From: Richard Henderson <richard.henderson@linaro.org>
To: Cleber Rosa <crosa@redhat.com>,
"qemu-devel@nongnu.org Developers" <qemu-devel@nongnu.org>,
Peter Maydell <peter.maydell@linaro.org>
Cc: "Alex Bennée" <alex.bennee@linaro.org>, qemu-ppc@nongnu.org
Subject: Re: [Qemu-devel] 2x-3x tcg performance regression on ppc64 (maybe others)
Date: Fri, 1 Feb 2019 16:09:57 -0800 [thread overview]
Message-ID: <c0ebd2ff-3787-0f83-ad55-86baa3bcc8b0@linaro.org> (raw)
In-Reply-To: <ae28cefe-84fb-6c4e-0452-55b717726b2b@redhat.com>
On 2/1/19 1:53 PM, Cleber Rosa wrote:
> Getting straight to the point, this is the ppc64 "boot linux console"
> test, running 10 times, on top my latest rebase (e8977901b, that
> includes f7b78602f).
>
> (01/10) boot_linux_console.py:BootLinuxConsole.test_ppc64_pseries: PASS
> (63.07 s)
...
> Then, with f7b78602f reverted:
>
> (01/10) boot_linux_console.py:BootLinuxConsole.test_ppc64_pseries: PASS
> (20.54 s)
This suggests that the cluster id added in that patch is perhaps uninitialized
or set incorrectly, so that we are spending much more time in code generation
than we should.
r~
next prev parent reply other threads:[~2019-02-02 0:10 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-01 21:53 [Qemu-devel] 2x-3x tcg performance regression on ppc64 (maybe others) Cleber Rosa
2019-02-02 0:09 ` Richard Henderson [this message]
2019-02-05 8:37 ` [Qemu-devel] [Qemu-ppc] " Howard Spoelstra
2019-02-05 13:45 ` Peter Maydell
2019-02-05 14:47 ` Philippe Mathieu-Daudé
2019-02-05 15:08 ` Peter Maydell
2019-02-05 15:11 ` Philippe Mathieu-Daudé
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