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GDB STL Memory Usage Issue
- From: "Ravi Ramaseshan" <ramaseshan dot ravi at gmail dot com>
- To: gdb at sourceware dot org
- Date: Mon, 9 Apr 2007 19:40:58 -0400
- Subject: GDB STL Memory Usage Issue
Hi,
I observed some strange behavior with the following system that I
would like to know more about:
I'm compiling a very memory intensive C++ application that uses STL
(hashmaps of lists). Every few seconds I erase() the entire hashmap
(and the lists). When I run the program standalone and examine the
memory usage using top, I see the total virtual memory of the program
grow (sometimes to 60+MB) before the erase call and after the erase
call drop down to a few MB - which is the behavior I would expect.
However, when I run the same program through GDB, the erase() does not
seem to have any effect and the virtual memory usage keeps on rising -
which I do not understand.
I am using GCC 4.0.3, GDB 6.4 and am compiling the program with
debugging information. I would like to understand the reasons for such
a behavior of my program under GDB.
Thanks in advance,
--
Ravi Ramaseshan
http://www.geocities.com/ramaseshan_ravi/
" Reality is only something we believe in strongly. "