Re: [Audacity-devel] sync problem solution

[Dominic M. <do...@mi...>]

Otto Wyss wrote:
>>There are new benefits of this code: the amount of data written
>>to disk during recording should now be reduced by nearly a factor
>>of 6 (it only writes to disk every complete 1 MB block now, roughly
>>every 6 seconds - before it rewrote that same block 5-6 times
>>before moving on to the next one) but because WaveTrack can display
>>wave data that's in its append buffer, the recording display is
>>smoother than ever.
> 
> 1MB seems a little large for me. Can you give some reason for this size?

The problem with using smaller block files is that you start to run
into the operating system overhead per file.  Say you record one hour
of audio.  That's already ~635 1 MB block files.  Deleting this
directory takes maybe 10-15 seconds.  If the block files were only
256K, that grows to nearly a minute.  This is also a problem if you
save the project into a different directory: it has to move all of
those files, which also takes time (less time than copying, but
far less time than moving a single file).

If you want to try Audacity with a different block size, it's very
easy on Unix:

   audacity -blocksize 262144

I'd also recommend running the "Benchmark" test with different block
sizes to get an idea of how fast editing operations are.

- Dominic


> O. Wyss
> 
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