Re: kernel nfs code: decreasing speed since 2.1.131ac5

Alan Cox (alan@lxorguk.ukuu.org.uk)
Wed, 30 Dec 1998 11:33:42 +0000 (GMT)

> Alan has said that the new nfs code sits on the buffer cache. Could the recent
> tunings of this have changed things? It's possible that the nfs code hasn't
> changed significantly enough to do this (unless someone has plugged in broken
> readahead support?).

It might be the page ahead, but I don't see why

> (check out how the per-char sequential output and random seek values fall
> here - compared to 2.1.131ac5 WITHOUT the readahead patch. Block throughput
> is close to the old user-level nfs patch)

Is your client revision stable across this test set - the NFS client has
changed by version too ?

Alan

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