https://sourceware.org/bugzilla/show_bug.cgi?id=22802
Bug ID: 22802
Summary: massive performance regression for `readelf -n`
Product: binutils
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: robert at ocallahan dot org
Target Milestone: ---
`readelf -n /usr/lib/debug/usr/lib64/libwebkit2gtk-4.0.so.37.13.10.debug` takes
0.006s in 2.29-6.fc27. It takes 58s in 2.29.51 (built from gdb-8.1-release).
Transcript:
[roc@glory code]$ /usr/bin/readelf --version
GNU readelf version 2.29-6.fc27
Copyright (C) 2017 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) any later version.
This program has absolutely no warranty.
[roc@glory code]$ time /usr/bin/readelf -n
/usr/lib/debug/usr/lib64/libwebkit2gtk-4.0.so.37.13.10.debug
Displaying notes found in: .note.gnu.build-id
Owner Data size Description
GNU 0x00000014 NT_GNU_BUILD_ID (unique build ID
bitstring)
Build ID: 0607995fe748bcac5e22ed63835154bcf58173cb
Displaying notes found in: .note.gnu.gold-version
Owner Data size Description
GNU 0x00000009 NT_GNU_GOLD_VERSION (gold version)
Version: gold 1.11
real 0m0.006s
user 0m0.001s
sys 0m0.001s
[roc@glory binutils-gdb]$ readelf --version
GNU readelf (GNU Binutils) 2.29.51
Copyright (C) 2018 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) any later version.
This program has absolutely no warranty.
[roc@glory binutils-gdb]$ time readelf -n
/usr/lib/debug/usr/lib64/libwebkit2gtk-4.0.so.37.13.10.debug
Displaying notes found in: .note.gnu.build-id
Owner Data size Description
GNU 0x00000014 NT_GNU_BUILD_ID (unique build ID
bitstring)
Build ID: 0607995fe748bcac5e22ed63835154bcf58173cb
Displaying notes found in: .note.gnu.gold-version
Owner Data size Description
GNU 0x00000009 NT_GNU_GOLD_VERSION (gold version)
Version: gold 1.11
real 0m57.550s
user 0m54.845s
sys 0m1.227s
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