From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <sourceware-bugzilla@sourceware.org>
Received: by sourceware.org (Postfix, from userid 48)
 id ABEE03839C56; Fri, 13 May 2022 20:56:35 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org ABEE03839C56
From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/29105] new DWARF reader still slow
Date: Fri, 13 May 2022 20:56:35 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gdb
X-Bugzilla-Component: symtab
X-Bugzilla-Version: HEAD
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: tromey at sourceware dot org
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: tromey at sourceware dot org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-29105-4717-tqHHWIrkWd@http.sourceware.org/bugzilla/>
In-Reply-To: <bug-29105-4717@http.sourceware.org/bugzilla/>
References: <bug-29105-4717@http.sourceware.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://sourceware.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: gdb-prs@sourceware.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gdb-prs mailing list <gdb-prs.sourceware.org>
List-Unsubscribe: <https://sourceware.org/mailman/options/gdb-prs>,
 <mailto:gdb-prs-request@sourceware.org?subject=unsubscribe>
List-Archive: <https://sourceware.org/pipermail/gdb-prs/>
List-Help: <mailto:gdb-prs-request@sourceware.org?subject=help>
List-Subscribe: <https://sourceware.org/mailman/listinfo/gdb-prs>,
 <mailto:gdb-prs-request@sourceware.org?subject=subscribe>
X-List-Received-Date: Fri, 13 May 2022 20:56:35 -0000

https://sourceware.org/bugzilla/show_bug.cgi?id=3D29105

--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
I have a patch to "shard" the index.
The idea is to do each finalization step locally in a given
index, and never combine them into the cooked vector.

This seems better for performance, at least from a
time-to-first-prompt perspective.  And, the memory overhead
doesn't seem so bad, either.

Before:

(gdb) file /tmp/gdb
2022-05-13 14:54:41.981 - command started
Reading symbols from /tmp/gdb...
2022-05-13 14:54:42.391 - command finished
Command execution time: 2.202096 (cpu), 0.410121 (wall)
Space used: 10010624 (+6594560 for this command)


After:

(gdb) file /tmp/gdb
2022-05-13 14:54:19.907 - command started
Reading symbols from /tmp/gdb...
2022-05-13 14:54:20.125 - command finished
Command execution time: 1.025581 (cpu), 0.218469 (wall)
Space used: 10014720 (+6598656 for this command)

--=20
You are receiving this mail because:
You are on the CC list for the bug.=