Re: lockmeter

2007-01-29 Thread hui
On Sun, Jan 28, 2007 at 09:27:45PM -0800, Bill Huey wrote: > On Sun, Jan 28, 2007 at 10:17:05PM +0100, Ingo Molnar wrote: > > btw., while my plan is to prototype your lock-stat patch in -rt > > initially, it should be doable to extend it to be usable with the > > upstream kernel as well. ... > Fa

Re: lockmeter

2007-01-28 Thread hui
On Sun, Jan 28, 2007 at 10:17:05PM +0100, Ingo Molnar wrote: > btw., while my plan is to prototype your lock-stat patch in -rt > initially, it should be doable to extend it to be usable with the > upstream kernel as well. > > We can gather lock contention events when there is spinlock debugging

Re: lockmeter

2007-01-28 Thread Martin J. Bligh
Arjan van de Ven wrote: On Sun, 2007-01-28 at 17:04 +, Christoph Hellwig wrote: On Sun, Jan 28, 2007 at 08:52:25AM -0800, Martin J. Bligh wrote: Mmm. not wholly convinced that's true. Whilst i don't have lockmeter stats to hand, the heavy time in __d_lookup seems to indicate we

Re: lockmeter

2007-01-28 Thread Arjan van de Ven
On Sun, 2007-01-28 at 17:04 +, Christoph Hellwig wrote: > On Sun, Jan 28, 2007 at 08:52:25AM -0800, Martin J. Bligh wrote: > > Mmm. not wholly convinced that's true. Whilst i don't have lockmeter > > stats to hand, the heavy time in __d_lookup seems to indicate we may

Re: lockmeter

2007-01-28 Thread Ingo Molnar
* Bill Huey <[EMAIL PROTECTED]> wrote: > My lock stat stuff shows dcache to a be a problem under -rt as well. > It is keyed off the same mechanism as lockdep. [...] btw., while my plan is to prototype your lock-stat patch in -rt initially, it should be doable to extend it to be usable with the

Re: lockmeter

2007-01-28 Thread Ingo Molnar
* Bill Huey <[EMAIL PROTECTED]> wrote: > > ISTR we still thought dcache scalability was a significant problem > > last time anyone looked at it seriously - just never got fixed. > > Dipankar? > > My lock stat stuff shows dcache to a be a problem under -rt as well. > [...] yeah, it shows up f

Re: lockmeter

2007-01-28 Thread hui
On Sun, Jan 28, 2007 at 09:38:16AM -0800, Martin J. Bligh wrote: > Christoph Hellwig wrote: > >On Sun, Jan 28, 2007 at 08:52:25AM -0800, Martin J. Bligh wrote: > >>Mmm. not wholly convinced that's true. Whilst i don't have lockmeter > >>stats to hand, the heavy

Re: lockmeter

2007-01-28 Thread Martin J. Bligh
Christoph Hellwig wrote: On Sun, Jan 28, 2007 at 08:52:25AM -0800, Martin J. Bligh wrote: Mmm. not wholly convinced that's true. Whilst i don't have lockmeter stats to hand, the heavy time in __d_lookup seems to indicate we may still have a problem to me. I guess we could move the spi

lockmeter

2007-01-28 Thread Christoph Hellwig
On Sun, Jan 28, 2007 at 08:52:25AM -0800, Martin J. Bligh wrote: > Mmm. not wholly convinced that's true. Whilst i don't have lockmeter > stats to hand, the heavy time in __d_lookup seems to indicate we may > still have a problem to me. I guess we could move the spinlocks out

Re: lockmeter: fix lock counter roll over issue

2005-08-18 Thread Xuekun Hu
> Andrew is not so much interested in these changes as the lockmeter patch is > not in -mm. > -- > Ray Bryant > AMD Performance Labs Austin, Tx > 512-602-0038 (o) 512-507-7807 (c) > > - To unsubscribe from this list: send the line "uns

Re: lockmeter: fix lock counter roll over issue

2005-08-15 Thread Ray Bryant
ddress change: my current email address is [EMAIL PROTECTED] Andrew is not so much interested in these changes as the lockmeter patch is not in -mm. -- Ray Bryant AMD Performance Labs Austin, Tx 512-602-0038 (o) 512-507-7807 (c) - To unsubscribe from this list

Re: lockmeter: fix lock counter roll over issue

2005-08-15 Thread Xuekun Hu
Does anyone have inputs? On 8/14/05, Xuekun Hu <[EMAIL PROTECTED]> wrote: > When I collected lockmeter data for a longer duration, sometimes the > locks counter could roll over. I'm sure someone else maybe meet the > same situation. So I wrote the below patch, could you ha

lockmeter: fix lock counter roll over issue

2005-08-13 Thread Xuekun Hu
When I collected lockmeter data for a longer duration, sometimes the locks counter could roll over. I'm sure someone else maybe meet the same situation. So I wrote the below patch, could you have a look? diff -Nraup linux/include/linux/lockmeter.h linux.lockmeter/include/linux/lockme