Messages in this thread | | | Date | Fri, 17 Sep 1999 11:20:38 -0400 (EDT) | From | Benjamin LaHaise <> | Subject | Re: Virtual Memory Fragmentation and "top" |
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On Fri, 17 Sep 1999, dLux wrote: ... > Until that, my machine seems to be much more faster! It seems like > a computer, which has 128M memory(and it has). Before that I often > get constant swapping when I open a large window in netscape. > I feel that "top" fragments the virtual memory and the swap, but I > don't know how. > Sounds interesting?
It's a possibility. Could you verify that the system is swapping, not just discarding cached pages and re-reading them, by running 'vmstat 1' while the system is in this state (and stopping top at some point in the trace)?
> I'm using 2.2.10 kernel with a "restricted proc" patch. But this > problem is stands from the early 2.2 until 2.2.10 (>2.2.10 I had > problems, that's why I use that). > I have tried 2.3.17 also, and it seems to have the similar > problem, but I have some strange IPC problems, so I didn't test it.
Could you elaborate on the problems you're having so they can get fixed allowing you to test 2.3.recent? 2.3.16+ have Andrea's LRU page cache patch in, and as such have a much better replacement strategy for cached data which should eliminate the behaviour you're seeing, so it would be a very useful comparison.
-ben
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