Messages in this thread | | | Date | Tue, 8 Jun 1999 20:26:00 +0200 | From | Thierry Danis <> | Subject | Still slow NFS reading versus 2.2.9 |
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Hello,
I have reported some trouble having concurrent 2.2.9 NFS client against a 2.2.9 knfsd 1.3 server.
I just tested with 2.2.9-ac4 and iozone. One iozone is correct (not amazing, but just correct) :
IOZONE performance measurements: 6260155 bytes/second for writing the file 4870301 bytes/second for reading the file
However, 2 iozones (from the same client for example) show bad behavior during rereading :
IOZONE performance measurements: 3203715 bytes/second for writing the file 604157 bytes/second for reading the file
Here : 3203715 * 2 ~= 6260155 (a little better), but : 604157 * 2 < 4870301 (which is really bad).
During the reading, the load of the server (which is doing nothing else than serving the 2 NFS clients) climbs up to 5 (or more), and is almost unresponsive.
With FreeBSD clients, the behavior is linear during reading, and the load of the server does not jump to sky.
If I can provide more information, tell me what to do.
A+, -- Thierry Danis Poste : 53 53 danis@spmo.sagem.fr
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