Terrible NFS performance under 9.2-RELEASE?
aurfalien
aurfalien at gmail.com
Mon Feb 10 23:41:11 UTC 2014
On Feb 10, 2014, at 3:30 PM, Christian Weisgerber <naddy at 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"
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