Messages in this thread | | | From | (Linus Torvalds) | Subject | Re: pre5 VM feedback.. | Date | 15 Jan 2001 18:48:32 -0800 |
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In article <3A63A9AE.345CBAF3@mandrakesoft.com>, Jeff Garzik <jgarzik@mandrakesoft.com> wrote: >$!@#@! pre6 is already out :)
Yes, and for heavens sake don't use it, because the reiserfs merge got some dirty inode logic wrong. pre7 fixes just that one line and should be ok again.
>Anyway, this may be a totally subjective (and incorrect) perception, but >it seems to me like the recent 2.4.x-test kernels and thereafter start >swapping things out really quickly. Case in point: "diff -urN >linux.vanilla linux" command swaps out Konqueror and Netscape Mail, even >though I was using them only a few minutes ago.
Yes. It's really nice for some stuff, but a bit too aggressive for normal use, I think.
If you want to play with tuning, I'd suggest something like
- make SWAP_SHIFT bigger (try with 7 instead of 5)
- do the "self-swap-out" only for __GFP_VM allocations, and add the __GFP_VM flag to all page fault allocations (ie __GPF_VM would be a flag that says "this allocation will grow my RSS").
The latter is kind of debatable - some allocations can't easily be put in one category or the other (ie page cache growing - do we do it because of the page cache or because we want to map the page?)
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