RE: [Xen-devel] lock contention measuring code?

[Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>]

> I don't remember such a patch.

Hmmm... maybe it was a patch in xenlinux?

> probably wouldn't be hard to knock something up?

Maybe if I were an x86 assembly guru ;-)

> Depending on what stats you want

Maybe incrementing a (64-bit) counter, some debug
key to print out all counters, and some way to
register a lock to put it in the debug-key list?
Maybe enable this code by default whenever debug
is enabled (but it might be useful data in the
wild too).

> -----Original Message-----
> From: Keir Fraser [mailto:keir.fraser@xxxxxxxxxxxxx]
> Sent: Tuesday, April 07, 2009 11:11 AM
> To: Dan Magenheimer; Xen-Devel (E-mail)
> Subject: Re: [Xen-devel] lock contention measuring code?
> 
> 
> I don't remember such a patch. Depending on what stats you 
> want, it probably
> wouldn't be hard to knock something up?
> 
>  -- Keir
> 
> On 07/04/2009 16:56, "Dan Magenheimer" 
> <dan.magenheimer@xxxxxxxxxx> wrote:
> 
> > Do I remember that there was a patch for the spinlock
> > code to allow measuring lock contention?  Maybe from
> > Jan?  If so, where might I find it?
> > 
> > Thanks,
> > Dan
> > 
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-devel
> 
> 
>

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel