Messages in this thread | | | Date | Mon, 26 Jul 2004 13:42:58 -0700 | From | Andrew Morton <> | Subject | Re: Autotune swappiness01 |
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Joel Becker <Joel.Becker@oracle.com> wrote: > > On Mon, Jul 26, 2004 at 10:43:01AM +1000, Con Kolivas wrote: > > Low memory boxes and ones that are heavily laden with applications find > > that ends up making things slow down trying to keep all applications in > > physical ram. > > Lowish memory boxes with plain desktop loads find that the default > of '60' is a terrible one (I'm speaking of 1GHz-ish machines with 256MB > (like mine) or 512MB (like a guy next to me)). Every person I know who > installs 2.6 complains about how it feels slow and choppy. I tell them > "The first thing I do after installing 2.6 is set swappiness to '20'." > Sure enough, they set swappiness to 20 and their box starts behaving > like a properly tuned one. > I don't know what workload the default of '60' is for, but for > the (128MB < x < 1GB) of RAM case, it sucks (and I've seen the same > behavior on a 300MHz 196MB box). >
Yes, I think 60% is about right for a 512-768M box. Too high for the smaller machines, too low for the larger ones.
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