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Gordon Henderson wrote: > > A modern Linux kernel runs perfectly well without swap. Paul didn't say it wouldn't. > Executables are > demand-paged in directly from their disk image, as required. All my PBXs > run without swap as it's simply not needed. > > If you're into tuning and want ultimate speed, then making sure the > system never swaps is a good first move! If you want ultimate speed you want as much memory available, which usually means paging out unused memory from processes. Which means you want a small amount of swap depending how inefficiently the tasks running use memory. For a PABX if you can guarantee memory usage will never exceed memory available in normal usage, and it never does much disk I/O, then having no swap will probably make no difference. For my desktop, I see swap usage at 10% of RAM, so that is a fair chunk of dross paged to disk. -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html