From: Richard Henderson <rth@twiddle.net>
To: "Emilio G. Cota" <cota@braap.org>
Cc: qemu-trivial <qemu-trivial@nongnu.org>,
"Stefan Weil" <sw@weilnetz.de>,
"Alex Bennée" <alex.bennee@linaro.org>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-trivial] [Qemu-devel] [PATCH] tcg: optimise memory layout of TCGTemp
Date: Sun, 29 Mar 2015 14:52:42 -0700 [thread overview]
Message-ID: <5518742e.451f460a.1d9b.66ce@mx.google.com> (raw)
On Mar 27, 2015 14:09, "Emilio G. Cota" <cota@braap.org> wrote:
>
> On Fri, Mar 27, 2015 at 09:55:03 +0000, Alex Bennée wrote:
> > Have you been able to measure any performance improvement with these new
> > structures? In theory, if aligned with cache lines, performance should
> > improve but real numbers would be nice.
>
> I haven't benchmarked anything, which makes me very uneasy. All
> I've checked is that the system boots, and FWIW I appreciate no
> difference in boot time.
No decrease in boot time is good. We /know/ we're saving memory, after all.
>
> Is there a benchmark suite to test TCG changes?
No, sorry.
r~
WARNING: multiple messages have this Message-ID (diff)
From: Richard Henderson <rth@twiddle.net>
To: "Emilio G. Cota" <cota@braap.org>
Cc: qemu-trivial <qemu-trivial@nongnu.org>,
"Stefan Weil" <sw@weilnetz.de>,
"Alex Bennée" <alex.bennee@linaro.org>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] tcg: optimise memory layout of TCGTemp
Date: Sun, 29 Mar 2015 14:52:42 -0700 [thread overview]
Message-ID: <5518742e.451f460a.1d9b.66ce@mx.google.com> (raw)
On Mar 27, 2015 14:09, "Emilio G. Cota" <cota@braap.org> wrote:
>
> On Fri, Mar 27, 2015 at 09:55:03 +0000, Alex Bennée wrote:
> > Have you been able to measure any performance improvement with these new
> > structures? In theory, if aligned with cache lines, performance should
> > improve but real numbers would be nice.
>
> I haven't benchmarked anything, which makes me very uneasy. All
> I've checked is that the system boots, and FWIW I appreciate no
> difference in boot time.
No decrease in boot time is good. We /know/ we're saving memory, after all.
>
> Is there a benchmark suite to test TCG changes?
No, sorry.
r~
next reply other threads:[~2015-03-29 21:52 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-29 21:52 Richard Henderson [this message]
2015-03-29 21:52 ` [Qemu-devel] [PATCH] tcg: optimise memory layout of TCGTemp Richard Henderson
2015-03-30 5:33 ` [Qemu-trivial] " Stefan Weil
2015-03-30 5:33 ` Stefan Weil
2015-03-30 5:43 ` [Qemu-trivial] " Stefan Weil
2015-03-30 5:43 ` Stefan Weil
2015-04-03 0:07 ` [Qemu-trivial] [PATCH v2] " Emilio G. Cota
2015-04-03 0:07 ` [Qemu-devel] " Emilio G. Cota
2015-04-03 8:13 ` [Qemu-trivial] " Stefan Weil
2015-04-03 8:13 ` [Qemu-devel] " Stefan Weil
2015-04-03 14:17 ` [Qemu-trivial] " Richard Henderson
2015-04-03 14:17 ` [Qemu-devel] " Richard Henderson
2015-04-07 14:59 ` [Qemu-trivial] " Alex Bennée
2015-04-07 14:59 ` [Qemu-devel] " Alex Bennée
-- strict thread matches above, loose matches on Subject: below --
2015-03-27 14:58 [Qemu-trivial] [PATCH] " Richard Henderson
2015-03-24 1:07 [Qemu-trivial] [Qemu-devel] [PATCH] tcg: pack TCGTemp to reduce size by 8 bytes Richard Henderson
2015-03-25 19:50 ` [Qemu-trivial] [PATCH] tcg: optimise memory layout of TCGTemp Emilio G. Cota
2015-03-27 9:55 ` [Qemu-trivial] [Qemu-devel] " Alex Bennée
2015-03-27 21:09 ` Emilio G. Cota
2015-03-30 9:55 ` Laurent Desnogues
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