From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mathieu Desnoyers Subject: Re: =?utf-8?b?5Zue5aSNOlJlOiAg5Zue5aSNOlJlOiAgUHJvcyBh?= =?utf-8?q?nd_Cons_of_LTTng?= Date: Thu, 25 Jul 2019 11:48:32 -0400 (EDT) Message-ID: <438504875.11742.1564069712337.JavaMail.zimbra__28558.2121390448$1564069732$gmane$org@efficios.com> References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2730114321318119752==" Return-path: Received: from mail.efficios.com (mail.efficios.com [167.114.142.138]) by lists.lttng.org (Postfix) with ESMTPS id 45vc7p0xWBz1HJW for ; Thu, 25 Jul 2019 11:48:38 -0400 (EDT) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: lttng-dev-bounces@lists.lttng.org Sender: "lttng-dev" To: =?utf-8?B?5p2o5rW3?= Cc: lttng-dev List-Id: lttng-dev@lists.lttng.org --===============2730114321318119752== Content-Type: multipart/alternative; boundary="=_815e93dd-d341-4a12-b7f1-29d99cfb2d63" --=_815e93dd-d341-4a12-b7f1-29d99cfb2d63 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable ----- On Jul 25, 2019, at 4:21 PM, =E6=9D=A8=E6=B5=B7 wrote:=20 > Hi > Thanks for quick response. > LTTng is really impressive on performance=EF=BC=8Cespecially under heavy = workload. When > using it on critical machines=EF=BC=8Cstability is also essential. > I wonder how LTTng is commercialized and any products or OS distributions > already enabled it. > I took a look at lttng-modules bug list=EF=BC=8Cthere are a few kernel oo= ps years ago > and got resolved. May I say it is very stable or it has not been fully te= sted? Hi,=20 EfficiOS has had commercial customers using LTTng in production for many ye= ars now.=20 LTTng per-se is distributed as packages in all major Linux distributions. E= fficiOS also provides=20 more up-to-date packages for some distributions through [ http://packages.e= fficios.com/ | http://packages.efficios.com/ ]=20 The way we commercialize LTTng is through funding for design and implementa= tion of=20 customer's feature requests. We also provide commercial support tailored to= specific=20 customer's environments, which includes SLA and continuous integration test= ing of specific=20 environments.=20 If those are services you are interested in, please feel free to contact us= in private so we=20 can further discuss your needs.=20 Best regards,=20 Mathieu=20 > regards > Hai > --------------=E5=8E=9F=E5=A7=8B=E9=82=AE=E4=BB=B6-------------- > =E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9A"Jonathan Rajotte-Julien "; > =E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4=EF=BC=9A2019=E5=B9=B47=E6=9C=8823=E6= =97=A5(=E6=98=9F=E6=9C=9F=E4=BA=8C) =E4=B8=8A=E5=8D=886:20 > =E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9A"=E6=9D=A8=E6=B5=B7" ; > =E6=8A=84=E9=80=81=EF=BC=9A"lttng-dev "; > =E4=B8=BB=E9=A2=98=EF=BC=9ARe: =E5=9B=9E=E5=A4=8D:Re: [lttng-dev] Pros an= d Cons of LTTng > ----------------------------------- > Hi, >> As to LD_PRELOAD, it is also used for privilege escalation. Will it be r= egarded > > as vulnerability and forbidden on some Linux systems? > It could yes. > In that case you will be limited to the syscalls interface for the libc > observability unless you instrument it and distribute it. > Cheers. > _______________________________________________ > lttng-dev mailing list > lttng-dev@lists.lttng.org > https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev --=20 Mathieu Desnoyers=20 EfficiOS Inc.=20 http://www.efficios.com=20 --=_815e93dd-d341-4a12-b7f1-29d99cfb2d63 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
----- On Jul 25, 2019, at 4:21 PM, =E6=9D=A8=E6=B5=B7 <hai.yang@magi= c-shield.com> wrote:
Hi
<= br>
Thanks for quick response. 
LTTng is really impressi= ve on performance=EF=BC=8Cespecially under heavy workload. When using it on= critical machines=EF=BC=8Cstability is also essential. 
I w= onder how LTTng is commercialized and any products or OS distributions alre= ady enabled it. 
I took a look at lttng-modules bug list=EF= =BC=8Cthere are a few kernel oops years ago and got resolved. May I say it = is very stable or it has not been fully tested? 

Hi,

EfficiOS has had commercial customers using LTTng in prod= uction for many years now.
LTTng per-se is distributed as package= s in all major Linux distributions. EfficiOS also provides
more up-to-date packages for some distributions through = http://packages.efficios.com/=

The way we commercialize LTT= ng is through funding for design and implementation of
customer's= feature requests. We also provide commercial support tailored to specific<= /div>
customer's environments, which includes SLA and continuous integr= ation testing of specific
environments.
<= /div>

If those are services you are= interested in, please feel free to contact us in private so we
c= an further discuss your needs.

Best regards,

Mathieu

regards
Hai





--------------=E5=8E= =9F=E5=A7=8B=E9=82=AE=E4=BB=B6--------------
=E5=8F=91=E4=BB=B6=E4=BA=BA= =EF=BC=9A"Jonathan Rajotte-Julien "<jonathan.rajotte-julien@efficios.com= >;
=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4=EF=BC=9A2019=E5=B9=B47=E6=9C= =8823=E6=97=A5(=E6=98=9F=E6=9C=9F=E4=BA=8C) =E4=B8=8A=E5=8D=886:20
=E6= =94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9A"=E6=9D=A8=E6=B5=B7" <hai.yang@magic-sh= ield.com>;
=E6=8A=84=E9=80=81=EF=BC=9A"lttng-dev "<lttng-dev@lists= .lttng.org>;
=E4=B8=BB=E9=A2=98=EF=BC=9ARe: =E5=9B=9E=E5=A4=8D:Re: [= lttng-dev] Pros and Cons of LTTng
-----------------------------------
Hi,

> As to LD_PRELOAD, it is also used for pri= vilege escalation. Will it be regarded as vulnerability and forbidden on so= me Linux systems?

It could yes.
In that case you will be limited = to the syscalls interface for the libc
observability unless you instrume= nt it and distribute it.

Cheers.

________________= _______________________________
lttng-dev mailing list
lttng-dev@list= s.lttng.org
https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev

--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com<= /div>
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