Raid Card Performance

2007-01-16 Thread Wood, Russell
> -Original Message- > From: [EMAIL PROTECTED] [mailto:owner-freebsd- > [EMAIL PROTECTED] On Behalf Of Ivan Voras > Sent: Wednesday, 17 January 2007 7:04 AM > To: freebsd-questions@freebsd.org > Subject: Re: Very Poor Raid Card Performance > > Steven Lowry wrote:

Re: Very Poor Raid Card Performance

2007-01-16 Thread Ivan Voras
Steven Lowry wrote: > The main problem is my HD performance, it is approx 6x slower than in > windows XP, hopefully there is a solution. I have an LSI Megaraid 8x with > four drives in a raid 5 configuration, in windows I was getting upto 60MB/s > transfer rates but in FBSD I am getting upto 9MB/s

Re: Very Poor Raid Card Performance

2007-01-16 Thread Bill Moran
In response to "Steven Lowry" <[EMAIL PROTECTED]>: > > On Tue, January 16, 2007 18:13, Bill Moran wrote: > > In response to "Steven Lowry" <[EMAIL PROTECTED]>: > >> > >> I have been very impressed with my FreeBSD 6.2 install, I have nearly > >> everything working but there are a few things which I

Re: Very Poor Raid Card Performance

2007-01-16 Thread Steven Lowry
On Tue, January 16, 2007 18:13, Bill Moran wrote: > In response to "Steven Lowry" <[EMAIL PROTECTED]>: >> >> I have been very impressed with my FreeBSD 6.2 install, I have nearly >> everything working but there are a few things which I need help with. >> >> The main problem is my HD performance, i

Re: Very Poor Raid Card Performance

2007-01-16 Thread Derek Ragona
With FreeBSD you can manage RAID in the OS or in your hardware (assuming hardware RAID support.) If you setup the RAID in the hardware, FreeBSD just "sees" the array as a large disk you can then partition. The advantage of doing the RAID in hardware is usually performance, but also you can du

Re: Very Poor Raid Card Performance

2007-01-16 Thread Bill Moran
In response to "Steven Lowry" <[EMAIL PROTECTED]>: > > I have been very impressed with my FreeBSD 6.2 install, I have nearly > everything working but there are a few things which I need help with. > > The main problem is my HD performance, it is approx 6x slower than in > windows XP, hopefully th

Very Poor Raid Card Performance

2007-01-16 Thread Steven Lowry
Hello, I have been very impressed with my FreeBSD 6.2 install, I have nearly everything working but there are a few things which I need help with. The main problem is my HD performance, it is approx 6x slower than in windows XP, hopefully there is a solution. I have an LSI Megaraid 8x with four d