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Re: [Discuss-gnuradio] File Sink slow?

From: Eral Türkyilmaz
Subject: Re: [Discuss-gnuradio] File Sink slow?
Date: Wed, 7 Nov 2012 15:36:00 +0000 (UTC)
User-agent: Loom/3.14 (http://gmane.org/)

 <mleech <at> ripnet.com> writes:

> Try re-enabling buffering.
> Try simplifying your flow, so that you're doing less conversion to various 
forms -- each of those steps costs some number of operations, and your total 
data flow is 4Msps, because you're looking at two channels of 2Msps.

Ok I tried now to dump both channels directly to a file and turned buffering on 
again. (see http://s14.postimage.org/r5ekme5pd/dump_test.jpg)

The whole datarate is now 2*2MS/s = 4 MS/s and the disk writing speed should be 
at least 2*2MS/s*4byte/S (I and Q) = 16MB/s. I still get some overruns.

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