[IPython-dev] Fwd: [ipython] ipython-qtconsole uses 100% CPU (#588)
Evan Patterson
epatters at enthought.com
Sun Jul 17 14:28:19 EDT 2011
It would be helpful to know whether the CPU utilization is pylab-specific. I
suspect the trouble may be there.
Evan
On Sun, Jul 17, 2011 at 1:21 PM, Fernando Perez <fperez.net at gmail.com>wrote:
> Hi all,
>
> this looks fairly serious, and we're trying to wrap up the 0.11
> release so that we're not eternally promising 'one more week' forever.
> But hogging a cpu at 100% utilization is a real problem. Can anyone
> else confirm this? And does anyone have ideas as to what could be the
> cause?
>
> Thanks,
>
> f
>
>
> ---------- Forwarded message ----------
> From: rgaudette
> <reply+i-1238118-7704c01a6c981882533d9b8effb70f2d4b39aadd at reply.github.com
> >
> Date: Sun, Jul 17, 2011 at 10:34 AM
> Subject: [ipython] ipython-qtconsole uses 100% CPU (#588)
> To: fperez.net at gmail.com
>
>
> Hi,
> When I run ipython-qtconsole.exe, I observe 100% CPU usage (really 50%
> on my dual core machine) when nothing is running in the console. My
> machine consists of the following configuration:
> Windows 7 64 bit
> Python 2.7.2 64 bit binary install (from python.org)
> PyQT and QT from Christoph Gohlke 's binary distribution
> PyQt-Py2.7-x64-gpl-4.8.4-1.exe
>
> I first observed this behavior on Christoph Gohlke 's
> ipython-0.11.dev.win-amd64-py2.7.exe. I then uninstalled that package
> and pull the latest IPython from github. The latest version still
> exhibits the 100% CPU usage behavior on my machine.
>
> Some other observations that might be helpful:
>
> * If I close the QT console window but leave the kernel running
> (selecting "No, just this console button"), the CPU usage stays at
> 100%.
>
> * The windows console based ipython.exe does not have this behavior on
> my machine.
>
> * Task manager shows that it is pythonw.exe using the CPU
>
> --
> Reply to this email directly or view it on GitHub:
> https://github.com/ipython/ipython/issues/588
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