From: Thomas Huth <1895703@bugs.launchpad.net>
To: qemu-devel@nongnu.org
Subject: [Bug 1895703] Re: performance degradation in tcg since Meson switch
Date: Thu, 10 Dec 2020 09:16:21 -0000 [thread overview]
Message-ID: <160759178192.11272.16267605903393682011.malone@wampee.canonical.com> (raw)
In-Reply-To: 160018860889.17103.9156462398304890013.malonedeb@soybean.canonical.com
Released with QEMU v5.2.0.
** Changed in: qemu
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1895703
Title:
performance degradation in tcg since Meson switch
Status in QEMU:
Fix Released
Bug description:
The buildsys conversion to Meson (1d806cef0e3..7fd51e68c34)
introduced a degradation in performance in some TCG targets:
--------------------------------------------------------
Test Program: matmult_double
--------------------------------------------------------
Target Instructions Previous Latest
1d806cef 7fd51e68
---------- -------------------- ---------- ----------
alpha 3 233 957 639 ----- +7.472%
m68k 3 919 110 506 ----- +18.433%
--------------------------------------------------------
Original report from Ahmed Karaman with further testing done
by Aleksandar Markovic:
https://www.mail-archive.com/qemu-devel@nongnu.org/msg740279.html
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prev parent reply other threads:[~2020-12-10 9:39 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-15 16:50 [Bug 1895703] [NEW] performance degradation in tcg since Meson switch Philippe Mathieu-Daudé
2020-09-16 11:11 ` [Bug 1895703] " Paolo Bonzini
2020-09-17 17:50 ` Ahmed Karaman
2020-09-18 15:38 ` Paolo Bonzini
2020-09-18 16:02 ` Peter Maydell
2020-09-18 17:07 ` Paolo Bonzini
2020-09-18 23:16 ` Paolo Bonzini
2020-11-21 23:44 ` Peter Maydell
2020-12-10 9:16 ` Thomas Huth [this message]
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