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From: Mick <michaelkintzios@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Swap performance
Date: Thu, 26 May 2011 21:49:22 +0100
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References: <201105251621.00659.wonko@wonkology.org> <201105251849.30148.alan.mckinnon@gmail.com>
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On Wednesday 25 May 2011 17:49:29 Alan McKinnon wrote:
> Apparently, though unproven, at 16:20 on Wednesday 25 May 2011, Alex
> Schuster
>=20
> did opine thusly:
> > Oh, even weirder: The phone just rang, and five minutes later, swap has
> > gone to 860M. I was running rdiff-backup --list-increment-sizes, maybe
> > this uses much memory, and caches the stuff. Now the command has
> > finished, and paging has stopped. The rdiff-backup process itself does
> > not use much memory.
> >=20
> > BTW, does anyone else's kwin use 750M? That's pretty high, I think it
> > used to be more like 300M.
>=20
> I've been noticing this kind of thing too for a while now. In my case it's
> the nepomuk/akonadi/virtuoso stack doing it - it seems to trigger full
> scans at weird times and does other special things after a resume from
> suspend.
>=20
> Virtuoso can sometimes get as high as 800M RES memory in top. Which is all
> quite bizarre, I suspect a dodgy config on my part.
>=20
> As for kwin - what column are you reading the value from? Here kwin uses
> more like 60M
This is kwin usage from a 32bit Pentium 4 box with 3G of RAM:
VIRT SHR RES
143m 22m 29m
At this moment I am compiling chromium (which will take close to 2 hours) a=
nd=20
it's eaten up 1560K swap. Under normal usage the 3G or RAM is more than=20
adequate. Small amounts of swapping happen only when I emerge something la=
rge=20
(e.g. OOo) or when I fire up VirtualBox and have umpteen apps open, browser=
s=20
with dozens of tabs, etc.
PS. I have switched off desktop search and although I can see akonadi/nepo=
muk=20
there's no virtuoso, strigi or other such stuff showing up.
=2D-=20
Regards,
Mick
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