[mythtv-users] Hard disk access
Michael T. Dean
mtdean at thirdcontact.com
Mon Dec 12 21:39:48 EST 2005
Mike Grusin wrote:
>I've been wondering this myself ever since I got my FE+BE box running. The
>hard drive light blinks approximately every second when it's "not doing
>anything" (which doesn't happen much anymore ;) According to system
>information in Myth, almost all of the RAM is being used (512M), but none of
>the swap, so the drive access always puzzled me.
You're almost definitely running programs that are constantly writing
data to disk (i.e. syslogd/syslog-ng). By default, Linux will try to
dump that data to the disk (because volatile RAM is an unsafe place for
storage--reliability over quiet/hardware-life).
However, you can configure a "Laptop Mode" and set the amount of time
the kernel should wait before flushing these buffers. You'll also want
to modify the way filesystem access times are handled (i.e. turn off
access time updates, etc.).
And, if you want to understand what's happening, read the articles
linked from these two articles...
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