On Tue, Jun 22, 2010 at 6:40 PM, Ross Walker wrote:
> On Jun 22, 2010, at 11:44 AM, Alex Still wrote:
>
>> [...]
>>
>>>> On some servers this behavior returned despite rsize being set to 32k,
>>>> I had to set it to 8k to get reasonnable throughput.
On Tue, Jun 22, 2010 at 6:16 PM, JohnS wrote:
>
> On Tue, 2010-06-22 at 17:44 +0200, Alex Still wrote:
>
>>
>> Clients are blade servers. The blade chassis have integrated cisco
>> switches, which are plugged to a cisco 6509. The NFS server is on
>> another site
[...]
>> On some servers this behavior returned despite rsize being set to 32k,
>> I had to set it to 8k to get reasonnable throughput. So there's
>> definitly something fishy going on. This has been reported on over 20
>> machines, so I don't think it's faulty hardware we're seeing.
>>
>> Any tho
[..]
>> /proc/mounts shows rsize has been negotiated to 1mB
>
> Have you tested the same thing with a Linux NFS server?
>
> The CentOS 5.x kernel has a maximum server [rw]size of 32Kb, so you
> would need to use something with a more recent kernel to get [rw]sizes
> to be 1Mb.
>
Haven't tried wit
On Mon, Jun 21, 2010 at 4:38 PM, Nataraj wrote:
[...]
> Well, it's been a long time since I've done troubleshooting on large NFS
> networks, but here's an idea...
>
> Are you seeing any kind of packet loss/retransmissions? Take a look at
> netstat -s. When I last did this work it was with NFS
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