From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 30888 invoked by alias); 12 May 2011 16:34:28 -0000 Received: (qmail 30800 invoked by uid 22791); 12 May 2011 16:34:27 -0000 X-SWARE-Spam-Status: No, hits=-2.7 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 12 May 2011 16:34:14 +0000 From: "andi-gcc at firstfloor dot org" To: gcc-bugs@gcc.gnu.org Subject: [Bug lto/48978] excessive hash table allocation for large lto build X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: lto X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: andi-gcc at firstfloor dot org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Date: Thu, 12 May 2011 16:39:00 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2011-05/txt/msg01042.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48978 --- Comment #2 from Andi Kleen 2011-05-12 16:16:19 UTC --- I will try. BTW this was a much larger test case (allyesconfig), the tarball I sent you is a much more limited config. Normally noone uses allyesconfig kernels (they barely boot), but they are a good stress tester for the compiler. Still I suspect the hash table expansion algorithms are not optimal. If you're already in the GB range you shouldn't be doubling anymore...