network performance

[Stefan Lambrev]

Greetings,

Kris Kennaway wrote:
> Stefan Lambrev wrote:
>> Greetings,
>>
>> Kris Kennaway wrote:
>>> Yes, it is gone with 8.0.  Disable the module builds because some of 
>>> them like this one probably need compile fixes.  If you need a 
>>> subset of modules use MODULES_OVERRIDE=list (in /etc/make.conf)
>>>
>> Yes, kernel builds.
>> I'm still playing with it, but the first results shows that new 
>> kernel can handle 800k incoming packets (well may be more but I have 
>> not enough power right now to generate more packets).
>> It still answer only to 250K-260K. I guess I'm hitting the limitation 
>> of syncache/syncookies ?
>
> Yes, it could be.  You may need to tune the net.inet.tcp.syncache 
> parameters to get better performance.  That is good news though.
>
>> Anyway this netisr2 looks like huge improvement :)
>
> Actually I forgot to mention: you probably want to set net.isr2.direct=1.
net.isr2.direct=1 have very bad impact over performance.
When I set it to 1 the server cannot handle more then 230kpps which is 
worse then vanilla 7.0 :)
Do you want to see lock profiling and hwpmc output when enabled?

Btw from where I can check if malloc() debugging is enabled, as I want 
to be sure that no debugging is slowing down the tests?
Does `ln -s aj /etc/malloc.conf` disable malloc() dubug?

-- 

Best Wishes,
Stefan Lambrev
ICQ# 24134177