From: "George Spelvin" <linux@horizon.com>
To: linux-kernel@vger.kernel.org
Cc: linux@horizon.com
Subject: Re: [PATCH RFC 2/2] [x86] Optimize copy_page by re-arranging instruction sequence and saving register
Date: 12 Oct 2012 17:02:57 -0400 [thread overview]
Message-ID: <20121012210257.11451.qmail@science.horizon.com> (raw)
Here are some Phenom results for that benchmark. The average time
increases from 700 to 760 cycles (+8.6%).
vendor_id : AuthenticAMD
cpu family : 16
model : 2
model name : AMD Phenom(tm) 9850 Quad-Core Processor
stepping : 3
microcode : 0x1000083
cpu MHz : 2500.210
cache size : 512 KB
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs hw_pstate npt lbrv svm_lock
bogomips : 5000.42
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
copy_page_org copy_page_new
TPT: Len 4096, alignment 0/ 0: 678 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
copy_page_org copy_page_new
TPT: Len 4096, alignment 0/ 0: 667 760
TPT: Len 4096, alignment 0/ 0: 673 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
copy_page_org copy_page_new
TPT: Len 4096, alignment 0/ 0: 667 760
TPT: Len 4096, alignment 0/ 0: 673 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
copy_page_org copy_page_new
TPT: Len 4096, alignment 0/ 0: 671 760
TPT: Len 4096, alignment 0/ 0: 673 760
TPT: Len 4096, alignment 0/ 0: 671 760
TPT: Len 4096, alignment 0/ 0: 709 760
TPT: Len 4096, alignment 0/ 0: 708 760
copy_page_org copy_page_new
TPT: Len 4096, alignment 0/ 0: 667 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
copy_page_org copy_page_new
TPT: Len 4096, alignment 0/ 0: 671 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
copy_page_org copy_page_new
TPT: Len 4096, alignment 0/ 0: 678 760
TPT: Len 4096, alignment 0/ 0: 709 758
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 709 759
TPT: Len 4096, alignment 0/ 0: 710 760
copy_page_org copy_page_new
TPT: Len 4096, alignment 0/ 0: 680 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
copy_page_org copy_page_new
TPT: Len 4096, alignment 0/ 0: 667 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 709 760
TPT: Len 4096, alignment 0/ 0: 709 759
TPT: Len 4096, alignment 0/ 0: 710 760
copy_page_org copy_page_new
TPT: Len 4096, alignment 0/ 0: 678 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
TPT: Len 4096, alignment 0/ 0: 710 760
next reply other threads:[~2012-10-12 21:02 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-12 21:02 George Spelvin [this message]
2012-10-12 23:17 ` [PATCH RFC 2/2] [x86] Optimize copy_page by re-arranging instruction sequence and saving register Borislav Petkov
-- strict thread matches above, loose matches on Subject: below --
2012-10-11 12:29 ling.ma
2012-10-11 13:40 ` Andi Kleen
2012-10-12 3:10 ` Ma, Ling
2012-10-12 13:35 ` Andi Kleen
2012-10-12 14:54 ` Ma, Ling
2012-10-12 15:14 ` Andi Kleen
2012-10-11 14:35 ` Konrad Rzeszutek Wilk
2012-10-12 3:37 ` Ma, Ling
2012-10-12 6:18 ` Borislav Petkov
2012-10-12 9:07 ` Ma, Ling
2012-10-12 18:04 ` Borislav Petkov
2012-10-14 10:58 ` Borislav Petkov
2012-10-15 5:00 ` Ma, Ling
2012-10-15 5:13 ` George Spelvin
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=20121012210257.11451.qmail@science.horizon.com \
--to=linux@horizon.com \
--cc=linux-kernel@vger.kernel.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