From: Yerden Zhumabekov <e_zhumabekov@sts.kz>
To: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>,
"Richardson, Bruce" <bruce.richardson@intel.com>
Cc: "Verkamp, Daniel" <daniel.verkamp@intel.com>,
"dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v2] ring: use aligned memzone allocation
Date: Fri, 9 Jun 2017 18:47:43 +0600 [thread overview]
Message-ID: <6908e71a-c849-83d3-e86d-745acf9f9491@sts.kz> (raw)
In-Reply-To: <2601191342CEEE43887BDE71AB9772583FB0644D@IRSMSX109.ger.corp.intel.com>
On 06.06.2017 19:19, Ananyev, Konstantin wrote:
>
>>>> Maybe there is some deeper reason for the >= 128-byte alignment logic in rte_ring.h?
>>> Might be, would be good to hear opinion the author of that change.
>> It gives improved performance for core-2-core transfer.
> You mean empty cache-line(s) after prod/cons, correct?
> That's ok but why we can't keep them and whole rte_ring aligned on cache-line boundaries?
> Something like that:
> struct rte_ring {
> ...
> struct rte_ring_headtail prod __rte_cache_aligned;
> EMPTY_CACHE_LINE __rte_cache_aligned;
> struct rte_ring_headtail cons __rte_cache_aligned;
> EMPTY_CACHE_LINE __rte_cache_aligned;
> };
>
> Konstantin
>
I'm curious, can anyone explain, how does it actually affect
performance? Maybe we can utilize it application code?
next prev parent reply other threads:[~2017-06-09 12:47 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-02 20:03 [dpdk-dev] [PATCH] " Daniel Verkamp
2017-06-02 20:12 ` [dpdk-dev] [PATCH v2] " Daniel Verkamp
2017-06-02 20:51 ` Ananyev, Konstantin
2017-06-02 22:24 ` Verkamp, Daniel
2017-06-03 10:00 ` Ananyev, Konstantin
2017-06-05 16:21 ` Verkamp, Daniel
2017-06-06 9:59 ` Ananyev, Konstantin
2017-06-06 12:42 ` Bruce Richardson
2017-06-06 13:19 ` Ananyev, Konstantin
2017-06-06 14:56 ` Bruce Richardson
2017-06-08 12:45 ` Olivier Matz
2017-06-08 13:20 ` Bruce Richardson
2017-06-08 14:05 ` Olivier Matz
2017-06-08 14:11 ` Bruce Richardson
2017-06-08 14:50 ` Ananyev, Konstantin
2017-06-08 15:24 ` Bruce Richardson
2017-06-08 15:35 ` Ananyev, Konstantin
2017-06-08 16:03 ` Bruce Richardson
2017-06-08 16:12 ` Ananyev, Konstantin
2017-06-08 16:20 ` Richardson, Bruce
2017-06-08 16:42 ` Ananyev, Konstantin
2017-06-09 9:02 ` Bruce Richardson
2017-06-12 9:02 ` Olivier Matz
2017-06-12 9:56 ` Bruce Richardson
2017-06-30 11:35 ` Olivier Matz
2017-06-09 12:47 ` Yerden Zhumabekov [this message]
2017-06-09 17:16 ` Stephen Hemminger
2017-06-09 17:28 ` Jerin Jacob
2017-06-10 8:16 ` Ananyev, Konstantin
2017-06-12 3:07 ` Jerin Jacob
2017-06-12 10:18 ` Ananyev, Konstantin
2017-06-12 10:34 ` Jerin Jacob
2017-06-12 11:09 ` Bruce Richardson
2017-06-12 11:41 ` Jerin Jacob
2017-06-12 12:17 ` Ananyev, Konstantin
2017-06-12 12:42 ` Jerin Jacob
2017-06-12 12:51 ` Ananyev, Konstantin
2017-06-12 13:06 ` Bruce Richardson
2017-06-12 13:20 ` Jerin Jacob
2017-06-30 11:36 ` Olivier Matz
2017-07-01 11:14 ` Thomas Monjalon
2017-07-01 11:25 ` Thomas Monjalon
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=6908e71a-c849-83d3-e86d-745acf9f9491@sts.kz \
--to=e_zhumabekov@sts.kz \
--cc=bruce.richardson@intel.com \
--cc=daniel.verkamp@intel.com \
--cc=dev@dpdk.org \
--cc=konstantin.ananyev@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).