[mythtv] RAMDISK

Robert Kulagowski mythtv-dev@snowman.net
Fri, 1 Nov 2002 09:15:54 -0600


 
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Did some quick calculations; 30 seconds of buffering at 3300Kbps
would require 12-13 megabytes of DRAM.  Do we know if the linux
buffer cache architecture is smart enough to handle this case without
requiring a re-read from disk?  I won't have access to my linux box
until this weekend, so I can't test it out on my own.  Any thoughts
on whether having a ringbuffer in DRAM on a RAM disk would help, with
a worker thread writing from the in-memory buffer to disk rather than
reading and writing directly to disk?  It might help smooth out some
hard drive issues, where concurrent access on slower hard drives
might cause hiccups.

Just a thought.


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