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VM and swap - it's really unusable

2.4.17/18pre Martin Knoblauch 2 participants 3 messages Jan 7, 2002

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Martin Knoblauch

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#0 lore raw
Quoted 14 lines

Re: [2.4.17/18pre] VM and swap - it's really unusable

I did some tests with different VM-patches. I tested one ac-patch, too. I detected the same as you described - but the memory-consumption and the behaviour at all isn't better. If you want to, you can test another patch, which worked best in my test. It's nearly as good as kernel 2.2.x. Ask M.H.vanLeeuwen ([email protected]) for his oom-patch to kernel 2.4.17.
But beware: maybe this strategy doesn't fit to your applications. And it's not for productive use.
I and some others surely too, would be interested in your experience with this patch.

Hi,

so I took the M.H.vL vmscan.c patch for 2.4.17 and it is a definite
winner for me. Sounds like 2.4.18 material.

Martin

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Martin Knoblauch         |    email:  [email protected]
TeraPort GmbH            |    Phone:  +49-89-510857-309
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#1 lore raw
Quoted 4 lines · On Mon, 07 Jan 2002 18:41:29 +0100 Martin Knoblauch…

Hi,

so I took the M.H.vL vmscan.c patch for 2.4.17 and it is a definite
winner for me. Sounds like 2.4.18 material.

What issues have been solved or remarkably become better for you with Martins patch?

Regards,
Stephan

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#2 lore raw
In reply to Martin Knoblauch
Quoted 6 lines · Stephan von Krawczynski
Quoted 2 lines · On Mon, 07 Jan 2002 18:41:29 +0100 Martin Knoblauch…

Hi,

Quoted 8 lines
Quoted 2 lines

so I took the M.H.vL vmscan.c patch for 2.4.17 and it is a definite
winner for me. Sounds like 2.4.18 material.

What issues have been solved or remarkably become better for you with Martins patch?

Regards,
Stephan

massive reduction of swapped out applications in the light of a 220+
MiB Cache. This on a 320 MiB System with about 2x swap. As a result, interactive behaviour (this is a notebook) is much better. Before the patch I had about 50-60 MB in swap for my workload (vmware + netscape + plus kernel compile + updatedb). Now it is below 5 MB, although this is still to much (yes, I know, I could turn off swap completely :-)

I also took the OOM-Killer patch, although it never was a real concern
for me.

Martin

Signature · 5 lines
------------------------------------------------------------------
Martin Knoblauch         |    email:  [email protected]
TeraPort GmbH            |    Phone:  +49-89-510857-309
C+ITS                    |    Fax:    +49-89-510857-111
http://www.teraport.de   |    Mobile: +49-170-4904759