--On Friday, July 12, 2002 10:29:53 -0400 Alexander Viro <viro@math.psu.edu> wrote:
>
>
> On Fri, 12 Jul 2002, Maneesh Soni wrote:
>
>> Here is the dcache scalability patch (cleaned up) as disscussed in
>> the previous post to lkml by Dipankar. The patch uses RCU for doing fast
>> dcache lookup. It also does lazy updates to lru list of dentries to
>> avoid doing write operations while doing lookup.
>
> Where is
> * version for 2.5.<current>
> * analysis of benefits in real-world situations for 2.5 version?
>
> Patch adds complexity and unless you can show that it gives significant
> benefits outside of pathological situations, it's not going in.
Here are the slides where I presented, among other things, some
performance results of fastwalk compared to using rcu with lazy
updating of the d_lru list. The results are similar to what Dipankar
just published but there are a few more data points.
Thanks.
Hanna
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