linuxaudio.org

On Sat, March 9, 2013 9:49 am, Peder Hedlund wrote:

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> Quoting Len Ovens :

>

> The previous reply was due to a trigger happy Send finger, sorry about

> that...

been there...
>>> An obvious workaround would be having a cron job doing a 'touch

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>>> TempFile' or something similar on the disk once every 5 minutes or so.

>>

>> Would that actually touch the disk or just the copy of the temp file in

>> the ram buffers?

>

> Initially it would only hit the cache but I think it's be written to

> disk within the remaining five minutes.

I would guess it would depend on how busy the system was. I don't think it

would be high priority on a system running real time audio tasks. I don't

know enough about background disk writing to really say though.
> You could issue a 'sync' but I'm not sure a forced sync during, say, a

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> recording would be the proper thing to do, since it syncs all cached

> data on all disks.

Ya that was my thought too.

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>

> Another option would be to do a 'dd if=/dev/zero of=TestFile bs=1k

> count=1 conv=fdatasync' to make sure the data gets written to disk

> immediately (http://romanrm.ru/en/dd-benchmark).

Run in a script with sleep, not from cron which might be turned off for

recording :)  apt-get update running in the BG is enough to give me xruns

sometimes (I am not sure it is apt-get itself, but there is system disk

and network activity too)
--

Len Ovens

www.OvenWerks.net
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