Re: [Lse-tech] Re: 10.31 second kernel compile

Dipankar Sarma
2002-03-14T13:13:42Z

On Thu, Mar 14, 2002 at 10:27:26PM +1100, Anton Blanchard wrote:
>
> > > 554 .d_lookup
> >
> > Did you try the dcache patches?
>
> Not for this, I did do some benchmarking of the RCU dcache patches a
> while ago which I should post.

Please do ;-) This shows why we need to ease the pressure on dcache_lock.

>
> > Can you publish lockmeter stats?
>
> I didnt get a chance to run lockmeter, I tend to use the kernel profiler
> and use a hacked readprofile (originally from tridge) that displays
> profile hits vs assembly instruction. Thats usually good enough to work
> out which spinlocks are a problem.

Is this a PPC only hack ? Also, where can I get it ?

Thanks
--
Dipankar Sarma <dipankar@in.ibm.com> http://lse.sourceforge.net
Linux Technology Center, IBM Software Lab, Bangalore, India.