more lost dotdot caching pessimizes nfs especially
bde at zeta.org.au
Tue Jan 23 13:59:46 UTC 2007
On Tue, 23 Jan 2007, Kostik Belousov wrote:
> On Wed, Jan 24, 2007 at 12:18:38AM +1100, Bruce Evans wrote:
>> I suspect that recent locking fixes near dotdot are responsible for
>> slowing down builds over nfs even further by increasing the number
>> of RPCs. Times and RPC counts for building a RELENG_4 kernel under
>> -current on a Turion X2 2GHz:
Nevermind, it was an editing error that lost all the non-hack part of
my RPC reductions. This lost about half of them.
> could you confirm that reversal of rev. 1.97 of vfs_lookup.c would restore
> the old Lookup/Access RPC statistic ?
Thanks for the quick reply. I tried that first. It had no effect.
While you are here I'll ask for a non-hack to restore caching of dotdot :-).
(I just back out rev.1.103 of vfs_cache.c).
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