Kris Kennaway wrote:
On Mon, May 08, 2006 at 06:18:18PM -0700, Maxim Sobolev wrote:
Kris Kennaway wrote:
On Mon, May 08, 2006 at 02:52:07AM -0400, Kris Kennaway wrote:
OK, David's patch fixes the umtx thundering herd (and seems to give a
4-6% boost). I also fixed a thundering herd in FILEDESC
Kris Kennaway wrote:
On Mon, May 08, 2006 at 02:52:07AM -0400, Kris Kennaway wrote:
OK, David's patch fixes the umtx thundering herd (and seems to give a
4-6% boost). I also fixed a thundering herd in FILEDESC_UNLOCK (which
was also waking up 2-7 CPUs at once about 30% of the time) by doing
s/w
On Mon, May 08, 2006 at 06:18:18PM -0700, Maxim Sobolev wrote:
> Kris Kennaway wrote:
> >On Mon, May 08, 2006 at 02:52:07AM -0400, Kris Kennaway wrote:
> >>OK, David's patch fixes the umtx thundering herd (and seems to give a
> >>4-6% boost). I also fixed a thundering herd in FILEDESC_UNLOCK (whic
On Mon, May 08, 2006 at 08:43:28PM -0400, Kris Kennaway wrote:
> On Mon, May 08, 2006 at 02:52:07AM -0400, Kris Kennaway wrote:
> > OK, David's patch fixes the umtx thundering herd (and seems to give a
> > 4-6% boost). I also fixed a thundering herd in FILEDESC_UNLOCK (which
> > was also waking up
On Mon, May 08, 2006 at 02:52:07AM -0400, Kris Kennaway wrote:
> OK, David's patch fixes the umtx thundering herd (and seems to give a
> 4-6% boost). I also fixed a thundering herd in FILEDESC_UNLOCK (which
> was also waking up 2-7 CPUs at once about 30% of the time) by doing
> s/wakeup/wakeup_one
On Tue, May 09, 2006 at 03:34:59AM +0300, Sven Petai wrote:
> > Hmm, with this patch mysql 4.1 seems to crash at startup. I haven't
> > yet had time to investigate. Is anyone else seeing this?
> >
>
> Seems to run fine here with 4.1.18 on amd64, but doesn't seem to make much
> difference though
> Hmm, with this patch mysql 4.1 seems to crash at startup. I haven't
> yet had time to investigate. Is anyone else seeing this?
>
Seems to run fine here with 4.1.18 on amd64, but doesn't seem to make much
difference though.
I ran the tests again on the 8 core machine with and without rwatsons
David Xu wrote:
On Tuesday 09 May 2006 02:43, Kris Kennaway wrote:
Hmm, with this patch mysql 4.1 seems to crash at startup. I haven't
yet had time to investigate. Is anyone else seeing this?
Kris
I only have tested mysql 4.0, I will try 4.1 later.
What about 5.0? Have any of
On Tuesday 09 May 2006 02:43, Kris Kennaway wrote:
> Hmm, with this patch mysql 4.1 seems to crash at startup. I haven't
> yet had time to investigate. Is anyone else seeing this?
>
> Kris
I only have tested mysql 4.0, I will try 4.1 later.
___
freebs
On Mon, May 08, 2006 at 06:43:31PM +0800, David Xu wrote:
> On Monday 08 May 2006 14:52, Kris Kennaway wrote:
> > OK, David's patch fixes the umtx thundering herd (and seems to give a
> > 4-6% boost). I also fixed a thundering herd in FILEDESC_UNLOCK (which
> > was also waking up 2-7 CPUs at once
On Monday 08 May 2006 14:52, Kris Kennaway wrote:
> OK, David's patch fixes the umtx thundering herd (and seems to give a
> 4-6% boost). I also fixed a thundering herd in FILEDESC_UNLOCK (which
> was also waking up 2-7 CPUs at once about 30% of the time) by doing
> s/wakeup/wakeup_one/. This did
On Mon, 8 May 2006, Kris Kennaway wrote:
unp contention has risen a bit. The other big gain is to sleep mtxpool
contention, which roughly doubled:
In the general case, you can increase the size of the mutex pool. However,
since this is per-uid for the socket buffer resource limits, that wo
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