VM in 2.4.7-pre hurts...

From: Jeff Garzik (jgarzik@mandrakesoft.com)
Date: Sat Jul 07 2001 - 08:41:01 EST

Oh this is a fun one :)

When building gcc-2.96 RPM using gcc-2.96 under kernel 2.4.7 on alpha,
the system goes --deeply-- into swap. Not pretty at all. The system
will be 200MB+ into swap, with 200MB+ in cache! I presume this affects
2.4.7-release also.

System has 256MB of swap, and 384MB of RAM.

Only patches applied are Rik's recent OOM killer friendliness patch, and
Andrea's ksoftirq patch.

I ran "vmstat 3" throughout the build, and that output is attached. I
also manually ran "ps wwwaux >> ps.txt" periodically. This second
output is not overly helpful, because the system was swapping and
unuseable for the times when the 'ps' output would be most useful.

Both outputs are attached, as they compressed pretty nicely.

Jeff Garzik      | A recent study has shown that too much soup
Building 1024    | can cause malaise in laboratory mice.
MandrakeSoft     |

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This archive was generated by hypermail 2b29 : Sat Jul 07 2001 - 21:00:20 EST