Re: Tuning Linux NFSv4 for high latency connections?

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Cedric Blancher [cedric.blancher@xxxxxxxxx] wrote:
> Are there any options to improve the Linux NFSv4 performance over a
> high latency connection?
> 
> We currently use Solaris/Illumos as NFSv4 server and client over a
> cross continental Internet connection. Latency is terrible (~220ms)
> but the counter this by running work in parallel so the latency is
> mostly mitigated.
> 
> We now wish to migrate (short: Away from Oracle because support is
> basically unbearable) to Linux (tested SuSE 13.1 and current Fedora)
> and build times are 17 times (!!!) SLOWER than on Solaris/Illumos.
> 
> Are there any tunables besides actimeo=300?

rsize and wsize may help! You need to figure out if the read is the
issue or the write before you dig further.

Regards, Malahal.

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