NFS speed problem when appending data to existing files

From: Torsten Werner
Date: Wed Oct 08 2003 - 10:55:47 EST


Hello,

the following command

for i in `seq 1 10240`; do dd if=/dev/zero bs=100 count=1 2> /dev/null | tee -a tmp0; done

is very slow on a nfs mounted homedir and I get lots of error messages

nfs: server xxxxxx not responding, still trying
nfs: server xxxxxx OK

on the client side (2.4.22, server is a 2.4.21 kernel based nfsd). Only
appending small amounts of data to an existing file shows the problem.
Writing a large file happens at FastEthernet speed flawlessly. Any help,
please?

Thanks,
Torsten

--
Torsten Werner Dresden University of Technology
email@xxxxxxxxxxxx +49 351 46336711 / +49 162 3123004
http://www.twerner42.de/ telefax: +49 351 46336809

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