RE: severe I/O performance issues on 2.4.22 SMP system

2003-11-10 Thread luca cecchi
You need the I/O patch made by info molnar. Bye -Original Message- From: Russell Coker [mailto:[EMAIL PROTECTED] Sent: domenica 2 novembre 2003 3.08 To: Daniel Erat Cc: debian-isp@lists.debian.org Subject: Re: severe I/O performance issues on 2.4.22 SMP system On Sat, 1 Nov 2003 10:33

RE: severe I/O performance issues on 2.4.22 SMP system

2003-11-10 Thread luca cecchi
You need the I/O patch made by info molnar. Bye -Original Message- From: Russell Coker [mailto:[EMAIL PROTECTED] Sent: domenica 2 novembre 2003 3.08 To: Daniel Erat Cc: [EMAIL PROTECTED] Subject: Re: severe I/O performance issues on 2.4.22 SMP system On Sat, 1 Nov 2003 10:33, Daniel

Re: severe I/O performance issues on 2.4.22 SMP system

2003-11-05 Thread Daniel Erat
On Sun, Nov 02, 2003 at 01:08:14PM +1100, Russell Coker wrote: > I am not sure what exactly needs to be done, I was not in a position > to do much testing. I suspect that you need to recompile without > high-mem support. [snip] Just as a followup, the problem appears to have gone away after we pu

Re: severe I/O performance issues on 2.4.22 SMP system

2003-11-05 Thread Daniel Erat
On Sun, Nov 02, 2003 at 01:08:14PM +1100, Russell Coker wrote: > I am not sure what exactly needs to be done, I was not in a position > to do much testing. I suspect that you need to recompile without > high-mem support. [snip] Just as a followup, the problem appears to have gone away after we pu

Re: severe I/O performance issues on 2.4.22 SMP system

2003-11-02 Thread Russell Coker
On Sat, 1 Nov 2003 10:33, Daniel Erat wrote: > > I solved this before by using a SUSE kernel source tree, but a Red Hat > > kernel source tree has the same patches. > > Thanks!  I'm hesistant to switch to the SUSE or Red Hat source trees > because of the large number of changes there.  If I just wa

Re: severe I/O performance issues on 2.4.22 SMP system

2003-11-02 Thread Russell Coker
On Sat, 1 Nov 2003 10:33, Daniel Erat wrote: > > I solved this before by using a SUSE kernel source tree, but a Red Hat > > kernel source tree has the same patches. > > Thanks!  I'm hesistant to switch to the SUSE or Red Hat source trees > because of the large number of changes there.  If I just wa

Re: severe I/O performance issues on 2.4.22 SMP system

2003-10-31 Thread Daniel Erat
On Sat, Nov 01, 2003 at 08:26:40AM +1100, Glenn Hocking wrote: > Hi Daniel > > My experience is that SMP is only great in some specific situations, > normally where all the software and hardware is built for the specific > SMP implementation. > > As an example, I had a lot of problems with DPTs R

Re: severe I/O performance issues on 2.4.22 SMP system

2003-10-31 Thread Daniel Erat
On Sat, Nov 01, 2003 at 08:37:42AM +1100, Russell Coker wrote: > On Sat, 1 Nov 2003 07:38, Daniel Erat wrote: > > The server has a SuperMicro Super P4DP6 motherboard with dual Xeon > > 2.4Ghz processors and 4 GB of RAM.  One of the two onboard Adaptec > > 7899P SCSI chipsets is being used to contro

Re: severe I/O performance issues on 2.4.22 SMP system

2003-10-31 Thread Daniel Erat
On Sat, Nov 01, 2003 at 08:26:40AM +1100, Glenn Hocking wrote: > Hi Daniel > > My experience is that SMP is only great in some specific situations, > normally where all the software and hardware is built for the specific > SMP implementation. > > As an example, I had a lot of problems with DPTs R

Re: severe I/O performance issues on 2.4.22 SMP system

2003-10-31 Thread Daniel Erat
On Sat, Nov 01, 2003 at 08:37:42AM +1100, Russell Coker wrote: > On Sat, 1 Nov 2003 07:38, Daniel Erat wrote: > > The server has a SuperMicro Super P4DP6 motherboard with dual Xeon > > 2.4Ghz processors and 4 GB of RAM.  One of the two onboard Adaptec > > 7899P SCSI chipsets is being used to contro

Re: severe I/O performance issues on 2.4.22 SMP system

2003-10-31 Thread Russell Coker
On Sat, 1 Nov 2003 07:38, Daniel Erat wrote: > The server has a SuperMicro Super P4DP6 motherboard with dual Xeon > 2.4Ghz processors and 4 GB of RAM.  One of the two onboard Adaptec 7899P > SCSI chipsets is being used to control a disk that has the OS, and a My experience is that the kernel.org k

Re: severe I/O performance issues on 2.4.22 SMP system

2003-10-31 Thread Glenn Hocking
Hi Daniel My experience is that SMP is only great in some specific situations, normally where all the software and hardware is built for the specific SMP implementation. As an example, I had a lot of problems with DPTs RAID controllers when they moved to I20 based hardware, and I started using Du

Re: severe I/O performance issues on 2.4.22 SMP system

2003-10-31 Thread Russell Coker
On Sat, 1 Nov 2003 07:38, Daniel Erat wrote: > The server has a SuperMicro Super P4DP6 motherboard with dual Xeon > 2.4Ghz processors and 4 GB of RAM.  One of the two onboard Adaptec 7899P > SCSI chipsets is being used to control a disk that has the OS, and a My experience is that the kernel.org k

Re: severe I/O performance issues on 2.4.22 SMP system

2003-10-31 Thread Glenn Hocking
Hi Daniel My experience is that SMP is only great in some specific situations, normally where all the software and hardware is built for the specific SMP implementation. As an example, I had a lot of problems with DPTs RAID controllers when they moved to I20 based hardware, and I started using Du