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|ID||Project||Category||View Status||Date Submitted||Last Update|
|0000059||Ecere SDK||ide||public||2008-05-03 18:30||2012-03-29 07:52|
|Target Version||Fixed in Version|
|Summary||0000059: Ecere IDE using too much CPU upon File > Open|
|Description||While asking Ecere IDE to open file/project, it takes a great deal of CPU from the moment I click in the menu until the Open File dialog is presented. In order to see what's going on, I strace'd it as:|
$ strace -o file_open.log ide
The resulting log is attached.
|Additional Information||Vim has strace syntax highlighting, very helpful given the size of the log (:set ft=strace).|
|Tags||No tags attached.|
|Attached Files||file_open.log.gz [^] (115,386 bytes) 2008-05-03 22:19|
The log is filled up with "EAGAIN (Resource temporarily unavailable)" which is usually caused by network resources being disconnected or the like...
In what directory did the Open File dialog open?
Are there any remote resources within that directory?
Does this happen all the time for you, can you reproduce it easily?
The Open File dialog opened at my home (/home/rnsanchez). There's no reason to exist network activity on that box, as there's no NFS or anything alike. I'll check it further, ASAP.
It happens all the time, and not only in the Open File dialog. Most combo boxes (like the one in Project > Settings) show up a considerable lag between click and window response, and the CPU usage in those moments is pretty high---so high that sometimes the whole X session freezes for brief moments.
I'll try to provide further strace logs with different activities.
edited on: 2008-05-06 03:14
This might also be related to processing the unicode fonts...
Do you have non standard characters in there to be displayed?
But this EAGAIN error definitely says "resource temporarily not available" ...
So maybe your fontconfig has some wrong paths in there?
I don't think there was any odd character (opening HelloWorld example in the home directory).
There are some dead fontpahts, though. Wouldn't this harm other applications?
I should test it again soon (probably this afternoon, ~ now + 3 hours).
The problem was the runtime library using shared memory pixmaps by default, along with X calls which can not be accelerated for shared memory pixmaps.
It is not clear if there ever was a performance improvement from using shared memory on a different system. Shared memory pixmaps are now disabled by default, and Window and Display properties were added to enable them. An LFB software implementation for the X driver (rather than using X call) could be written in an attempt to speed it up.
|2008-05-03 18:30||rnsanchez||New Issue|
|2008-05-03 22:19||rnsanchez||File Added: file_open.log.gz|
|2008-05-05 19:51||jerome||Note Added: 0000027|
|2008-05-05 19:51||jerome||Status||new => feedback|
|2008-05-06 03:04||rnsanchez||Note Added: 0000030|
|2008-05-06 03:14||jerome||Note Added: 0000031|
|2008-05-06 03:14||jerome||Note Edited: 0000031|
|2008-05-06 14:06||rnsanchez||Note Added: 0000033|
|2008-05-09 18:40||jerome||Status||feedback => assigned|
|2008-05-09 18:40||jerome||Assigned To||=> jerome|
|2008-05-09 18:40||jerome||Priority||normal => high|
|2008-05-11 02:07||jerome||Status||assigned => resolved|
|2008-05-11 02:07||jerome||Resolution||open => fixed|
|2008-05-11 02:07||jerome||Note Added: 0000036|
|2009-05-03 03:43||jerome||Status||resolved => closed|
|2010-07-25 21:54||redj||Relationship added||child of 0000433|
|2012-03-29 07:52||redj||Category||=> ide|
|2012-03-29 07:52||redj||Project||@3@ => Ecere SDK|
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