X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sbcglobal.net; s=s1024; t=1409978326; bh=glN++h9niVLLZjNsDiWZalGbBeT57iDTFIbZMy0J8sA=; h=Received:Received:Received:DKIM-Signature:X-Yahoo-Newman-Id:X-Yahoo-Newman-Property:X-YMail-OSG:X-Yahoo-SMTP:Content-Type:Mime-Version:Subject:From:In-Reply-To:Date:Content-Transfer-Encoding:Message-Id:References:To:X-Mailer:From:Subject; b=A8n3efVjF5kAgEYUJ/8nhJadti1aNlNEmCHr7btNMryOkkd45g/enORxuohBO6JXAYWysOYBCqpIL4GUkNTZwUxVFWtv0Hq5CSZf2J7+W7tUdFxyik40Jd8zjs+qw1M6UGf/5GXiZL1A92K1zcDghqevuCkWH2GBcagrK9JxIZo=
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=sbcglobal.net;
	b=O8nrssu4PL0Pqrs0ZpKMPRHcyJVeHtwnlx4EJBb9AlYX3z0zm7mTvkTpO3NIbtA5GxupzCtp3w+T35+M2GotDseNtK+7ogsH0F9RUoNhuPS+NmVGzCmbk97yfr2J1cPhysnfCbozA8eapiHE7a5i6iaK0Ak9xql4/P4bB2dn39Q=;
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sbcglobal.net; s=s1024; t=1409978326; bh=glN++h9niVLLZjNsDiWZalGbBeT57iDTFIbZMy0J8sA=; h=X-Yahoo-Newman-Id:X-Yahoo-Newman-Property:X-YMail-OSG:X-Yahoo-SMTP:Content-Type:Mime-Version:Subject:From:In-Reply-To:Date:Content-Transfer-Encoding:Message-Id:References:To:X-Mailer; b=5XAev1pA5f5VvA1Uh0YQP2uwlGoC7fNzRh3GIEJPizLYU9aE2hkGrZtepM+74XLkR5aO8YtyELDZLrcfpks6p3vLH0YjNA1IuHKSXR/yOMNI3cIzmOTvxk1LdfVnrB7T/x1uS1bMmSLU5/NMgoridQQcJ1+r06J8PQhzsq4Y5DE=
X-Yahoo-Newman-Id: 648352 DOT 42064 DOT bm AT smtp227 DOT mail DOT gq1 DOT yahoo DOT com
X-Yahoo-Newman-Property: ymail-3
X-YMail-OSG: X_eOWpsVM1na0CnWuYBd3g0XX..DWwA_Gn9gsSafnP8OnAn
 DB2ZazKP8DB9npAd9qX2rNrHqtizCr31YofHxq3Krzj1tQk2rNwTUszUEJRZ
 5iLoxYcUDMbL5Z_Td0qON5PHJZI5SwFc09XU30uKJGkK1CY3arxgZjpfaqmm
 Qy0vBjiHoz48WJ_ZM_AdOiqkDb9803qgCvdhHLkZWt4SqObPRRapXLbKPkD3
 hRcFXamy7F2OebDKBude37gjlW7FVt67PIOG4.dr5wjfpnptOOEr56GMTstR
 0XgXkGDMxnk36YFN3tIq5AtbaraMJwdCSbxvf4MkAQX7fFHmGbmU6IyLS5Uu
 784Ir5icVF3wA39OiOmSGFiP6usBLM6m_QKAbbD4TeTyDU6Y0hDojLQTMr0W
 1RPW7K4Hgaa8NBUJsl8e0HpxiJgm0b581.q9NFp.9e57xu03wwElm8z0ATyU
 VLvq2WXTFDdfhqqDkK_9KNk0li9mXuQGNhu1Gt344.iz8q3C8NNCaHi5vxLa
 nisix9t_8GiCpWfeRKbSZf9Lnjt8vhl1nmGaW1M3vf6Ybv4OGhjPA
X-Yahoo-SMTP: b8jVkbOswBAqZ4BhECp7nxPJUfTGEnEGv_G4qgQeZMeAbA--
Content-Type: text/plain; charset=us-ascii
Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\))
Subject: Re: [geda-user] gschem sometimes takes a nap
From: Edward Hennessy <ehennes AT sbcglobal DOT net>
In-Reply-To: <68DB3C77-2335-4016-B466-20CA135CD4CC@sbcglobal.net>
Date: Fri, 5 Sep 2014 21:38:44 -0700
Message-Id: <75C94905-4B16-4DEE-B42F-E33F35312204@sbcglobal.net>
References: <lu83am$t8p$1 AT ger DOT gmane DOT org> <CAGRhJMZt5Z5DdVO=+=b+-6dDoOEAB4V57=MWuStR5imC1+WWQg AT mail DOT gmail DOT com> <7C56210D-D45D-4E93-B755-E373AC009668 AT sbcglobal DOT net> <lubvfc$p5k$1 AT ger DOT gmane DOT org> <68DB3C77-2335-4016-B466-20CA135CD4CC AT sbcglobal DOT net>
To: geda-user AT delorie DOT com
X-Mailer: Apple Mail (2.1878.6)
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id s864cp3E015379
Reply-To: geda-user AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: geda-user AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk


On Sep 5, 2014, at 7:59 PM, Edward Hennessy <ehennes AT sbcglobal DOT net> wrote:

> 
> On Sep 5, 2014, at 2:25 AM, Kai-Martin Knaak <knaak AT iqo DOT uni-hannover DOT de> wrote:
> 
>> Edward Hennessy wrote:
>> 
>>> Does anyone have a schematic that can replicate
>>> the issue that would be available for me to use?
>> 
>> See my schematics guinea pig in the attachment. I was able to trigger the 
>> freeze by moving chunks of the schematic around.
>> 
> 
> I believe I've reproduced the issue on my machine with your schematic. I can
> sometimes get gschem to freeze a bit when moving objects around. However, when
> selecting all objects on the schematic using Ctrl-A, my gschem will freeze for
> five seconds.
> 
> When this freeze occurs, the function o_redraw_rects() is getting called with
> over 6000 rectangles. And, it appears the time is spent repainting the background.
> 
> Shutting off the grid or switching to dots makes the problem much less pronounced.
> 
> Does this description match what you are seeing?

A potential fix is checked into source control. Hopefully, it isn't just tuned to execute faster on my machine.

Something not intuitive is going on under the hood:

- The change in x_event.c reduces the number of invalid rectangles to one - yields a speed improvement
- The change in x_grid.c moves the cairo_stroke() into the for loop - performance actually gets WORSE
- When both changes are combined - performance is much faster than the changes in x_event.c alone

I've been able to resize the gschem window and get the naptime up to 10 seconds. These two changes reduce the time, under the same conditions, to about 1 second.

Cheers,
Ed