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#51 2011-02-21 22:25:26

Ultraman
Member
Registered: 2009-12-24
Posts: 242

Re: High load averages and interrupts with 2.6.36/2.6.37

Meh, I had to know before going to sleep.

Booting from battery is still affected. One core gets bombarded with activity up to 60% usage.
When I plug in the AC, it disappears.
Pulling AC out again, it stays away.

So this only happens when booting from battery.
Any ideas on how I can check what is going on? Track/trace it?

PITA, because this is a thin-and-light which I mostly use on battery during the day, because 50% of the lecture rooms do not provide power and I dont like to have my adapter using space on my already cramped workspace in class... grr. This used to work perfectly fine. sad

Last edited by Ultraman (2011-02-21 22:28:12)

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#52 2011-02-28 13:29:19

Telkkar
Member
From: United States
Registered: 2010-12-26
Posts: 38

Re: High load averages and interrupts with 2.6.36/2.6.37

Still having problems here.

How do we track down what is causing this?

EDIT: Wow, reminder to self, don't post immediately after you wake up -- your grammar hasn't kicked in yet Telk.

Last edited by Telkkar (2011-02-28 13:30:59)

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#53 2011-03-02 19:22:19

kokoko3k
Member
Registered: 2008-11-14
Posts: 2,390

Re: High load averages and interrupts with 2.6.36/2.6.37

Telkkar: 10.. 12 wakeups are a very low value, are you still on this?
Ultraman: did you tried to kill processes one by one to see if wake ups goes down like telkkar did?


Help me to improve ssh-rdp !
Retroarch User? Try my koko-aio shader !

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#54 2011-03-02 23:42:42

Telkkar
Member
From: United States
Registered: 2010-12-26
Posts: 38

Re: High load averages and interrupts with 2.6.36/2.6.37

kokoko3k wrote:

Telkkar: 10.. 12 wakeups are a very low value, are you still on this?
Ultraman: did you tried to kill processes one by one to see if wake ups goes down like telkkar did?

Sitting in console from boot -- No X, stopped daemons in rc.conf -- sitting at around 20-25.

It's not as much as everyone else has, but it still sucks to see when a couple kernels ago it was nonexistent.

Hard to kill anything from a fresh boot to console ^_^. I'll try unloading modules later.

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#55 2011-03-03 07:24:40

kokoko3k
Member
Registered: 2008-11-14
Posts: 2,390

Re: High load averages and interrupts with 2.6.36/2.6.37

I know, i was talking to ultraman about that.
Still, if you have 10..12 wapeups per sec, it is a fair normal value;


Help me to improve ssh-rdp !
Retroarch User? Try my koko-aio shader !

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#56 2011-03-07 04:01:00

joven
Member
Registered: 2010-03-27
Posts: 19

Re: High load averages and interrupts with 2.6.36/2.6.37

Wanted to chime in with my own experience with this issue. I've had the load problems off and on for months. Whats really weird though is it would be really bad for a while and then disappear. I hadn't seen it in months and all of sudden bam tonight it took my whole machine down. Was impossible to do anything in X and kworker processes had the CPU pegged at a constant 80 to 90%. I upgraded kernels to 2.6.37-2. I downgraded kernels to 2.6.35. Nothing worked! Until I took a can of air and blew out the vents on the side (its a thinkpad T400). Immediately, the problem went away completely. I restored my system to 2.6.37-2 and everthing is fine. I had read somewhere that the issue could be overheating and I'm pretty convinced this is the case. Something in the kernel gets pissed off when the airflow isn't perfect.

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#57 2011-03-09 19:22:01

tjbp
Member
Registered: 2010-11-06
Posts: 43

Re: High load averages and interrupts with 2.6.36/2.6.37

My cores are running at around 35 degrees Celsius consistently - I don't think that's what's causing the error for me.

How is everyone else doing with the bug? I booted up without the nohz=off option today and found that my load averages are normal again. However powertop tells me:

  21.9% ( 50.7)   [kernel scheduler] Load balancing tick
  20.1% ( 46.3)   kworker/0:0

I'm unfamiliar with wake-ups, but when I'm running Chromium and Spotify they each produce ~300; a total of ~800 for the system. After being left idle for a few seconds the whole system hangs - literally everything freezes until I move the mouse of press a key. All programs then simply resume where they left off. Are these the same symptoms others have?

Edit: No difference with 2.6.37.3-1

Last edited by tjbp (2011-03-10 13:16:46)

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