From: Jerin Jacob <jerinjacobk@gmail.com>
To: "Mattias Rönnblom" <mattias.ronnblom@ericsson.com>
Cc: David Marchand <david.marchand@redhat.com>,
Bruce Richardson <bruce.richardson@intel.com>,
Jerin Jacob Kollanukkaran <jerinj@marvell.com>,
"dev@dpdk.org" <dev@dpdk.org>,
Thomas Monjalon <thomas@monjalon.net>,
Ferruh Yigit <ferruh.yigit@intel.com>,
Andrew Rybchenko <arybchenko@solarflare.com>,
Ajit Khaparde <ajit.khaparde@broadcom.com>,
Qi Zhang <qi.z.zhang@intel.com>,
Xiaolong Ye <xiaolong.ye@intel.com>,
Raslan Darawsheh <rasland@mellanox.com>,
Maxime Coquelin <maxime.coquelin@redhat.com>,
Tiwei Bie <tiwei.bie@intel.com>,
Akhil Goyal <akhil.goyal@nxp.com>,
Luca Boccassi <bluca@debian.org>,
Kevin Traynor <ktraynor@redhat.com>,
"maintainers@dpdk.org" <maintainers@dpdk.org>,
John McNamara <john.mcnamara@intel.com>,
Marko Kovacevic <marko.kovacevic@intel.com>,
Ray Kinsella <mdr@ashroe.eu>, Aaron Conole <aconole@redhat.com>,
Michael Santana <maicolgabriel@hotmail.com>,
Harry van Haaren <harry.van.haaren@intel.com>,
Cristian Dumitrescu <cristian.dumitrescu@intel.com>,
Phil Yang <phil.yang@arm.com>, Joyce Kong <joyce.kong@arm.com>,
Jan Viktorin <viktorin@rehivetech.com>,
Gavin Hu <gavin.hu@arm.com>,
David Christensen <drc@linux.vnet.ibm.com>,
Konstantin Ananyev <konstantin.ananyev@intel.com>,
Anatoly Burakov <anatoly.burakov@intel.com>,
Harini Ramakrishnan <harini.ramakrishnan@microsoft.com>,
Omar Cardona <ocardona@microsoft.com>,
Anand Rawat <anand.rawat@intel.com>,
Olivier Matz <olivier.matz@6wind.com>,
Gage Eads <gage.eads@intel.com>,
Adrien Mazarguil <adrien.mazarguil@6wind.com>,
Nicolas Chautru <nicolas.chautru@intel.com>,
Declan Doherty <declan.doherty@intel.com>,
Fiona Trahe <fiona.trahe@intel.com>,
Ashish Gupta <ashishg@marvell.com>,
Erik Gabriel Carrillo <erik.g.carrillo@intel.com>,
Abhinandan Gujjar <abhinandan.gujjar@intel.com>,
Hemant Agrawal <hemant.agrawal@nxp.com>,
"Artem V. Andreev" <artem.andreev@oktetlabs.ru>,
Nithin Kumar Dabilpuram <ndabilpuram@marvell.com>,
Vamsi Krishna Attunuru <vattunuru@marvell.com>,
Rosen Xu <rosen.xu@intel.com>,
Sachin Saxena <sachin.saxena@nxp.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
Chas Williams <chas3@att.com>,
"John W. Linville" <linville@tuxdriver.com>,
Prasun Kapoor <pkapoor@marvell.com>,
Marcin Wojtas <mw@semihalf.com>,
Michal Krawczyk <mk@semihalf.com>,
Guy Tzalik <gtzalik@amazon.com>,
Evgeny Schemeilin <evgenys@amazon.com>,
Igor Chauskin <igorch@amazon.com>,
Ravi Kumar <ravi1.kumar@amd.com>,
Igor Russkikh <igor.russkikh@aquantia.com>,
Pavel Belous <pavel.belous@aquantia.com>,
Shepard Siegel <shepard.siegel@atomicrules.com>,
Ed Czeck <ed.czeck@atomicrules.com>,
John Miller <john.miller@atomicrules.com>,
Somnath Kotur <somnath.kotur@broadcom.com>,
Maciej Czekaj <mczekaj@marvell.com>,
Shijith Thotton <sthotton@marvell.com>,
Srisivasubramanian Srinivasan <srinivasan@marvell.com>,
Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>,
John Daley <johndale@cisco.com>,
Hyong Youb Kim <hyonkim@cisco.com>,
"Wei Hu (Xavier" <xavier.huwei@huawei.com>,
"Min Hu (Connor" <humin29@huawei.com>,
Yisen Zhuang <yisen.zhuang@huawei.com>,
Ziyang Xuan <xuanziyang2@huawei.com>,
Xiaoyun Wang <cloud.wangxiaoyun@huawei.com>,
Guoyang Zhou <zhouguoyang@huawei.com>,
Beilei Xing <beilei.xing@intel.com>,
