Re: 2.5.38-mm3

Dipankar Sarma (dipankar@in.ibm.com)
Thu, 26 Sep 2002 18:35:58 +0530

On Thu, Sep 26, 2002 at 05:42:44AM -0700, William Lee Irwin III wrote:
> This is only aggravated by cacheline bouncing on SMP. The reductions
> of system cpu time will doubtless be beneficial for all.

On SMP, I would have thought that only sharing the fd table
while cloning tasks (CLONE_FILES) affects performance by bouncing the rwlock
cache line. Are there a lot of common workloads where this happens ?

Anyway the files_struct_rcu patch for 2.5.38 is up at
http://sourceforge.net/project/showfiles.php?group_id=8875&release_id=112473

Thanks

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