Re: Very slow raid performance with ami(4)

2007-04-01 Thread Siegbert Marschall
Hello, > On 2007/03/30 13:18, Roy Kim wrote: >> I didn't realize there's two different batteries. What does the >> 'intelligent' version of the battery do extra? > > LSIiBBU01 (intelligent) has some kind of comms relating to charge state > etc, I think it may also have a longer runtime. > > LSIBBU

Re: Very slow raid performance with ami(4)

2007-03-31 Thread Roy Kim
Do you know if an Intel-rebadged srcs28x would care if i plugged in an lsi battery? On visual inspection the hardware looks 100% identical. Probably the only thing changed is the firmware.. On 3/30/07, Stuart Henderson <[EMAIL PROTECTED]> wrote: On 2007/03/30 13:18, Roy Kim wrote: > I didn't rea

Re: Very slow raid performance with ami(4)

2007-03-30 Thread Clint Pachl
Marco Peereboom wrote: LSI megaraid cards will ALWAYS disable write cache whenever there is no battery backed up memory on the card. No exceptions. The only thing you can do is purchase a BBU and replace the current DIMM. People state disk throughput numbers, but how are these measured? I

Re: Very slow raid performance with ami(4)

2007-03-30 Thread Stuart Henderson
On 2007/03/30 13:18, Roy Kim wrote: > I didn't realize there's two different batteries. What does the > 'intelligent' version of the battery do extra? LSIiBBU01 (intelligent) has some kind of comms relating to charge state etc, I think it may also have a longer runtime. LSIBBU03 (non-intelligent)

Re: Very slow raid performance with ami(4)

2007-03-30 Thread Roy Kim
I didn't realize there's two different batteries. What does the 'intelligent' version of the battery do extra? On 3/30/07, Stuart Henderson <[EMAIL PROTECTED]> wrote: On 2007/03/30 11:07, Roy Kim wrote: > Recently I bought an Intel SRCS28X (LSI Megaraid 300-8X card in > disguise) and I'm getting

Re: Very slow raid performance with ami(4)

2007-03-30 Thread Stuart Henderson
On 2007/03/30 11:07, Roy Kim wrote: > Recently I bought an Intel SRCS28X (LSI Megaraid 300-8X card in > disguise) and I'm getting terrible performance out of it. Reads are > fine at around 90mb/s but writes bog down at 3mb/s. I dont have the > battery unit installed but 3mb/s is ridiculous.. I hav

Re: Very slow raid performance with ami(4)

2007-03-30 Thread Marco Peereboom
LSI megaraid cards will ALWAYS disable write cache whenever there is no battery backed up memory on the card. No exceptions. The only thing you can do is purchase a BBU and replace the current DIMM. On Fri, Mar 30, 2007 at 12:27:02PM -0500, Jacob Yocom-Piatt wrote: > Roy Kim wrote: > >Recently I

Re: Very slow raid performance with ami(4)

2007-03-30 Thread Jacob Yocom-Piatt
Roy Kim wrote: Recently I bought an Intel SRCS28X (LSI Megaraid 300-8X card in disguise) and I'm getting terrible performance out of it. Reads are fine at around 90mb/s but writes bog down at 3mb/s. I dont have the battery unit installed but 3mb/s is ridiculous.. roy, installed the battery un

Very slow raid performance with ami(4)

2007-03-30 Thread Roy Kim
Recently I bought an Intel SRCS28X (LSI Megaraid 300-8X card in disguise) and I'm getting terrible performance out of it. Reads are fine at around 90mb/s but writes bog down at 3mb/s. I dont have the battery unit installed but 3mb/s is ridiculous.. OpenBSD 4.0 (GENERIC) #1107: Sat Sep 16 19:15:5