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Peter Humphrey posted <42CEA2DC.70205@××××××××××.uk>, excerpted below, on |
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Fri, 08 Jul 2005 16:59:24 +0100: |
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> I'll try it soon with parallel instances to see if that will flush out |
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> some swap (while running in serial the disk activity is in flushing and |
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> re-reading file buffers) |
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Note that there's a kernel command line parameter, something like mem=512M |
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or some such (from memory), that will manually tell the kernel how much |
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physical memory to use. It was designed for systems that had more memory |
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than the kernel could detect, some years ago, but it also works well for |
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telling the kernel to use less memory than you actually have, if you want |
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to do some experimentation or something, perfect for forcing more swapping |
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activity than you'd normally get (zero swapping <g>), or for watching the |
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kernel OOM (out of memory) killer in action, if you don't have enough |
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memory including swap. |
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I'd know how to add it to my LILO kernel command line, but couldn't tell |
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you how to add it to GRUB, tho it shouldn't be difficult. |
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-- |
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Duncan - List replies preferred. No HTML msgs. |
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"Every nonfree program has a lord, a master -- |
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and if you use the program, he is your master." Richard Stallman in |
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http://www.linuxdevcenter.com/pub/a/linux/2004/12/22/rms_interview.html |
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-- |
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