Messages in this thread | | | Date | Wed, 5 Jul 2000 16:01:55 -0700 | From | Larry McVoy <> | Subject | Re: BK performance tip (22x faster) |
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On Wed, Jul 05, 2000 at 11:28:08PM +0100, Alex Buell wrote: > On Wed, 5 Jul 2000, Richard Gooch wrote: > > > > 2.3/4 kernels use a SLAB cache for inodes, instead of an ad hoc > > > cache. the old limit was used to determine when to reap inodes. > > > the new system reaps them automatically when system memory is short. > > > > Good. That's what I was hoping for. > > Does this means buffer cache corruption causing Linux 2.2.x to lose its > lunch are a thing of the past? 'Cause I've just had my machine die twice > in the last two days due to this thing! > > I'd love to see self-correcting software ECC for caches.
Hmm. BK has a sort of lame checksum that it uses for integrity and we used to see checksum failures frequently until I stopped buying memory without ECC. This same lame checksum was what found the cache aliasing bug in SPARC/Linux.
At any rate, I have been using 2.2.15-pre9 for months without any errors so are you sure that it is buffer cache corruption and not bad memory dimms? If you are sure, I want to know. -- --- Larry McVoy lm@bitmover.com http://www.bitmover.com/lm
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