Hi, While using gnuradio (git master) on a Linux Fedora 17 i686 (32bit), I saw that the refresh rate of the Qt sink was very slow (~2fps).
I saw that in commit 3259e2a6, the update delay timeout was changed from 0.1s (10fps) to 0.5s (2fps). So my 2 fps make sense. As a quick workaround, I did the attached patch to be able to change this refresh rate directly from GRC. I think the 10fps default was better than this 2fps. If there is no special reason for keeping this 2fps default, I also suggest to put it back to 10fps. Regards, -- Julien Olivain.
diff --git a/gr-qtgui/grc/qtgui_sink_x.xml b/gr-qtgui/grc/qtgui_sink_x.xml index 83d6ec2..351fad6 100644 --- a/gr-qtgui/grc/qtgui_sink_x.xml +++ b/gr-qtgui/grc/qtgui_sink_x.xml @@ -24,6 +24,7 @@ qtgui.$(type.fcn)( $plottime, \#plottime $plotconst, \#plotconst ) +self.$(id).set_update_time(1.0 / $refresh_rate) self._$(id)_win = sip.wrapinstance(self.$(id).pyqwidget(), Qt.QWidget) $(gui_hint()($win))</make> <callback>set_frequency_range($fc, $bw)</callback> @@ -133,6 +134,12 @@ $(gui_hint()($win))</make> <type>gui_hint</type> <hide>part</hide> </param> + <param> + <name>Refresh rate</name> + <key>refresh_rate</key> + <value>10</value> + <type>real</type> + </param> <sink> <name>in</name> <type>$type</type>
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