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Subject: Re: Terrible NFS performance under 9.2-RELEASE?
From: aurfalien <aurfalien@gmail.com>
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Date: Mon, 10 Feb 2014 15:41:05 -0800
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To: Christian Weisgerber <naddy@mips.inka.de>
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Cc: freebsd-net@freebsd.org, Rick Macklem <rmacklem@uoguelph.ca>
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On Feb 10, 2014, at 3:30 PM, Christian Weisgerber <naddy@mips.inka.de> wrote:
> Rick Macklem:
> 
>>> When I switched my desktop box from FreeBSD 7 to 9, NFS read
>>> performance from my media server (running OpenBSD) became extremely
>>> poor.  I couldn't even stream a movie any longer.  Disabling TSO
>>> on the nfe(4) interface had no effect.  My workaround was to switch
>>> from a TCP mount to a UDP one.  The problem has persisted to FreeBSD
>>> 10.
>>> 
>>> I can now report that switching to [rw]size=32768 with a TCP mount
>>> also works fine.
>>> 
>> If it is convenient, trying a 64K TCP mount with a kernel that has the
>> attached patch (which makes it use page size clusters and reduces the
>> # of segments to 18) to see if it works well, would be interesting.
> 
> No, this works very poorly.

So basically either;

TCP w/32K r/w

or UDP

Correct?

- aurf

"Janitorial Services"