<div dir="ltr"><br><br><div class="gmail_quote">2008/9/24 jansenj <span dir="ltr"><<a href="mailto:jansenj%2Bmyth@gmail.com">jansenj+myth@gmail.com</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
I've noticed my hard drive thrashing a lot while recording 2 hd shows<br>
(from hdhomerun) and watching a third HD show on a frontend/backend.<br>
I've noticed some issues with the 2 hd recordings when I do this. Is<br>
there an easy way to reduce the amount of head movement on the hard<br>
drive? Can you force an IO buffer so you can burst closer to 8mb or<br>
something along those lines. Does the HD ring buffer help out with<br>
normal recording? Otherwise is there a generic linux parameter that<br>
could help out. I have 1gig of RAM, would more help? I only have 1<br>
hard drive right now for recordings. Any suggestions?<br><br>
</blockquote></div>One of the causes for this is Myth's fsync behavior.<br><br>While recording, Myth will periodically call fsync on the recording file. This tells the OS to immediately commit the data to disk.<br><br>
You can remove this in the source, but I would suggest not doing it if you have a remote backend with NFS mounted storage.<br><br>Cheers,<br><br>Allan.<br></div>