> Hanna Linder wrote:
>>> Looks like fastwalk might not behave so well on this 32 cpu numa
> On Thu, Sep 19, 2002 at 04:38:14PM -0700, Andrew Morton wrote:
>> I've rather lost the plot. Have any of the dcache speedup patches been
>> merged into 2.5?
> As far as the dcache goes, I'll stick to observing and reporting. I'll
> rerun with dcache patches applied, though.
For a 32-way system fastwalk will perform badly from dcache_lock point of
view, basically due to increased lock hold time. dcache_rcu-12 should reduce
dcache_lock contention and hold time. The patch uses RCU infrastructer patch and
read_barrier_depends patch. The patches are available in Read-Copy-Update
section on lse site at
-- Maneesh Soni IBM Linux Technology Center, IBM India Software Lab, Bangalore. Phone: +91-80-5044999 email: firstname.lastname@example.org http://lse.sourceforge.net/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to email@example.com More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/