[mythtv-users] SSDs and Myth frontends ?

Eric Sharkey eric at lisaneric.org
Fri Sep 17 16:00:39 UTC 2010

On Fri, Sep 17, 2010 at 11:04 AM, Brian Wood <beww at beww.org> wrote:
> Even given the fact that SSDs aren't so great at write performance, they should be at least as good as spinning drives, I
> would have thought.

Of course, the answer to this is "it depends".  SSDs have larger block
sizes for writes so if you need to twittle a few bits here or a few
bits there, this effect will hurt you.  If you're writing large
amounts of data in such a way that you're writing whole blocks anyway,
this effect won't amount to much of anything.  On the other hand, if
you're writing to spinning media in such a way that requires frequent
head movements, you run up to a problem which is a non-issue on SSDs.
So it all depends on exactly what type of write you want to do.
>  I'd think that more RAM
> (for disk cache) would solve that, but it doesn't seem to make that much difference.

The disk cache is really for avoiding re-reads, not delaying writes
for arbitrarily long times (which can lead to corrupt file systems on
power failure).


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