Paul Krizak ha scritto:
> Interesting...here at AMD we're using NetApp filers (dual Gbit attached)
> and we're finding that in RHEL 5.1 we get great streaming NFS
> performance (i.e. "big files") but abysmal small file performance (files
> smaller than 1KiB or so).

upgrading from version 4 to 5.1 we had a nightmare related to this
increbible problems.

Incredible because you can see via the nfsstat command that the new and
*currently distributed* kernels flood the filer with a great amount of
lookup calls.
This not only slowed down the new web servers, but actually made a "DOS
attack" on the Netapp, so i think it's incredible Red Hat continues
distrubuting these kernels as official ones.

You must downgrade the kernel to the versions released before the bug or
get a new one from http://people.redhat.com/dzickus/el5/

--
Alessandro Tinivelli

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