Messages in this thread | | | Date | Wed, 15 Oct 2003 06:06:14 -0700 | From | William Lee Irwin III <> | Subject | Re: Unbloating the kernel, was: :mem=16MB laptop testing |
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On Tue, 2003-10-14 18:33:49 +0100, John Bradford <john@grabjohn.com> > wrote in message <200310141733.h9EHXnYg002262@81-2-122-30.bradfords.org.uk>: >> No, 2.6 should run on a 4MB 386 with no significant performance >> penalty against 2.0, in my opinion.
On Wed, Oct 15, 2003 at 02:43:14PM +0200, Jan-Benedict Glaw wrote: > Achtually, with HZ at around 100 (or oven 70..80), an old i386 or i486 > will *start* just fine, at least at 8MB. However, over some days / > weeks, the machine gets slower and slower (my testdrive: my 90MHz > P-Classic with 16MB). Even with that "much" RAM, I get hit by whatever > slows down the machine. I *think* that it's the MM subsystem, but I'm > really not skilled enough with it to blame it:)
Well, unless it's an interrupts-safe critical section that's hurting, you could take profiles, provided you have enough RAM for the profile buffer (which appears to be large). You could easily do a quick hack to steal the profile buffer from e820 regions not otherwise used for RAM (i.e. unused because you did mem=) to handle that for a slow cpu with more RAM than 8MB.
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