Xiao Wang <xiao.w.wang@intel.com>,
Jingjing Wu <jingjing.wu@intel.com>,
Wenzhuo Lu <wenzhuo.lu@intel.com>,
Qiming Yang <qiming.yang@intel.com>,
Tomasz Duszynski <tdu@semihalf.com>,
Liron Himi <lironh@marvell.com>, Zyta Szpak <zr@semihalf.com>,
Kiran Kumar Kokkilagadda <kirankumark@marvell.com>,
Matan Azrad <matan@mellanox.com>,
Shahaf Shuler <shahafs@mellanox.com>,
Viacheslav Ovsiienko <viacheslavo@mellanox.com>,
"K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Jan Remes <remes@netcope.com>,
Heinrich Kuhn <heinrich.kuhn@netronome.com>,
Jan Gutter <jan.gutter@netronome.com>,
Gagandeep Singh <g.singh@nxp.com>,
Rasesh Mody <rmody@marvell.com>,
Shahed Shaikh <shshaikh@marvell.com>,
Yong Wang <yongwang@vmware.com>,
Zhihong Wang <zhihong.wang@intel.com>,
Steven Webster <steven.webster@windriver.com>,
Matt Peters <matt.peters@windriver.com>,
Keith Wiles <keith.wiles@intel.com>,
Tetsuya Mukawa <mtetsuyah@gmail.com>,
Jasvinder Singh <jasvinder.singh@intel.com>,
Jakub Grajciar <jgrajcia@cisco.com>,
Ruifeng Wang <ruifeng.wang@arm.com>,
Anoob Joseph <anoobj@marvell.com>,
Fan Zhang <roy.fan.zhang@intel.com>,
Pablo de Lara <pablo.de.lara.guarch@intel.com>,
John Griffin <john.griffin@intel.com>,
Deepak Kumar Jain <deepak.k.jain@intel.com>,
Michael Shamis <michaelsh@marvell.com>,
Nagadheeraj Rottela <rnagadheeraj@marvell.com>,
Srikanth Jampala <jsrikanth@marvell.com>,
Ankur Dwivedi <adwivedi@marvell.com>,
Jay Zhou <jianjay.zhou@huawei.com>, Lee Daly <lee.daly@intel.com>,
Sunila Sahu <ssahu@marvell.com>,
Nipun Gupta <nipun.gupta@nxp.com>,
Liang Ma <liang.j.ma@intel.com>,
Peter Mccarthy <peter.mccarthy@intel.com>,
Tianfei zhang <tianfei.zhang@intel.com>,
Satha Koteswara Rao Kottidi <skoteshwar@marvell.com>,
Xiaoyun Li <xiaoyun.li@intel.com>,
Bernard Iremonger <bernard.iremonger@intel.com>,
Vladimir Medvedkin <vladimir.medvedkin@intel.com>,
David Hunt <david.hunt@intel.com>,
Reshma Pattan <reshma.pattan@intel.com>,
Byron Marohn <byron.marohn@intel.com>,
Sameh Gobriel <sameh.gobriel@intel.com>,
Yipeng Wang <yipeng1.wang@intel.com>,
Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>,
Robert Sanford <rsanford@akamai.com>,
Kevin Laatz <kevin.laatz@intel.com>,
Maryam Tahhan <maryam.tahhan@intel.com>,
Ori Kam <orika@mellanox.com>,
Radu Nicolau <radu.nicolau@intel.com>,
Tomasz Kantecki <tomasz.kantecki@intel.com>,
Sunil Kumar Kori <skori@marvell.com>,
Pavan Nikhilesh Bhagavatula <pbhagavatula@marvell.com>,
Kirill Rybalchenko <kirill.rybalchenko@intel.com>,
"Kadam, Pallavi" <pallavi.kadam@intel.com>
Subject: Re: [dpdk-dev] [RFC] DPDK Trace support
Date: Fri, 17 Jan 2020 16:24:55 +0530 [thread overview]
Message-ID: <CALBAE1P-D--BNV5yMNeGa0AWTrwN=GHQRhMnbvteG0vtOnBB4g@mail.gmail.com> (raw)
In-Reply-To: <b4d9c246-b0eb-726c-abd5-8c303b630692@ericsson.com>
On Fri, Jan 17, 2020 at 4:00 PM Mattias Rönnblom
<mattias.ronnblom@ericsson.com> wrote:
>
> > LTTng kernel tracing only needs kmod support.
> > For the userspace tracing at minium following libraries are required.
> >
> > a) LTTng-UST
> > b) LTTng-tools
> > c) liburcu
> > d) libpopt-dev
>
> This "DPDK CTF trace emitter" would make DPDK interoperate with, but
> without any build-time dependencies to, LTTng. Correct?
Yes. Native CTF trace emitter without LTTng dependency.
