From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-prs-return-11155-listarch-gdb-prs=sources.redhat.com@sourceware.org>
Received: (qmail 32613 invoked by alias); 22 Dec 2011 21:34:25 -0000
Received: (qmail 32444 invoked by uid 22791); 22 Dec 2011 21:34:24 -0000
X-SWARE-Spam-Status: No, hits=-2.8 required=5.0
	tests=ALL_TRUSTED,AWL,BAYES_00
X-Spam-Check-By: sourceware.org
Received: from localhost (HELO sourceware.org) (127.0.0.1)
    by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 22 Dec 2011 21:34:11 +0000
From: "ian at mahuron dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/12533] gdb consumes large memory when millions
 gdb.values are created
Date: Thu, 22 Dec 2011 21:34:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gdb
X-Bugzilla-Component: python
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: ian at mahuron dot org
X-Bugzilla-Status: RESOLVED
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: tromey at redhat dot com
X-Bugzilla-Target-Milestone: 7.5
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-12533-4717-kJ7ca74soN@http.sourceware.org/bugzilla/>
In-Reply-To: <bug-12533-4717@http.sourceware.org/bugzilla/>
References: <bug-12533-4717@http.sourceware.org/bugzilla/>
X-Bugzilla-URL: http://sourceware.org/bugzilla/
Auto-Submitted: auto-generated
Content-Type: text/plain; charset="UTF-8"
MIME-Version: 1.0
Mailing-List: contact gdb-prs-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Id: <gdb-prs.sourceware.org>
List-Subscribe: <mailto:gdb-prs-subscribe@sourceware.org>
List-Archive: <http://sourceware.org/ml/gdb-prs/>
List-Post: <mailto:gdb-prs@sourceware.org>
List-Help: <mailto:gdb-prs-help@sourceware.org>, <http://sourceware.org/lists.html#faqs>
Sender: gdb-prs-owner@sourceware.org
X-SW-Source: 2011-q4/txt/msg00566.txt.bz2

http://sourceware.org/bugzilla/show_bug.cgi?id=12533

--- Comment #5 from Ian Mahuron <ian at mahuron dot org> 2011-12-22 21:34:00 UTC ---
Tested 7.4.50.20111222-cvs.  gdb still leaks memory as reported in initial
problem description.

My test does something along the lines of:

buckets = gdb.newest_frame().read_var("buckets")
bucket_count = 2 ** 32

# iterate over all buckets
for i in range(0, bucket_count):
  llist = buckets[i]['llhead']
  # iterate over linked list for this bucket
  while llist:
    print llist.address
    llist = llist['next']['llnext']

GDB hits 1.2G in a matter of seconds.  This code shouldn't hold any refs so I'm
fairly confident it's still leaking.

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.