[mythtv-users] Wake up disks on events
myth at dermanouelian.com
Thu Sep 11 21:00:20 UTC 2008
On Sep 11, 2008, at 1:40 PM, John Drescher wrote:
> On Thu, Sep 11, 2008 at 4:30 PM, Brad DerManouelian
> <myth at dermanouelian.com> wrote:
>> On Sep 11, 2008, at 11:09 AM, David Brodbeck wrote:
>>> Brad DerManouelian wrote:
>>>> That's a terrible idea. Flash drives can't keep up with the read/
>>>> demands of a database application in terms of speed or longevity.
>>>> Don't do that.
>>> I'm not convinced that's true, but admittedly I haven't tried it in
>>> particular application.
>>> For databases it's often the seek speed that matters, not so much
>>> data rate. Flash drives have excellent seek speed.
>> Often, yes. Specifically, not in this case.
>> Hint: Look at write activity in MySQL while recording a program.
>> Specifically, look at the seektables.
> If I were interested in using flash for my database I would use the
> kernel parameters to delay the writes as long as it would let me so
> that it would lessen this effect. Or possibly use laptop mode.
You would be setting yourself up for a database corruption nightmare
should something go wrong - like loss of power or memory corruption.
Then again, I don't have to recover your database so I say go for it!
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