On 23 January 2012 16:26, Helmut Schaa <helmut.sc...@googlemail.com> wrote:
> 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 ...

I guess bridge is always there (with br-lan)?

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

Yes, I just commented out those two spinlock lines.

Regards,
Roman
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