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ValveSoftware / Dota-2

Tracker for issues specific to Linux and Mac in the Reborn client. If you have a general issue or non-system-specific feature request please go to dev.dota2.com
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Linux: High ksoftirqd #7

Closed xfalcox closed 9 years ago

xfalcox commented 9 years ago

After launching the client the game runs really fine, but I'm getting a relatively high load on ksoftirqd for each core on my machine:

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND                              
 7595 falco     20   0 4843460 2,125g 303332 S 129,7 13,6  34:55.64 dota2                                
    3 root      20   0       0      0      0 R  17,6  0,0   7:56.04 ksoftirqd/0                          
   15 root      20   0       0      0      0 S  17,3  0,0   8:00.68 ksoftirqd/1                          
   22 root      20   0       0      0      0 S  17,3  0,0   8:03.13 ksoftirqd/2                          
   29 root      20   0       0      0      0 S  16,6  0,0   8:07.24 ksoftirqd/3                          
  821 root      20   0  230216 107904  60756 R   6,7  0,7   6:05.25 Xorg

Is this expected?

gdrewb-valve commented 9 years ago

source2 isn't doing anything directly that would cause this, but it could be stressing your system. Were you running a network match? Various web pages mention that high network traffic could cause it.

computerquip commented 9 years ago

This isn't an issue with DotA 2. If anything, it would be a driver issue. However, I think this is within normal bounds.

EDIT: If you're using the open-driver, I'd make a bug report there to see if they're interested.

kevin-abiera commented 9 years ago

This also happens to my Arch+NVIDIA(proprietary)

  PID USER      PR  NI    VIRT    RES  %CPU %MEM     TIME+ S COMMAND                                   
 1624 lightni+   6   0 4015.9m 1.768g 171.5 22.7  36:58.30 R dota2                                     
   19 root       2   0    0.0m   0.0m  14.6  0.0   2:06.03 S ksoftirqd/2                               
    3 root       1   0    0.0m   0.0m  13.9  0.0   2:05.97 S ksoftirqd/0                               
   14 root       1   0    0.0m   0.0m  13.9  0.0   2:05.93 S ksoftirqd/1                               
   24 root       4   0    0.0m   0.0m  13.9  0.0   2:05.92 S ksoftirqd/3                               
  977 lightni+   1 -11  549.5m  12.3m   1.3  0.2   0:07.89 S pulseaudio                                
  925 root       1   0  189.3m  68.9m   0.7  0.9   0:43.78 S Xorg

The gameplay is fine but the audio is stuttering uniformly from the dashboard to the game. EDIT: I don't think there is much network activity since I'm playing with bots. My wild guess: http://www.alexonlinux.com/smp-affinity-and-proper-interrupt-handling-in-linux

xfalcox commented 9 years ago

This happens just after opening the game and stays till closing, through UI, bot games offline, custom games online etc. Tried nvidia closed 340.x and 352.x and it's the same thing. I'm on latest kubuntu, ssd only setup, 16gb ram and i5 processor so my system isn't stressed at all.

On dota 2 source 1 this doesn't happen.

presianbg commented 9 years ago

Hi. Why It's closed ?

xfalcox commented 9 years ago

@presianbg It isn't closed, as you can see in the top of the page. Only the referenced issue #42 was closed because was a duplicate of this one.

gdrewb-valve commented 9 years ago

Does the 6/24 update make a difference?

xfalcox commented 9 years ago

@gdrewb-valve Yeah! Thanks a lot!

imirkin commented 9 years ago

Confirming that the super-high interrupt rate is gone, ksoftirqd is silent, and the game usage seems reasonable.

gdrewb-valve commented 9 years ago

Thanks, closing.

kevin-abiera commented 9 years ago

I can also confirm that this is fixed and dota2 binary does not go over 150 now but I still have audio stuttering. Should I open a new issue?

computerquip commented 9 years ago

lightning18, yes.