[Qt-creator] Qt Creator response too slow

[Juha.Ruotsalainen at nokia.com]

For anyone interested:
I added a QTime::start() and elapsed() lines around 'cursor.endEditBlock()' in basetexteditor.cpp's line 820 (snapshot downloaded this morning).
When I experience slow responses in Creator (for my test runs) endEditBlock() at that line takes around 1.8 seconds to complete. 

Without testing a bit, I would imagine all the sluggishness is due to something lengthy happening in endEditBlock(). Quickly looking at the endEditBlock() implementation, it is playing around with QSharedDataPointer-stuff. That may cause network accesses somewhere in the background.

--
jussi

-----Original Message-----
From: qt-creator-bounces at trolltech.com [mailto:qt-creator-bounces at trolltech.com] On Behalf Of ext Boy Lenssen
Sent: 07 May, 2009 15:30
To: qt-creator at trolltech.com
Subject: Re: [Qt-creator] Qt Creator response too slow

Sounds like you're on the good route! I believe the lasting time (about
300 ms) is about what I'm experiencing (or maybe a bit more...not sure)

-----Original Message-----
From: Juha.Ruotsalainen at nokia.com [mailto:Juha.Ruotsalainen at nokia.com] 
Sent: donderdag 7 mei 2009 13:37
To: qt-creator at trolltech.com
Subject: Re: [Qt-creator] Qt Creator response too slow

Valgrind, good as it is, is N/A for Vista.

I did a quick trial runs with Sysinternals' Process Monitor. Test setup 
was the same in both cases: same project, same code file, same point in
a method, hit enter at that line. 

The main difference between 1.0 and 1.1 is that the latter does ends up
spending 0.3 of a second at the nearest Windows Domain Controller
(\\xxwdc101\PIPE\samr) doing pipe operations: writing, reading and
calling
FileSystemControl (FSCTL_PIPE_TRANSCEIVE). These DC accesses occurred 14
times in my small log with each occurrence lasting for about 0.2-0.3
seconds.

You doin' some funky pipe stuff in QtCreator now ;)

--
jussi


-----Original Message-----
From: qt-creator-bounces at trolltech.com
[mailto:qt-creator-bounces at trolltech.com] On Behalf Of ext Aleksandar D.
Balalovski
Sent: 07 May, 2009 14:19
To: qt-creator at trolltech.com
Subject: Re: [Qt-creator] Qt Creator response too slow

On Thu, May 7, 2009 at 1:15 PM,  <Juha.Ruotsalainen at nokia.com> wrote:
> Is there some option to enable humongous debug/event logs that would
help in pinpointing where time is spent?
>

Maybe with valgrind?

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