Re: Uptimes - any guidance?
On Fri, Jun 26, 2009 at 03:10:50PM -0500, Boyd Stephen Smith Jr. wrote:
> In <[🔎] 20090626193651.GA22396@cyrax.ece.utexas.edu>, Kumar Appaiah wrote:
> >But I have seen some
> >people reboot at regular intervals, since they feel it "flushes the
> >memory" and keeps performance good, though I don't really believe that
> >and can't comment on the veracity of those statements. :-)
>
> They are almost certainly hurting their total throughput. First, with the
> downtime of the reboot. Second, with the having to repopulate file system
> cache from disk.
>
> It is a fairly sure way to release space claimed by "ghost" files back to
> the file system and memory claimed by persistent shared memory pools back to
> RAM/swap, but both of those can often be handled without a reboot.
Makes sense. Thanks for confirming my hunch.
Kumar
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