Just an additional observation: using this code in the timer callback as an
alternative also causes a memory blow-up:
img = QtGui.QImage('tiger.png')
buf = QtCore.QBuffer()
img.save(buf, "BMP")
pxmp = QtGui.QPixmap()
pxmp.loadFromData(buf.buffer(), "BMP")
self.lbl.setPixmap(pxmp)
Ranen
On Fri, Mar 18, 2011 at 3:45 PM, Ranen Ghosh <[email protected]> wrote:
> Hi, I am noticing a memory leak with PySide's QPixmap.fromImage static
> method.
> Here is a small example program to demonstrate it:
> http://pastebin.com/VmKncUFY
>
> For the first 30 seconds or so, everything seems fine. At that point, my
> Xorg process's memory usage starts to shoot up at about 20M per second.
>
> The following info may be helpful:
>
> If I use the QPixmap's constructor with the filename as an argument, rather
> than using the static QPixmap.fromImage method, I don't observe the memory
> issue.
>
> If I don't call self.lbl.setPixmap(pxmp) , I don't observe the memory
> issue.
>
> If I double the timer delay, it takes roughly twice as long for the memory
> spike to happen.
>
> If I replace PySide with PyQt4 in the import statements, I do not observe
> this memory issue.
>
> Ranen
>
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