Messages in this thread | | | Date | Tue, 10 Jul 2001 20:27:15 -0300 (BRST) | From | Rik van Riel <> | Subject | Re: dead mem pages |
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On Tue, 10 Jul 2001, Dirk Wetter wrote:
> > It would be good to know what these 2.8GB of cached pages are. > > believe me, i would like to know too where all the $$$ memory > went to. ;-)
Most likely swap cache, that means it is the memory from your simulations, just removed from the page tables and put in the swap cache.
> > Again on a general note, the 2.4 kernel's VM is new and hence not fully > > mature. So the short and unhelpful answer to your query is probably that > > the current VM system is not well tuned for your workload (4.3GB of memory > > hungry simulations on a 4GB machine). > > concerning the maturity that's also the answer i got from the kernel > guru's at last USENIX in boston. but ihmo it *should* become soon > better for the future if Linux intends to become bigger in the server > business. (my $0.02)
It'll get better as soon as we have the time, for 2.4.7 the VM statistics have already improved a bit so people are no longer fooled by large "cached" figures ;)
Actual improvements to the code, if needed at all, will come with time ... more than $0.02 will get you ;)
regards,
Rik -- Virtual memory is like a game you can't win; However, without VM there's truly nothing to lose...
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