Date: Mon, 08 Jul 2013 13:19:14 +1200 From: Berend de Boer <berend@pobox.com> To: Rick Macklem <rmacklem@uoguelph.ca> Cc: freebsd-fs <freebsd-fs@freebsd.org> Subject: Re: Terrible NFS4 performance: FreeBSD 9.1 + ZFS + AWS EC2 Message-ID: <87sizp26i5.wl%berend@pobox.com> In-Reply-To: <580122426.2916694.1373242759482.JavaMail.root@uoguelph.ca> References: <87y59i0yni.wl%berend@pobox.com> <580122426.2916694.1373242759482.JavaMail.root@uoguelph.ca>
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>>>>> "Rick" == Rick Macklem <rmacklem@uoguelph.ca> writes:
>> Repeating this with nfs4 + udp: doesn't work at all, get
>> input/output error after a few files.
>>
Rick> The RFCs for NFSv4 require use of transport protocols that
Rick> include congestion control --> no UDP support. What client
Rick> are you using?
Happened to be Ubuntu 10.04 LTS.
>>
Rick> Please try this patch:
Rick> http://people.freebsd.org/rmacklem/~drc4.patch - After you
Rick> apply the patch and boot the rebuilt kernel,
Ah kernel. The problem is I'm on Amazon, and I doubt I can rebuilt the
kernel that easily. The patches to make that work only recently
landed.
I'll need to ask Colin Percival how I can safely do that.
--
All the best,
Berend de Boer
------------------------------------------------------
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