On Nov 18, 2012, at 10:34 PM, Simon Wilkinson
wrote:
>
> On 9 Oct 2012, at 10:24, Dan Van Der Ster wrote:
>> We currently run fileservers with udpsize=2MB, and at that size we have a 30
>> client limit in our test environment. With a buffer size=8MB (increased
>> kernel max with sysctl and fi
On 19 Nov 2012, at 07:15, Jakub Moscicki wrote:
> Thanks for this analysis. The increased UDP works pretty well for us at CERN
> so far - albeit one limit gone other limits appear more pronounced.
I'm interested in what other limits you are hitting. I'm very aware of the
problems with the liste
On 19 Nov 2012, at 08:13, Dan Van Der Ster wrote:
> So, the key sysctl to set to enable large receive buffers is
> net.core.rmem_max.
This should actually be the only thing that you need to change. The transmit
queue length shouldn't matter, as the kernel is _much_ more efficient at
putting U
