NFS performance ...

From: KELEMEN Peter (fuji@elte.hu)
Date: Fri Nov 22 2002 - 10:00:11 EST

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Hello,

I have a very simple NFS setup over a siwtched 100Mbit/s network.

client is Celeron 400MHz/256M RAM, using XFS
server is dual Pentium Pro 200MHz/1G RAM, using XFS
server is running Linux 2.4.19-pre8aa3.

Network bandwith can be utilized, because ICMP flooding the
server results in ~20000 kbit/s network traffic (as of
iptraf), but NFS (v3,udp) write performance is unacceptably
slow (around 300 KiB/sec), same results with the following
kernels:
Linux 2.4.18-WOLK3.1
Linux 2.4.18-wolk3.7.1
Linux 2.4.20-pre8aa2

However, with 2.4.19-rmap14b-xfs the very same NFS
performance tops out at 2.54 MiB/sec. What's the catch?

TIA,
Peter

-- 
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