Messages in this thread | | | Date | Mon, 20 Jan 2003 21:39:30 +0000 | From | Nuno Silva <> | Subject | Re: Disabling file system caching |
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Folkert van Heusden wrote: >>>Is it possible to disable file caching for a given partition or mount? >> >>No, if you do that mmap(), read(), write() etc. would be impossible. > > > Hmmm, maybe there's some way to explicitly flush the read/write-cache? > Ok, sync will do nice for the write-cache, but for the read-one?
AFAIK, you simply can't... I'm trying to do this for several months and no luck. Linux simply caches everything it can in the read-cache. For 99% of all cases this is very good but, for some situations, this is not desireable.
For the write cache, you can minimize memory usage playing with /proc/sys/vm (see Documentation/filesystems/proc.txt).
Regards, Nuno Silva
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