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Message-ID: <002001c30f60$523ccfe0$24784e51@ellixia>
From: "Elfyn McBratney" <elfyn-cygwin AT exposure DOT org DOT uk>
To: "cygwin" <cygwin AT cygwin DOT com>
References: <Pine DOT GSO DOT 4 DOT 44 DOT 0304301513591 DOT 18331-100000 AT eos> <01c701c30f5b$1e283d20$9aea86d9 AT ellixia>
Subject: Re: App w/excessive soft page faults
Date: Wed, 30 Apr 2003 22:07:14 +0100
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> > 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 (?).

Having just re-read that, if your program functions and doesn't SIGSEGV then
it it won't be stack dumping, will it?

Elfyn


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