Throughput problems with NFS

Kip Macy kmacy at
Sun Oct 12 17:59:47 PDT 2003

> An example from my understanding is that we do a ton of fsync's on
> a 3MB file because of NFS_FABLKSIZE being such a low number.
> As for an actual performance speed up, I haven't seen one from my
> testing while bumping up this number. I also appear to be hitting
> some other network contention points that are limiting my throughput
> to around 50MB/s on GigE.

Have you tried turning profiling with the kernel under load?


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