Re: Maybe a VM bug in 2.4.18-18 from RH 8.0?

Rik van Riel
2002-12-06T12:41:45Z

On Fri, 6 Dec 2002, Norman Gaywood wrote:
> On Thu, Dec 05, 2002 at 07:35:49PM -0500, Pete Zaitcev wrote:

> > Check your /proc/slabinfo, just in case, to rule out a leak.
>
> Here is a /proc/slabinfo diff of a good system and a very sluggish one:

> > inode_cache 305071 305081 512 43583 43583 1 : 124 62
> > buffer_head 3431966 3432150 128 114405 114405 1 : 252 126

Guess what ? 120 MB in inode cache and 450 MB in buffer heads,
or 570 MB of zone_normal eaten with just these two items.

Looks like the RH kernel needs Stephen Tweedie's patch to
reclaim the buffer heads once IO is done ;)

regards,

Rik
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