From: George Dunlap <george.dunlap@eu.citrix.com>
To: xen-devel@lists.xensource.com
Cc: george.dunlap@eu.citrix.com
Subject: [PATCH 4 of 8] xenalyze: Enable -O2 optimization level
Date: Thu, 26 Jan 2012 17:21:01 +0000 [thread overview]
Message-ID: <0663e3e8f69d4af558eb.1327598461@elijah> (raw)
In-Reply-To: <patchbomb.1327598457@elijah>
-O3 is marginally better, but the automatic inlining
obscures where the guest is spending its time.
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
diff -r 6772e9e46ab2 -r 0663e3e8f69d Makefile
--- a/Makefile Thu Jan 26 17:16:35 2012 +0000
+++ b/Makefile Thu Jan 26 17:16:59 2012 +0000
@@ -1,6 +1,6 @@
CC = gcc
-CFLAGS += -g
+CFLAGS += -g -O2
CFLAGS += -fno-strict-aliasing
CFLAGS += -std=gnu99
CFLAGS += -Wall -Wstrict-prototypes
next prev parent reply other threads:[~2012-01-26 17:21 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-26 17:20 [PATCH 0 of 8] xenalyze: Optimizations George Dunlap
2012-01-26 17:20 ` [PATCH 1 of 8] xenalyze: Improve record-sorting algorithm George Dunlap
2012-01-26 17:20 ` [PATCH 2 of 8] xenalyze: Remove spurious dump_header construction George Dunlap
2012-01-26 17:21 ` [PATCH 3 of 8] xenalyze: Remove --dump-cooked George Dunlap
2012-01-26 17:21 ` George Dunlap [this message]
2012-01-26 17:21 ` [PATCH 5 of 8] xenalyze: Rework math to remove two 64-bit divisions George Dunlap
2012-01-26 17:21 ` [PATCH 6 of 8] xenalyze: Eliminate unnecessary cycles_to_time calculation George Dunlap
2012-01-26 17:21 ` [PATCH 7 of 8] xenalyze: Introduce more efficient read mechanism George Dunlap
2012-01-26 17:21 ` [PATCH 8 of 8] xenalyze: Get rid of redundant hvm dump_header George Dunlap
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=0663e3e8f69d4af558eb.1327598461@elijah \
--to=george.dunlap@eu.citrix.com \
--cc=xen-devel@lists.xensource.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).