[mythtv-users] How big CF card for frontend?
gull at gull.us
Tue Feb 17 02:16:54 UTC 2009
Dan Wilga wrote:
> I agree. Whenever Linux has swap available it tends to use little bits
> of it whether it needs to or not. Any unnecessary writes to a CF card
> are a bad thing, since they shorten its life.
It does that to free up RAM to use as disk cache. You can tune it by
writing a number between 0 and 100 to /proc/sys/vm/swappiness. Smaller
numbers mean less swapping. There's a long discussion of the merits of
But if your goal is to minimize disk activity, and you don't want to
eliminate swap entirely, "echo 0 >/proc/sys/vm/swappiness" should help.
Sometimes it's good to have some swap just as an emergency backup, so
the out-of-memory killer doesn't whack your X server if you happen to
run something unusually memory intensive. (It always seems to whack the
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