| Date | Wed, 26 May 2004 00:55:06 -0700 | From | William Lee Irwin III <> | Subject | Re: why swap at all? |
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On Wed, May 26, 2004 at 12:31:16AM -0700, Buddy Lumpkin wrote: > This is a really good point. I think the bar should be set at max > performance for systems that never need to use the swap device. > If someone wants to tune swap performance to their hearts content, so be it. > But given cheap prices for memory, and the horrible best case performance > for swap, an increase in swap performance should never, ever come at the > expense of performance for a system that has been sized such that executable > address spaces, libraries and anonymous memory will fit easily within > physical ram. > This of course doesn't address the VM paging storms that happen due to large > amounts of file system writes. Once the pagecache fills up, dirty pages must > be evicted from the pagecache so that new pages can be added to the > pagecache.
If you've got a real performance issue, please describe it properly instead of asserting without evidence the existence of one.
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