>
> Do you have any idea of what the performance benefits one would receive
> from having something DPDK native, compared to just depending on LTTng UST?
I calibrated LTTng cost and pushed the test code to github[1].
I just started working on the DPDK native CTF emitter.
I am sure it will be less than LTTng as we can leverage hugepage, exploit
dpdk worker thread usage to avoid atomics and use per core variables,
avoid a lot function pointers in fast-path etc
I can share the exact overhead after the PoC.
I think, based on the performance we can decide one or another?
[1]
-------------------------- 8<----------------------------------
https://github.com/jerinjacobk/lttng-overhead
https://github.com/jerinjacobk/lttng-overhead/blob/master/README
On high-end x86, it comes around 236 cycles/~100ns @ 2.4GHz (See the
last line in the log(ZERO_ARG))
On arm64, it varies from 312 cycles to 1100 cycles(based on the class of CPU).
In short, Based on the "IPC capabilities", The cost would be around
100ns to 400ns
for single void trace(a trace without any argument)
-------------------------- 8<----------------------------------
>
> Would this work also include moving over the DPDK trace macros to using
> this new CTF trace emitter? If so, we would retain the current
> printf()-style pattern, or move to a more LTTng-native like approach,
> with trace event type declarations and binary-format trace events?
Yes. I am planning to add tracepoints across the DPDK source code.
The Fastpath stuff should be under conditional compilation.
My view is to keep the printf() pattern as is. Probably we can decide
the exact treatment later.
next prev parent reply other threads:[~2020-01-17 10:55 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-13 10:40 Jerin Jacob Kollanukkaran
2020-01-13 11:00 ` Ray Kinsella
2020-01-13 12:04 ` [dpdk-dev] [EXT] " Jerin Jacob Kollanukkaran
2020-01-18 15:14 ` [dpdk-dev] " dave
2020-01-20 16:51 ` Stephen Hemminger
2020-01-13 13:05 ` Bruce Richardson
2020-01-13 14:46 ` Jerin Jacob
2020-01-13 14:58 ` Bruce Richardson
2020-01-13 15:13 ` Jerin Jacob
2020-01-13 16:12 ` Bruce Richardson
2020-01-17 4:41 ` Jerin Jacob
2020-01-17 8:04 ` David Marchand
2020-01-17 9:52 ` Jerin Jacob
2020-01-17 10:30 ` Mattias Rönnblom
2020-01-17 10:54 ` Jerin Jacob [this message]
2020-02-15 10:21 ` Jerin Jacob
2020-02-17 9:35 ` Mattias Rönnblom
2020-02-17 10:23 ` Jerin Jacob
2020-01-17 10:43 ` David Marchand
2020-01-17 11:08 ` Jerin Jacob
2020-01-27 16:12 ` Aaron Conole
2020-01-27 17:23 ` Jerin Jacob
2020-01-20 4:48 Jerin Jacob Kollanukkaran
2020-01-20 12:08 ` Ray Kinsella
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='CALBAE1P-D--BNV5yMNeGa0AWTrwN=GHQRhMnbvteG0vtOnBB4g@mail.gmail.com' \
--to=jerinjacobk@gmail.com \
--cc=abhinandan.gujjar@intel.com \
--cc=aconole@redhat.com \
--cc=adrien.mazarguil@6wind.com \
--cc=adwivedi@marvell.com \
--cc=ajit.khaparde@broadcom.com \
--cc=akhil.goyal@nxp.com \
--cc=anand.rawat@intel.com \
--cc=anatoly.burakov@intel.com \
--cc=anoobj@marvell.com \
--cc=artem.andreev@oktetlabs.ru \
--cc=arybchenko@solarflare.com \
--cc=ashishg@marvell.com \
--cc=beilei.xing@intel.com \
--cc=bernard.iremonger@intel.com \
--cc=bluca@debian.org \
--cc=bruce.richardson@intel.com \
--cc=byron.marohn@intel.com \
--cc=chas3@att.com \
--cc=cloud.wangxiaoyun@huawei.com \
--cc=cristian.dumitrescu@intel.com \
--cc=david.hunt@intel.com \
--cc=david.marchand@redhat.com \
--cc=declan.doherty@intel.com \
--cc=deepak.k.jain@intel.com \
--cc=dev@dpdk.org \
