Messages in this thread | | | Date | Thu, 29 Apr 2004 07:48:04 -0700 | From | Marc Singer <> | Subject | Re: ~500 megs cached yet 2.6.5 goes into swap hell |
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On Thu, Apr 29, 2004 at 11:43:25AM +0200, Helge Hafting wrote: > Brett E. wrote: > [...] > >Or how about "Use ALL the cache you want Mr. Kernel. But when I want > >more physical memory pages, just reap cache pages and only swap out when > >the cache is down to a certain size(configurable, say 100megs or > >something)." > > Problem: reaping cache is equivalent to swapping in some cases. > The cache isn't merely "files read & written". > It is also all your executable code. Code is not different from > files being read at all. Dumping too much cache will dump the > code you're executing, and then it have to be reloaded from disk.
Hmm. I was under the impression that mapped pages were code and unmapped pages were IO page cache. Are you suggesting that code is duplicated?
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