Re: [PATCH] lock stat for -rt 2.6.20-rc2-rt2 [was Re: 2.6.19-rt14 slowdown compared to 2.6.19]

2007-01-02 Thread hui
On Tue, Jan 02, 2007 at 03:12:34PM -0800, Bill Huey wrote: > On Tue, Jan 02, 2007 at 02:51:05PM -0800, Chen, Tim C wrote: > > Bill, > > > > I'm having some problem getting this patch to run stablely. I'm > > encoutering errors like that in the trace that follow: > > It might the case that the

Re: [PATCH] lock stat for -rt 2.6.20-rc2-rt2 [was Re: 2.6.19-rt14 slowdown compared to 2.6.19]

2007-01-02 Thread hui
On Tue, Jan 02, 2007 at 02:51:05PM -0800, Chen, Tim C wrote: > Bill, > > I'm having some problem getting this patch to run stablely. I'm > encoutering errors like that in the trace that follow: > > Thanks. > Tim > > Unable to handle kernel NULL pointer dereference at 0008 Yes,

RE: [PATCH] lock stat for -rt 2.6.20-rc2-rt2 [was Re: 2.6.19-rt14 slowdown compared to 2.6.19]

2007-01-02 Thread Chen, Tim C
Bill Huey (hui) wrote: > On Tue, Dec 26, 2006 at 04:51:21PM -0800, Chen, Tim C wrote: >> Ingo Molnar wrote: >>> If you'd like to profile this yourself then the lowest-cost way of >>> profiling lock contention on -rt is to use the yum kernel and run >>> the attached trace-it-lock-prof.c code on the

RE: [PATCH] lock stat for -rt 2.6.20-rc2-rt2 [was Re: 2.6.19-rt14 slowdown compared to 2.6.19]

2007-01-02 Thread Chen, Tim C
Bill Huey (hui) wrote: On Tue, Dec 26, 2006 at 04:51:21PM -0800, Chen, Tim C wrote: Ingo Molnar wrote: If you'd like to profile this yourself then the lowest-cost way of profiling lock contention on -rt is to use the yum kernel and run the attached trace-it-lock-prof.c code on the box while

Re: [PATCH] lock stat for -rt 2.6.20-rc2-rt2 [was Re: 2.6.19-rt14 slowdown compared to 2.6.19]

2007-01-02 Thread hui
On Tue, Jan 02, 2007 at 02:51:05PM -0800, Chen, Tim C wrote: Bill, I'm having some problem getting this patch to run stablely. I'm encoutering errors like that in the trace that follow: Thanks. Tim Unable to handle kernel NULL pointer dereference at 0008 Yes, those are

Re: [PATCH] lock stat for -rt 2.6.20-rc2-rt2 [was Re: 2.6.19-rt14 slowdown compared to 2.6.19]

2007-01-02 Thread hui
On Tue, Jan 02, 2007 at 03:12:34PM -0800, Bill Huey wrote: On Tue, Jan 02, 2007 at 02:51:05PM -0800, Chen, Tim C wrote: Bill, I'm having some problem getting this patch to run stablely. I'm encoutering errors like that in the trace that follow: It might the case that the lock isn't

Re: [PATCH] lock stat for -rt 2.6.20-rc2-rt2 [was Re: 2.6.19-rt14 slowdown compared to 2.6.19]

2006-12-30 Thread hui
On Sat, Dec 30, 2006 at 06:56:08AM -0800, Daniel Walker wrote: > On Sat, 2006-12-30 at 12:19 +0100, Ingo Molnar wrote: > > > > > - Documentation/CodingStyle compliance - the code is not ugly per se > >but still looks a bit 'alien' - please try to make it look Linuxish, > >if i apply

Re: [PATCH] lock stat for -rt 2.6.20-rc2-rt2 [was Re: 2.6.19-rt14 slowdown compared to 2.6.19]

2006-12-30 Thread Daniel Walker
On Sat, 2006-12-30 at 12:19 +0100, Ingo Molnar wrote: > > - Documentation/CodingStyle compliance - the code is not ugly per se >but still looks a bit 'alien' - please try to make it look Linuxish, >if i apply this we'll probably stick with it forever. This is the >major reason i

Re: [PATCH] lock stat for -rt 2.6.20-rc2-rt2 [was Re: 2.6.19-rt14 slowdown compared to 2.6.19]

2006-12-30 Thread Ingo Molnar
* Bill Huey <[EMAIL PROTECTED]> wrote: > On Tue, Dec 26, 2006 at 04:51:21PM -0800, Chen, Tim C wrote: > > Ingo Molnar wrote: > > > If you'd like to profile this yourself then the lowest-cost way of > > > profiling lock contention on -rt is to use the yum kernel and run the > > > attached

Re: [PATCH] lock stat for -rt 2.6.20-rc2-rt2 [was Re: 2.6.19-rt14 slowdown compared to 2.6.19]

2006-12-30 Thread Ingo Molnar
* Bill Huey [EMAIL PROTECTED] wrote: On Tue, Dec 26, 2006 at 04:51:21PM -0800, Chen, Tim C wrote: Ingo Molnar wrote: If you'd like to profile this yourself then the lowest-cost way of profiling lock contention on -rt is to use the yum kernel and run the attached trace-it-lock-prof.c

Re: [PATCH] lock stat for -rt 2.6.20-rc2-rt2 [was Re: 2.6.19-rt14 slowdown compared to 2.6.19]

2006-12-30 Thread Daniel Walker
On Sat, 2006-12-30 at 12:19 +0100, Ingo Molnar wrote: - Documentation/CodingStyle compliance - the code is not ugly per se but still looks a bit 'alien' - please try to make it look Linuxish, if i apply this we'll probably stick with it forever. This is the major reason i havent

Re: [PATCH] lock stat for -rt 2.6.20-rc2-rt2 [was Re: 2.6.19-rt14 slowdown compared to 2.6.19]

2006-12-30 Thread hui
On Sat, Dec 30, 2006 at 06:56:08AM -0800, Daniel Walker wrote: On Sat, 2006-12-30 at 12:19 +0100, Ingo Molnar wrote: - Documentation/CodingStyle compliance - the code is not ugly per se but still looks a bit 'alien' - please try to make it look Linuxish, if i apply this we'll

[PATCH] lock stat for -rt 2.6.20-rc2-rt2 [was Re: 2.6.19-rt14 slowdown compared to 2.6.19]

2006-12-29 Thread hui
On Tue, Dec 26, 2006 at 04:51:21PM -0800, Chen, Tim C wrote: > Ingo Molnar wrote: > > If you'd like to profile this yourself then the lowest-cost way of > > profiling lock contention on -rt is to use the yum kernel and run the > > attached trace-it-lock-prof.c code on the box while your workload

[PATCH] lock stat for -rt 2.6.20-rc2-rt2 [was Re: 2.6.19-rt14 slowdown compared to 2.6.19]

2006-12-29 Thread hui
On Tue, Dec 26, 2006 at 04:51:21PM -0800, Chen, Tim C wrote: Ingo Molnar wrote: If you'd like to profile this yourself then the lowest-cost way of profiling lock contention on -rt is to use the yum kernel and run the attached trace-it-lock-prof.c code on the box while your workload is in