Re: ksoftirqd uses 99% CPU triggered by network traffic (maybe RLT-8139 related)

[Hector Martin <hector@marcansoft.com>]

Hector Martin escribió:

> Pasi Sjoholm wrote:
>
>> Ok, now I have tested it for 6 hours without crashing the driver. The 
>> system's load has been something like 5-6 the whole time. I also made 
>> some network load with ~90Mbps-incoming and ~90Mbps-outgoing traffic.
>> I haven't had time to test anything else but I'm quite sure that 
>> there is no need for that anymore because the stability we have reached.
>> I'll let you know if there's any problems within next few days but I 
>> would recommend that those patches would be included in 2.6.8. 
>> (without that "if (received > 0) {").
>>
>> Many thanks for your help to resolve this problem.
>> Hector, have you tested these patches?
>>
>>  
>>
> Wow.. I gotta learn some more about kernel hacking someday.. lol
>
> I applied both (new) -10 and -20 patches and removed the test.
>
> I doubled the debug-messages that get sent to the PC (the UDP traffic) 
> but it froze (the sender) and stopped sending them after 5 minutes. I 
> guess that's because of the crappy TCP/IP stack on the other side 
> (this is a PlayStation2 application i'm developing, and the homebrew 
> PS2 TCP/IP stack doesn't have a good reputation.) I'm back to normal 
> debugging, I'll test it for a couple of hours. So far, no problem.
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>
Ugh.. it stopped sending them again. Now I doubled them again and I'm 
using a stabler TCP/IP stack. This one works OK. No problem so far... 
anyway, even though it stopped and I had to restart the PS2 some times, 
the PC has been receiving packets with no reboot whatsoever. I think 
it's fixed :)

Now I have to tackle a completely different problem with TCP connections 
on linux, but that's another story :)