Messages in this thread | | | Date | Mon, 18 Jun 2001 15:17:31 +0200 (CEST) | From | German Gomez Garcia <> | Subject | Re: Strange behaviour of swap under 2.4.5-ac15 |
| |
On Mon, 18 Jun 2001, Andrea Arcangeli wrote:
> On Mon, Jun 18, 2001 at 12:14:01PM +0200, German Gomez Garcia wrote: > > Hello, > > > > I've running 2.4.5-ac15 for almost a day (22 hours) and I found > > some strange behaviour of the kswap, at least it was not present in > > 2.4.5-ac9. The swap memory increase with time as the cache dedicated > > memory also increase, that is swapping process at a very fast rate, even > > when no program is getting more memory. Is that the expected behaviour? > > An example, with no process running (just the usual daemons and > > none of them getting extra memory) the command: > > > > free ; sleep 60; free > > > > total used free shared buffers cached > > Mem: 513416 393184 120232 364 63276 254576 > > -/+ buffers/cache: 75332 438084 > > Swap: 530104 14228 515876 > > > > total used free shared buffers cached > > Mem: 513416 393192 120224 364 63276 258412 > > -/+ buffers/cache: 71504 441912 > > Swap: 530104 18064 512040 > > > > Any idea? > > either apply this patch to 2.4.5ac15: > > ftp://ftp.us.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.4/2.4.5aa3/00_fix-unusable-vm-on-alpha-1 > > (note it is not an alpha specific bug, it's just that I was triggering > all the time on alpha so I called the patch that way)
It doesn't fix it, swapped memory and cache memory increase at a rate of about 40K/s, swapping process very fast, even the "agetty" processes get 64 out of 68 K swapped one or two minutes after booting. This rate gets lower as nothing but the essential (4K of "agetty", etc) is left in the physical memory.
> or better use 2.4.6pre3aa1: > > ftp://ftp.us.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.4/2.4.6pre3aa1.bz2
I'll test this later as I cannot reboot the machine right now. Just one question, is this kernel 'stable', I was running 2.4.5-ac9 for a week without problems, even when 'stress-testing' the emu10k1 and the mga modules.
Regards,
- german
PS: swapoff -a fixes the problem :-) ------------------------------------------------------------------------- German Gomez Garcia | "This isn't right. This isn't even wrong." <german@piraos.com> | -- Wolfgang Pauli
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |