From: Evanzhang <Evanzhang@archeros.com>
To: qemu-devel@nongnu.org
Cc: mst@redhat.com, pbonzini@redhat.com, Evanzhang <Evanzhang@archeros.com>
Subject: [PATCH v1] rtc/mc146818rtc: improve rtc performance
Date: Mon, 24 Jul 2023 16:54:21 +0800 [thread overview]
Message-ID: <cover.1690188072.git.Evanzhang@archeros.com> (raw)
1.hw/rtc/mc146818rtc.c:48
open #define DEBUG_COALESCEDOD
2.create win7 4u 4g vm
3.Play 1080p video full screen
4.observe qemu log message
DPRINTF_C("cmos: coalesced irqs decreased to %d\n",
s->irq_coalesced);
4.perf kvm stat record -a -p $(pidof qemu-kvm) sleep 600
perf kvm stat report --event=vmexit
5.record EXTERNAL_INTERRUPT
Evanzhang (1):
rtc/mc146818rtc: improve rtc performance
hw/rtc/mc146818rtc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--
2.9.5
next reply other threads:[~2023-07-24 14:01 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-24 8:54 Evanzhang [this message]
2023-07-24 8:54 ` [PATCH v1] rtc/mc146818rtc: improve rtc performance Evanzhang
2023-09-25 21:33 ` Michael S. Tsirkin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=cover.1690188072.git.Evanzhang@archeros.com \
--to=evanzhang@archeros.com \
--cc=mst@redhat.com \
--cc=pbonzini@redhat.com \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).