Messages in this thread | | | Subject | Re: SMP Scheduling | Date | Sun, 08 Aug 1999 21:28:50 -0400 | From | Horst von Brand <> |
| |
Peter Waltenberg <peterw@dascom.com> said: [...]
> Under 2.0 if you ran a CPU hog it'd pretty well stick to one CPU.
How is that an improvement?
> I.e. if you had xosview running you'd see one CPU at 100%, the other mostly > idle. If there was a load burst, it might move to the other CPU, but that was > pretty unusual.
> Under 2.2 you see that one CPU hog hopping CPU's and at regular intervals. > Using xosview to track load what you see is a picket fence effect. > And there are more than "3 processes" running, more like 80 on my machine, > so running xosview alone shouldn't be enough to force this to happen and if > it were, the other processes should be introducing enough noise to make the > CPU swapping more erratic.
If you have that many processes running, your hog will have its state at the CPU flushed anyway, so the CPU selected is irrelevant.
> This does seem to be "wrong", not so much that the process is changing CPU's, > thats reasonable, but the fact that it's doing it with such regularity > now.
File it under "random trivia" then ;-) -- Horst von Brand vonbrand@sleipnir.valparaiso.cl Casilla 9G, Viña del Mar, Chile +56 32 672616
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |