* [lttng-dev] Lttng live protocol @ 2021-09-01 17:23 Mayur Patel via lttng-dev 2021-09-15 16:00 ` Mathieu Desnoyers via lttng-dev 0 siblings, 1 reply; 3+ messages in thread From: Mayur Patel via lttng-dev @ 2021-09-01 17:23 UTC (permalink / raw) To: lttng-dev [-- Attachment #1.1: Type: text/plain, Size: 1077 bytes --] Hi there, I am currently evaluating the use of CTF and lttng tooling for application tracing on windows. We are exploring alternatives to ETW that are more customisable. One thing we would really like to do is real-time monitoring of our application from another machine. I have a few questions regarding this: 1. Is lttng live protocol suitable for this purpose? What kind of latency would we expect? (e.g 10s or 100s of milliseconds or more) 2. Is the protocol documented? 3. Is it possible to use lttng-relayd to read from local CTF log files (which are being written to) and stream events to other machines / a viewer on the same machine? The reason I ask this is the documentation seems suggests lttng-relayd can consume CTF files https://lttng.org/docs/v2.13/#doc-lttng-relayd. 4. I see there is a windows cygwin build on jenkins. Would you recommend this for production use? Any guidance would be much appreciated. Thanks in advance, Mayur Mayur Patel Lead Software Engineer +44 20 7234 9840 88-89 Blackfriars Road, London, SE1 8HA [-- Attachment #1.2: Type: text/html, Size: 10322 bytes --] [-- Attachment #2: Type: text/plain, Size: 156 bytes --] _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [lttng-dev] Lttng live protocol 2021-09-01 17:23 [lttng-dev] Lttng live protocol Mayur Patel via lttng-dev @ 2021-09-15 16:00 ` Mathieu Desnoyers via lttng-dev 2021-09-16 11:59 ` Mayur Patel via lttng-dev 0 siblings, 1 reply; 3+ messages in thread From: Mathieu Desnoyers via lttng-dev @ 2021-09-15 16:00 UTC (permalink / raw) To: Mayur Patel; +Cc: lttng-dev [-- Attachment #1.1: Type: text/plain, Size: 3656 bytes --] ----- On Sep 1, 2021, at 1:23 PM, lttng-dev <lttng-dev@lists.lttng.org> wrote: > Hi there, > I am currently evaluating the use of CTF and lttng tooling for application > tracing on windows. We are exploring alternatives to ETW that are more > customisable. > One thing we would really like to do is real-time monitoring of our application > from another machine. I have a few questions regarding this: > 1. Is lttng live protocol suitable for this purpose? What kind of latency would > we expect? (e.g 10s or 100s of milliseconds or more) The lttng live protocol has been designed for extracting a low-throughput of events to a live pretty-printer, with delays in the area of a few seconds. It's a polling-based mechanism at the moment. > 2. Is the protocol documented? No. There is only an implementation with the lttng project and in babeltrace. > 3. Is it possible to use lttng-relayd to read from local CTF log files (which > are being written to) and stream events to other machines / a viewer on the > same machine? The reason I ask this is the documentation seems suggests > lttng-relayd can consume CTF files [ > https://lttng.org/docs/v2.13/#doc-lttng-relayd | > https://lttng.org/docs/v2.13/#doc-lttng-relayd ] . lttng-relayd needs to control both writing to the CTF log files and reading from them. The "writing to" cannot be done by an external process. > 4. I see there is a windows cygwin build on jenkins. Would you recommend this > for production use? We do not recommend Cygwin builds for production use unless there are no alternatives. From my own past experience, the Cygwin layer is not a solid basis for production-quality software. Thanks for your interest, Mathieu > Any guidance would be much appreciated. > Thanks in advance, > Mayur > -- > [ http://www.disguise.one/ ] > Mayur Patel > Lead Software Engineer > T : +44 20 7234 9840 > M : +44 7342 180127 > A : [ > https://www.google.com/maps/place/88-89%20Blackfriars%20Road,%20London,%20SE1%208HA > | 88-89 Blackfriars Road, London, SE1 8HA ] > [ https://www.facebook.com/disguise.one/ ] > [ https://twitter.com/disguise_one ] > [ https://www.youtube.com/channel/UCBXckvTm2VHU29BUoKJizvA ] > [ https://www.instagram.com/disguise_one/ ] > [ https://www.linkedin.com/company/disguise-/ ] > disguise Technologies Limited is a privately owned business registered in > England and Wales (registered number 07937973), with its registered office > located at 88-89 Blackfriars Road, London, SE1 8HA. This e-mail, and any > attachments thereto, is intended only for use by the addressee(s) named herein > and may contain legally privileged and/or confidential information. If you are > not the intended recipient of this e-mail, you are hereby notified that any > dissemination, distribution or copying of this e-mail, and any attachments > thereto, is strictly prohibited. If you have received this e-mail in error, > please notify me by replying to this message and permanently delete the > original and any copy of this e-mail and any printout thereof. Although this > e-mail and any attachments are believed to be free of any virus, or other > defect which might affect any computer or system into which they are received > and opened, it is the