Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sources.redhat.com/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
X-Authentication-Warning:	eos.vss.fsi.com: ford owned process doing -bs
Date:	Wed, 30 Apr 2003 16:03:23 -0500 (CDT)
From:	Brian Ford <ford AT vss DOT fsi DOT com>
X-X-Sender:	ford AT eos
To:	Elfyn McBratney <elfyn-cygwin AT exposure DOT org DOT uk>
cc:	cygwin <cygwin AT cygwin DOT com>
Subject:	Re: App w/excessive soft page faults
In-Reply-To:	<01c701c30f5b$1e283d20$9aea86d9@ellixia>
Message-ID:	<Pine.GSO.4.44.0304301601010.18331-100000@eos>
MIME-Version:	1.0

I tried setting a break point on RtlTimeFieldsToTime and
RtlTimeFieldsToTime+0x3dd.  They never triggered.

Do breakpoints in dlls work?

On Wed, 30 Apr 2003, Elfyn McBratney wrote:

> > I have an app that is generating excessive soft page faults 500-700+/sec.
> > pfmon shows they happen here:
> >
> > SOFT: RtlTimeFieldsToTime+0x3dd : 0a7cb004
> > SOFT: stricmp+0x2f6 : 0a7da3ac
> >
> > This pattern repeats endlessly.
> >
> > We probably do make a lot of time related calls, but is this page faulting
> > behavior "normal"?  Any idea of how to track this back through cygwin1.dll
> > and into my app?  Thanks.
>
> First you need to compile your application with debugging symbols (the '-g'
> flag to gcc/c++). Once you've done that you can start your program under gdb
> like so
>
> $ gdb /path/to/app.exe
> (gdb) run [put any args here]
>
> and you can then issue the 'bt' command to gdb to get the backtrace, or if
> you suspect the problem is occurring inside the (Cygwin) DLL you can do
>
> (gdb) dll cygwin1
> (gdb) thread 1
> (gdb) bt
>
> this... I may have some of the above wrong (?).
>
> Elfyn
>

-- 
Brian Ford
Senior Realtime Software Engineer
VITAL - Visual Simulation Systems
FlightSafety International
Phone: 314-551-8460
Fax:   314-551-8444


--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

- Raw text -