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 94175393D026; Wed,  3 Mar 2021 09:12:28 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 94175393D026
From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: dwz@sourceware.org
Subject: [Bug default/25291] create_import_tree phase 2 slowness
Date: Wed, 03 Mar 2021 09:12:28 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: dwz
X-Bugzilla-Component: default
X-Bugzilla-Version: unspecified
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: enhancement
X-Bugzilla-Who: vries at gcc dot gnu.org
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: nobody at sourceware dot org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-25291-11298-V89CWEwBSl@http.sourceware.org/bugzilla/>
In-Reply-To: <bug-25291-11298@http.sourceware.org/bugzilla/>
References: <bug-25291-11298@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: dwz@sourceware.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Dwz mailing list <dwz.sourceware.org>
List-Unsubscribe: <https://sourceware.org/mailman/options/dwz>,
 <mailto:dwz-request@sourceware.org?subject=unsubscribe>
List-Archive: <https://sourceware.org/pipermail/dwz/>
List-Help: <mailto:dwz-request@sourceware.org?subject=help>
List-Subscribe: <https://sourceware.org/mailman/listinfo/dwz>,
 <mailto:dwz-request@sourceware.org?subject=subscribe>
X-List-Received-Date: Wed, 03 Mar 2021 09:12:28 -0000

https://sourceware.org/bugzilla/show_bug.cgi?id=3D25291

--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
The most pragmatic way to handle this is --devel-gen-cu --devel-uni-lang. L=
ess
imports generated, less scope for create_import_tree.

Consider f.i. this log file for file debug/Checker.so.debug:
...
+ ../measure/time.sh ./dwz debug/Checker.so.debug -o debug/Checker.so.debug=
.0.z
-lnone -Lnone --no-odr
maxmem: 5913264
real: 70.78
user: 65.74
system: 5.01
+ ../measure/time.sh ./dwz debug/Checker.so.debug -o debug/Checker.so.debug=
.1.z
-lnone -Lnone --odr --odr-mode=3Dlink
maxmem: 6091880
real: 104.91
user: 100.47
system: 4.39
+ ../measure/time.sh ./dwz debug/Checker.so.debug -o debug/Checker.so.debug=
.2.z
-lnone -Lnone --odr --odr-mode=3Dlink --devel-uni-lang --devel-gen-cu
maxmem: 6069780
real: 83.50
user: 79.32
system: 4.17
+ ../measure/diff.sh debug/Checker.so.debug debug/Checker.so.debug.0.z
.debug_info      red: .01%      542547271  542518778
.debug_abbrev    red: .11%      5277543  5271927
.debug_str       red: 0%        63361040  63361040
total            red: .01%      611185854 611151745
+ ../measure/diff.sh debug/Checker.so.debug debug/Checker.so.debug.1.z
.debug_info      red: 32.82%    542547271  364493736
.debug_abbrev    red: -9.44%    5277543  5775931
.debug_str       red: 0%        63361040  63361040
total            red: 29.06%    611185854 433630707
+ ../measure/diff.sh debug/Checker.so.debug debug/Checker.so.debug.2.z
.debug_info      red: 33.00%    542547271  363553611
.debug_abbrev    red: -9.12%    5277543  5759093
.debug_str       red: 0%        63361040  63361040
total            red: 29.21%    611185854 432673744
...

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