Messages in this thread | | | Date | Mon, 26 Jul 2004 13:29:46 -0700 | From | Joel Becker <> | Subject | Re: Autotune swappiness01 |
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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).
Joel
--
"Maybe the time has drawn the faces I recall. But things in this life change very slowly, If they ever change at all."
Joel Becker Senior Member of Technical Staff Oracle Corporation E-mail: joel.becker@oracle.com Phone: (650) 506-8127 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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