On 02/05/2012 04:08 PM, Tom Rondeau wrote:
On Sun, Feb 5, 2012 at 3:49 PM, Marcus D. Leech <mle...@ripnet.com
<mailto:mle...@ripnet.com>> wrote:
I have an application, SIDSuite, that I've been running on my
hardware here for about 18 months continuously, with reasonable
performance
(the UI isn't totally-snappy, but acceptable). Some time
recently, with an upgrade of Gnu Radio, the performance became utterly
unacceptable--the UI became unusable, and updates to the FFT and
Waterfall sinks became very "chunky". I haven't changed the
app in months and months.
So, I started taking my Gnu Radio back further and further in
time, until I was back to "normal". I had to regress my GIT tree
back to:
commit 2ed887b69a3b15840830998c4e6157176d427f60
Author: Josh Blum <j...@joshknows.com <mailto:j...@joshknows.com>>
Date: Sat Dec 31 13:06:01 2011 -0800
In order to get decent performance again.
I have no idea what's causing the performance melt-down, but
regressing back to that commit fixes it, again with no changes to the
application in question.
I will try creeping forward from this commit to see if I can
narrow it down. Blah.
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
The only addition that I can think of is the max_noutputs addition
that went into the scheduler, which was merge:
ab7cfce4a78dbb95a7c8871f56f4cb037e5b1bb2
Made on Jan 3.
All this does is add a std::min check in line for sources and normal
blocks, though, and on my machines showed absolutely no
performance degradation. If this is seriously what's causing your
problems, then you must have been right on the edge performance-wise
and these few added cycles took you over the top.
Tom
That doesn't appear to be it. Just built and installed that, and app is
still fine. Fast-forwarding a little bit and see what happens.
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
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