Messages in this thread | | | From | Roger Larsson <> | Subject | Re: Benchmarking 2.2 and 2.4 using hdparm and dbench 1.1 | Date | Tue, 9 Jan 2001 22:36:21 +0100 |
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On Tuesday 09 January 2001 12:08, Anton Blanchard wrote: > > Where is the size defined, and is it easy to modify? > > Look in fs/buffer.c:buffer_init() > > > I noticed that /proc/sys/vm/freepages is not writable any more. Is there > > any reason for this? > > I am not sure why. >
It can probably be made writeable, within limits (caused by zones...)
But the interesting part is that 2.4 tries to estimate how much memory it will need shortly (inactive_target) and try to keep that amount inactive clean (inactive_clean) - clean inactive memory can be freed and reused very quickly.
cat /proc/meminfo
My feeling is that, for now, keeping it untuneable can help us in finding fixable cases...
/RogerL
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