pagecache sysctl ignored? (fwd)

From: Tigran Aivazian (
Date: Wed Sep 06 2000 - 06:52:42 EST

argggh.... couldn't they keep the to be valid... or keep - it's much easier to remember than :)

---------- Forwarded message ----------
Date: Wed, 6 Sep 2000 12:31:06 +0100 (BST)
From: Tigran Aivazian <>
Cc: Rik van Riel <>
Subject: pagecache sysctl ignored?

Hi guys,

I always suspected that Linux VM is perfect but the apparent horrible
performance thereof is merely due to bad choice of default tunables. Now,
I changed /proc/sys/vm/pagecache to be "2 15 50" but I still see pagecache
taking up more than 99% of my memory (instead of 50 or 65?). So I grepped
the source and see that the tunable is in fact totally ignored.

Is this what needs to be done to solve all so-called "Linux VM problems"?
I.e. to find which parts of pagecache code need to be aware of the
pagecache tunable (defined in mm/swap.c)?


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
Please read the FAQ at

This archive was generated by hypermail 2b29 : Thu Sep 07 2000 - 21:00:25 EST