responsibility of the recipient to ensure that they are > virus free and no responsibility is accepted by disguise for any loss or damage > from receipt or use thereof. > _______________________________________________ > lttng-dev mailing list > lttng-dev@lists.lttng.org > https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com [-- Attachment #1.2: Type: text/html, Size: 12128 bytes --] [-- Attachment #2: Type: text/plain, Size: 156 bytes --] _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [lttng-dev] Lttng live protocol 2021-09-15 16:00 ` Mathieu Desnoyers via lttng-dev @ 2021-09-16 11:59 ` Mayur Patel via lttng-dev 0 siblings, 0 replies; 3+ messages in thread From: Mayur Patel via lttng-dev @ 2021-09-16 11:59 UTC (permalink / raw) To: Mathieu Desnoyers; +Cc: lttng-dev [-- Attachment #1.1: Type: text/plain, Size: 3992 bytes --] Thank you for the information! On Wed, 15 Sept 2021 at 17:00, Mathieu Desnoyers < mathieu.desnoyers@efficios.com> wrote: > > ----- On Sep 1, 2021, at 1:23 PM, lttng-dev <lttng-dev@lists.lttng.org> > wrote: > > Hi there, > > I am currently evaluating the use of CTF and lttng tooling for application > tracing on windows. We are exploring alternatives to ETW that are more > customisable. > One thing we would really like to do is real-time monitoring of our > application from another machine. I have a few questions regarding this: > > 1. Is lttng live protocol suitable for this purpose? What kind of latency > would we expect? (e.g 10s or 100s of milliseconds or more) > > > The lttng live protocol has been designed for extracting a low-throughput > of events to a live pretty-printer, with delays in the area of > a few seconds. It's a polling-based mechanism at the moment. > > 2. Is the protocol documented? > > > No. There is only an implementation with the lttng project and in > babeltrace. > > 3. Is it possible to use lttng-relayd to read from local CTF log files > (which are being written to) and stream events to other machines / a viewer > on the same machine? The reason I ask this is the documentation seems > suggests lttng-relayd can consume CTF files > https://lttng.org/docs/v2.13/#doc-lttng-relayd. > > > lttng-relayd needs to control both writing to the CTF log files and > reading from them. The "writing to" > cannot be done by an external process. > > 4. I see there is a windows cygwin build on jenkins. Would you recommend > this for production use? > > > We do not recommend Cygwin builds for production use unless there are no > alternatives. From my own > past experience, the Cygwin layer is not a solid basis for > production-quality software. > > Thanks for your interest, > > Mathieu > > > Any guidance would be much appreciated. > > Thanks in advance, > > Mayur > > -- > > <http://www.disguise.one> > > Mayur Patel > > Lead Software Engineer > > T : +44 20 7234 9840 > > M : +44 7342 180127 > > A : 88-89 Blackfriars Road, London, SE1 8HA > <https://www.google.com/maps/place/88-89%20Blackfriars%20Road,%20London,%20SE1%208HA> > > <https://www.facebook.com/disguise.one/> > > <https://twitter.com/disguise_one> > > <https://www.youtube.com/channel/UCBXckvTm2VHU29BUoKJizvA> > > <https://www.instagram.com/disguise_one/> > > <https://www.linkedin.com/company/disguise-/> > > disguise Technologies Limited is a privately owned business registered in > England and Wales (registered number 07937973), with its registered office > located at 88-89 Blackfriars Road, London, SE1 8HA. This e-mail, and any > attachments thereto, is intended only for use by the addressee(s) named > herein and may contain legally privileged and/or confidential information. > If you are not the intended recipient of this e-mail, you are hereby > notified that any dissemination, distribution or copying of this e-mail, > and any attachments thereto, is strictly prohibited. If you have received > this e-mail in error, please notify me by replying to this message and > permanently delete the original and any copy of this e-mail and any > printout thereof. Although this e-mail and any attachments are believed to > be free of any virus, or other defect which might affect any computer or > system into which they are received and opened, it is the responsibility of > the recipient to ensure that they are virus free and no responsibility is > accepted by disguise for any loss or damage from receipt or use thereof. > > _______________________________________________ > lttng-dev mailing list > lttng-dev@lists.lttng.org > https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev > > > -- > Mathieu Desnoyers > EfficiOS Inc. > http://www.efficios.com > Mayur Patel Lead Software Engineer +44 20 7234 9840 88-89 Blackfriars Road, London, SE1 8HA [-- Attachment #1.2: Type: text/html, Size: 20422 bytes --] [-- Attachment #2: Type: text/plain, Size: 156 bytes --] _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-09-16 13:08 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2021-09-01 17:23 [lttng-dev] Lttng live protocol Mayur Patel via lttng-dev 2021-09-15 16:00 ` Mathieu Desnoyers via lttng-dev 2021-09-16 11:59 ` Mayur Patel via lttng-dev
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