On Sat, 4 Oct 2008, Danny Braniss wrote:
at the moment, the best I can do is run it on a different hardware that has
if_em, the results are in
ftp://ftp.cs.huji.ac.il/users/danny/lock.prof/7.1-1000.em the
benchmark ran better with the Intel NIC, averaged UDP 54MB/s, TCP 53MB/s (I
get the same numbers with an older kernel).
Dear Danny:
Unfortunately, I was left slightly unclear on the comparison you are making
above. Could you confirm whether or not, with if_em, you see a performance
regression using UDP NFS between 7.0-RELEASE and the most recent 7.1-STABLE,
and if you do, whether or not the RLOCK->WLOCK change has any effect on
performance? It would be nice to know on the same hardware but at least with
different hardware we get a sense of whether or not this might affect other
systems or whether it's limited to a narrower set of configurations.
Thanks,
Robert N M Watson
Computer Laboratory
University of Cambridge
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