Messages in this thread |  | | Date | Tue, 25 Sep 2001 20:49:29 +0200 | From | Andrea Arcangeli <> | Subject | Re: 2.4.10aa1 (00_vm-tweaks-1) |
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On Mon, Sep 24, 2001 at 03:42:59PM +0200, Adrian Bunk wrote: > On Sun, 23 Sep 2001, Andrea Arcangeli wrote: > > > If you are interested about the VM behaviour under swap (and non) please > > test the 00_vm-tweaks-1 (can be applied to plain 2.4.10), here the swap > > behaviour seems improved with it. Thanks! > >... > > 2.4.10 seems to behave worse than kernels up to 2.4.9 and 2.4.9ac12 > (haven't tried above) with the following workload (everything is only a > subjective impression as a user; I don't look at how long the "rm" and the > "tar" take because that's not very important for me): > > FVWM with 6 open xterms is running > XMMS is running > > mv linux linux.old > nice rm -rf linux.old & > tar xzf linux-2.4.10.tar.gz & > lynx ftp://ftp.kernel.org/pub/linux/kernel/testing > > > up to 2.4.9 and 2.4.9ac12: > everything works fine > > 2.4.10: > interactive use of the machine is very bad, I can't type a command in > another xterm
yes, that's because you didn't applied vm-tweaks-1 yet and you didn't enough ram and you needed to swap.
> > 2.4.10 + 00_vm-tweaks-1: > interactive use of the machine works all right, but XMMS does sometimes > stutter
it didn't happen here but let's look into it.
> This is on a K6 with 300 Mhz. free in 2.4.10 + 00_vm-tweaks-1 gives the > following output: > > $ free > total used free shared buffers cached > Mem: 62252 60400 1852 0 2408 32792 > -/+ buffers/cache: 25200 37052 > Swap: 947824 10264 937560 > $ > > > My impression is that there's a problem when several processes do heavy > non-cachable disk IO.
I've a few ideas on what to change incrementally to vm-tweaks-1, but can you send me the `vmstat 1` output, plus also the /proc/meminfo output snapshotted at regular intervals while xmms is "stuttering" just to avoid looking at the wrong place? thanks,
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