[Bzr-windows] Bazaar Explorer using over 100MB and "out to lunch for 15 minutes"

[Maritza Mendez]

On Fri, Sep 25, 2009 at 9:46 AM, John Arbash Meinel
<john at arbash-meinel.com>wrote:

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> Maritza Mendez wrote:
> >
> > Using bzr 1.18 and bzr 0.8...
> >
> > I just used BE to init a 1.14 repo in an existing project directory.
> > I then used BE to 'bzr add' the top-level directory, which has 10485
> > entries (directories and files).
> > The add went ok.
> > It took BE 15 minutes (!!) to refresh the view, during which time
> > Application Not Responding.  Memory use peaked at about 102MB.
> > When the refresh finally finished, memory use dropped back to 59MB.
> > Still big, but not as big.
> >
> > During this time, I had ample time to go to open a DOS shell and do 'bzr
> > stat' which virtually instantaneously listed the 10485 added files.
> >
> > The content of 'bzr stat' > LIST.TXT is only 620KB.
> >
> > Is it possible that BE (Qt) is just not handling strings very
> > efficiently?  Just guessing...
> >
> > I'm not sure how to write a helpful bug report for this.
> >
> > ~M
> >
>
> 100MB is not particularly surprising.
>
> I would also say that there is a serious bug with bzr 1.18 and 1.14
> repos if you actually enable line-ending conversions. As such, I would
> recommend going with bzr 2.0, and the --2a format.
>
> The 15-minutes part is fairly surprising. I don't really know what BE is
> doing at that point, though if it just doing something like 'status'
> internally, it might be trying to sha1sum all 10k files. On the other
> hand, if you have content filters active, that may also be playing a
> role, and it is filtering + sha1summing all 10k files.
>
>
> I'll note that just importing bzrlib and pyqt, etc, gets me to around
> 20-30MB of memory consumption.
>
> So I would report a bug about bzr-explorer taking a long time to refresh
> the view when adding lots of files.
>
> However, I would recommend that you upgrade to the latest version first,
> to make sure it hasn't already been fixed.
>
> (Windows installers for 2.0.0 final have just been uploaded.)
>
> John
> =:->
>
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Thanks, John.  I will try the 2.0.0 installers in a sandbox (sorry, not in
production just yet) probably sometime next week.  If the behavior persists,
I will file a bug along the lines you suggest.

~M
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