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SubjectRe: Why is NFS in 2.0.3? slow
   Date: Mon, 23 Mar 1998 21:24:25 -0500 (EST)
From: "Steven N. Hirsch" <shirsch@ibm.net>

I can get throughput in the neighborhood of 4MB/sec. between my
Alpha UDB and a P150+ over 100-Base ethernet. Both are running
2.1.90 kernels and fitted with Netgear FA310TX "tulip" network
adapters.

However, there is room for improvement. At work, I administer a
cluster of AlphaStation 600/333 boxes linked with 100Base, and have
measured almost 10MB/sec. copying large files between them!
Granted, we're talking expensive machines, Digital Unix 4.0 and
NFS-v3 but, hey, it's something to shoot for <g>.

Some of this gap could be closed on the Alpha if Linus would unroll
the inner loop of his Alpha IP checksum code a little bit more ;-)))

Actually, Richard Henderson and myself were tinkering at one point
with ideas to really make the Alpha IP checksum code scream....

Later,
David S. Miller
davem@dm.cobaltmicro.com

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