Messages in this thread | | | Date | Sat, 24 Oct 1998 21:06:42 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [patch] my latest oom stuff |
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On Sat, 24 Oct 1998, Billy Harvey wrote: > > Linus, FWIW in a non-measured case, I've noticed the kswapd > occassionally take 90% CPU (with top) if I run without any swap (144M > RAM), but if I add 128M swap, I never see it. In fact, with the swap > active, it hardly ever gets used, but seems to really affect the system > with none available.
Yes.
The thing is, that without any swap-space at all you really cut down on the options the system has. It's not that the kernel _has_ to have swap-space, but without any swap-space it ends up doing essentially the same work it does when it _has_ swap-space, but now 90% of it ends up being wasted.
Another way of saying this it that the remaining 10% of it has to work ten times as hard to get the same results.
Linus
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