Re: [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28

Eric Dumazet
2008-11-17T22:39:11Z

Ingo Molnar a écrit :
> * Eric Dumazet <dada1-fPLkHRcR87vqlBn2x/YWAg@public.gmane.org> wrote:
>
>> Ingo Molnar a écrit :

>>> it's this division:
>>>
>>> if (doing_tso) {
>>> [...]
>>> xmit_size_goal -= (xmit_size_goal % mss_now);
>>>
>>> Has no-one hit this before? Perhaps this is why switching loopback
>>> networking to TSO had a performance impact for others?
>> Yes, I mentioned it later. [...]
>
> i see - i just caught up with some of my inbox from today.
>
>> [...] But apparently you dont read my mails, so I will just stop
>> now.
>
> Sorry, i spent my time looking at the profile output.
>

No problem Ingo, I am very glad you take so much time to profil kernel ;)

I had too many problems with profilers on my dev machine lately :(