From: Liang Li <liang.z.li@intel.com>
To: qemu-devel@nongnu.org
Cc: amit.shah@redhat.com, pbonzini@redhat.com,
yang.z.zhang@intel.com, Liang Li <liang.z.li@intel.com>,
quintela@redhat.com
Subject: [Qemu-devel] [PATCH 0/2] Optimization with AVX2 instruction
Date: Fri, 28 Aug 2015 16:54:11 +0800 [thread overview]
Message-ID: <1440752053-16961-1-git-send-email-liang.z.li@intel.com> (raw)
The buffer_find_nonzero_offset() will be called to check the zero page
during live migration, it's a hot function. buffer_find_nonzero_offset()
has already been optimized with SSE2 instructions, for platform that
supports AVX2, we can optimize this function with AVX2 instructions and
achieve about 25% performance gain.
Liang Li (2):
cutils: add the AVX2 optimization
configure: add --enable-avx2 option
configure | 16 ++++++++++++++++
include/qemu-common.h | 7 +++++++
2 files changed, 23 insertions(+)
--
1.9.1
next reply other threads:[~2015-08-28 8:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-28 8:54 Liang Li [this message]
2015-08-28 8:54 ` [Qemu-devel] [PATCH 1/2] cutils: add the AVX2 optimization Liang Li
2015-08-28 8:54 ` [Qemu-devel] [PATCH 2/2] configure: add --enable-avx2 option Liang Li
2015-09-02 5:40 ` [Qemu-devel] [PATCH 0/2] Optimization with AVX2 instruction Amit Shah
2015-09-06 14:43 ` Paolo Bonzini
2015-09-08 6:16 ` Li, Liang Z
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=1440752053-16961-1-git-send-email-liang.z.li@intel.com \
--to=liang.z.li@intel.com \
--cc=amit.shah@redhat.com \
--cc=pbonzini@redhat.com \
--cc=qemu-devel@nongnu.org \
--cc=quintela@redhat.com \
--cc=yang.z.zhang@intel.com \
/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).