On Mon, Jan 23, 2012 at 3:13 PM, Roman Yeryomin <leroi.li...@gmail.com> wrote:
> On 23 January 2012 14:38, Helmut Schaa <helmut.sc...@googlemail.com> wrote:
>> On Mon, Jan 23, 2012 at 11:37 AM, Roman Yeryomin <leroi.li...@gmail.com> 
>> wrote:
>>> I will test more thoroughly but I noticed about 0.7 MB/s speed drop
>>> comparing with those spinlocks commented out.
>>
>> Hmm, ok, might as well just be a wifi interference/noise issue? Maybe just
>> try on eth only with iperf or something similar? With a dedicated peer and
>> a simple crossover cable maybe.
>
> I don't think it's interference/noise issue as I've tried several
> times with and without spinlocks before writing to the list.
> The interesting part was that on eth only (bridged or routed) the
> speed was the same (...I think so, I'm not sure now) with and without
> spinlocks - 11.2 MB/s.

Maybe because the CPU wasn't exhausted with "only" ethernet throughput
while adding bridge + wifi will bring the CPU further to its limits
and ksoftirqd
kicks in ...

And you really just removed the spin_lock in the housekeeping tasklet
and nothing else? So, you haven't reverted the whole patch, right?

> Well, ok, I'll retest everything again (a bit later) and let you know
> the results.

Ok, thanks.

Helmut
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