Messages in this thread | | | Date | Mon, 22 Oct 2001 14:39:40 -0400 | Subject | Re: Knob turning on mtest01 for 2.4.13-pre5aa1 | From | (bill davidsen) |
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In article <20011022141923.K26029@athlon.random> andrea@suse.de wrote:
>Cool. this just proofs the vm_mapped_ratio logic is not worthwhile (I >had similar results here so this just confirms). So I'm killing it >enterely (Linus was completly right that it wans't worthwhile). I'm also >changing a bit the semantics of vm_balance_ratio (similar to pre3aa1) >and I'm lowering it down due the slight change of semantics, plus I'm >including the PG_launder (that resembles the PG_wait_for_IO logic in >pre3aa1) and slightly modified BH_wait_IO logic from Linus. Hopefully >the end result will be positive. > >Thanks very much for this great feedback! :)
If you think that one test under one set of conditions proves that user tuning is worthless, then remove OOM, as I can prove there are cases where things work as well without it.
To be honest I don't think that running a single player process while running memory tests is representative of typical usage. Someone on a small memory machine with memory pressure spread over multiple processes would be better, and sudden program growth is also a reasonable thing to expect, such as opening large files in an editor, entering a busy newsgroup for the first time, opening a large image with gimp, etc. These loads are things which users commonly do, and tuning parameters for better responsiveness is certainly as valuable as running a test with a numeric output. Sluggish system is one thing I do notice with most Linux kernels on memory challenged machines.
I think it would be worth waiting for a bit of additional feedback on "feel" would be useful before adopting the Windows "system knows best" approach.
-- bill davidsen <davidsen@tmr.com> His first management concern is not solving the problem, but covering his ass. If he lived in the middle ages he'd wear his codpiece backward.
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