Messages in this thread | | | From | "Miquel van Smoorenburg" <> | Subject | Re: Slow NFS performance over wireless! | Date | Thu, 15 Jan 2004 01:12:07 +0000 (UTC) |
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In article <1074026758.4524.65.camel@nidelv.trondhjem.org>, Trond Myklebust <trond.myklebust@fys.uio.no> wrote: >There are a couple of performance related patches that should be applied >to stock 2.6.0/2.6.1. One handles a problem with remove_suid() >generating a whole load of SETATTR calls if you are writing to a file >that has the "x" bit set. The other handles an efficiency issue related >to random write + read combinations. > >Either look for them on my website (under >http://www.fys.uio.no/~trondmy/src), or apply Andrew's 2.6.1-mm2 patch.
If one runs bonnie on a NFS mounted share, what should the rewrite throughput be?
On an NFS server locally (2.6.1-mm3) I get as write/rewrite/read speeds 107 / 25 / 110 MB/sec, CPU loads of a few percent.
On an NFS client (2.6.1-mm3, filesystem mounted with options udp,nfsvers=3,rsize=32768,wsize=32768) I get for the same share as write/rewrite/read speeds 36 / 4 / 38 MB/sec. CPU load is also very high on the client for the rewrite case (80%).
That's with back-to-back GigE, full duplex, MTU 9000, P IV 3.0 Ghz. (I tried MTU 5000 and 1500 as well, doesn't really matter).
Is that what would be expected ?
Mike.
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