--cc=drc@linux.vnet.ibm.com \
--cc=ed.czeck@atomicrules.com \
--cc=erik.g.carrillo@intel.com \
--cc=evgenys@amazon.com \
--cc=ferruh.yigit@intel.com \
--cc=fiona.trahe@intel.com \
--cc=g.singh@nxp.com \
--cc=gage.eads@intel.com \
--cc=gavin.hu@arm.com \
--cc=gtzalik@amazon.com \
--cc=haiyangz@microsoft.com \
--cc=harini.ramakrishnan@microsoft.com \
--cc=harry.van.haaren@intel.com \
--cc=heinrich.kuhn@netronome.com \
--cc=hemant.agrawal@nxp.com \
--cc=honnappa.nagarahalli@arm.com \
--cc=humin29@huawei.com \
--cc=hyonkim@cisco.com \
--cc=igor.russkikh@aquantia.com \
--cc=igorch@amazon.com \
--cc=jan.gutter@netronome.com \
--cc=jasvinder.singh@intel.com \
--cc=jerinj@marvell.com \
--cc=jgrajcia@cisco.com \
--cc=jianjay.zhou@huawei.com \
--cc=jingjing.wu@intel.com \
--cc=john.griffin@intel.com \
--cc=john.mcnamara@intel.com \
--cc=john.miller@atomicrules.com \
--cc=johndale@cisco.com \
--cc=joyce.kong@arm.com \
--cc=jsrikanth@marvell.com \
--cc=keith.wiles@intel.com \
--cc=kevin.laatz@intel.com \
--cc=kirankumark@marvell.com \
--cc=kirill.rybalchenko@intel.com \
--cc=konstantin.ananyev@intel.com \
--cc=ktraynor@redhat.com \
--cc=kys@microsoft.com \
--cc=lee.daly@intel.com \
--cc=liang.j.ma@intel.com \
--cc=linville@tuxdriver.com \
--cc=lironh@marvell.com \
--cc=maicolgabriel@hotmail.com \
--cc=maintainers@dpdk.org \
--cc=marko.kovacevic@intel.com \
--cc=maryam.tahhan@intel.com \
--cc=matan@mellanox.com \
--cc=matt.peters@windriver.com \
--cc=mattias.ronnblom@ericsson.com \
--cc=maxime.coquelin@redhat.com \
--cc=mczekaj@marvell.com \
--cc=mdr@ashroe.eu \
--cc=michaelsh@marvell.com \
--cc=mk@semihalf.com \
--cc=mtetsuyah@gmail.com \
--cc=mw@semihalf.com \
--cc=ndabilpuram@marvell.com \
--cc=nicolas.chautru@intel.com \
--cc=nipun.gupta@nxp.com \
--cc=ocardona@microsoft.com \
--cc=olivier.matz@6wind.com \
--cc=orika@mellanox.com \
--cc=pablo.de.lara.guarch@intel.com \
--cc=pallavi.kadam@intel.com \
--cc=pavel.belous@aquantia.com \
--cc=pbhagavatula@marvell.com \
--cc=peter.mccarthy@intel.com \
--cc=phil.yang@arm.com \
--cc=pkapoor@marvell.com \
--cc=qi.z.zhang@intel.com \
--cc=qiming.yang@intel.com \
--cc=radu.nicolau@intel.com \
--cc=rahul.lakkireddy@chelsio.com \
--cc=rasland@mellanox.com \
--cc=ravi1.kumar@amd.com \
--cc=remes@netcope.com \
--cc=reshma.pattan@intel.com \
--cc=rmody@marvell.com \
--cc=rnagadheeraj@marvell.com \
--cc=rosen.xu@intel.com \
--cc=roy.fan.zhang@intel.com \
--cc=rsanford@akamai.com \
--cc=ruifeng.wang@arm.com \
--cc=sachin.saxena@nxp.com \
--cc=sameh.gobriel@intel.com \
--cc=shahafs@mellanox.com \
--cc=shepard.siegel@atomicrules.com \
--cc=shshaikh@marvell.com \
--cc=skori@marvell.com \
--cc=skoteshwar@marvell.com \
--cc=somnath.kotur@broadcom.com \
--cc=srinivasan@marvell.com \
--cc=ssahu@marvell.com \
--cc=steven.webster@windriver.com \
--cc=sthemmin@microsoft.com \
--cc=sthotton@marvell.com \
--cc=tdu@semihalf.com \
--cc=thomas@monjalon.net \
--cc=tianfei.zhang@intel.com \
--cc=tiwei.bie@intel.com \
--cc=tomasz.kantecki@intel.com \
--cc=vattunuru@marvell.com \
--cc=viacheslavo@mellanox.com \
--cc=viktorin@rehivetech.com \
--cc=vladimir.medvedkin@intel.com \
--cc=wenzhuo.lu@intel.com \
--cc=xavier.huwei@huawei.com \
--cc=xiao.w.wang@intel.com \
--cc=xiaolong.ye@intel.com \
--cc=xiaoyun.li@intel.com \
--cc=xuanziyang2@huawei.com \
--cc=yipeng1.wang@intel.com \
--cc=yisen.zhuang@huawei.com \
--cc=yongwang@vmware.com \
--cc=zhihong.wang@intel.com \
--cc=zhouguoyang@huawei.com \
--cc=zr@semihalf.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).