Re: [LAD] [LAU] cancelling I/O with libsndfile

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To: <linux-audio-dev@...>
Date: Monday, July 4, 2011 - 11:30 pm

Dan Muresan wrote:

> >> > I never much liked the VIO layer. It was only ever added because

Whaaat? You're kidding me right?

I haven't measured it, but my educated guess is that if you're
reading 16384 frames at a time from a FLAC file on current hardware,
then the difference between reading st_blksize sized blocks and
non-st_blksize sized blocks will be absolutley swamped, by disk
latencies, cache latencies, scheduling latencies and file
decoding overhead.

You might want to google the term "premature optimisation".

Erik
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Erik de Castro Lopo
http://www.mega-nerd.com/
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Messages in current thread:
Re: [LAD] [LAU] cancelling I/O with libsndfile, Erik de Castro Lopo, (Tue Jun 14, 12:15 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Dan Muresan, (Tue Jun 14, 7:09 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Erik de Castro Lopo, (Tue Jun 14, 7:30 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Dan Muresan, (Tue Jun 14, 7:49 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Erik de Castro Lopo, (Tue Jun 14, 8:44 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Dan Muresan, (Tue Jun 14, 10:01 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Fons Adriaensen, (Tue Jun 14, 11:21 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Dan Muresan, (Tue Jun 14, 11:42 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Fons Adriaensen, (Tue Jun 14, 12:12 pm)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Dan Muresan, (Tue Jun 14, 12:55 pm)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Erik de Castro Lopo, (Tue Jun 14, 10:54 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Dan Muresan, (Mon Jun 20, 9:51 pm)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Erik de Castro Lopo, (Mon Jun 20, 10:52 pm)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Dan Muresan, (Tue Jun 21, 6:24 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Erik de Castro Lopo, (Tue Jun 21, 6:37 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Dan Muresan, (Tue Jun 21, 6:57 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Erik de Castro Lopo, (Tue Jun 21, 7:12 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Dan Muresan, (Tue Jun 21, 7:50 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Erik de Castro Lopo, (Tue Jun 21, 7:58 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Dan Muresan, (Mon Jul 4, 11:58 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Erik de Castro Lopo, (Mon Jul 4, 11:30 pm)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Dan Muresan, (Tue Jul 5, 5:15 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Erik de Castro Lopo, (Tue Jul 5, 5:30 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Dan Muresan, (Tue Jul 5, 9:42 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Erik de Castro Lopo, (Tue Jul 5, 10:25 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Dan Muresan, (Tue Jul 5, 11:17 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Erik de Castro Lopo, (Tue Jul 5, 11:29 am)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Dan Muresan, (Thu Jul 7, 1:38 pm)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Paul Davis, (Thu Jul 7, 2:00 pm)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Dan Muresan, (Thu Jul 7, 2:29 pm)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Paul Davis, (Thu Jul 7, 2:39 pm)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Dan Muresan, (Thu Jul 7, 3:39 pm)
Re: [LAD] [LAU] cancelling I/O with libsndfile, Dan Muresan, (Tue Jun 14, 12:03 pm)