From: Mathieu Desnoyers via lttng-dev <lttng-dev@lists.lttng.org>
To: Mayur Patel <mayur.patel@disguise.one>
Cc: lttng-dev <lttng-dev@lists.lttng.org>
Subject: Re: [lttng-dev] Lttng live protocol
Date: Wed, 15 Sep 2021 12:00:10 -0400 (EDT) [thread overview]
Message-ID: <2051744562.19686.1631721610084.JavaMail.zimbra@efficios.com> (raw)
In-Reply-To: <CAMZxD0qL61Q2PmCd+10UHAngBcwH9KjSOL0JyFYNu-T19Q+3ZQ@mail.gmail.com>
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----- 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
> --
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> Mayur Patel
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Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
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next prev parent reply other threads:[~2021-09-15 16:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
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 [this message]
2021-09-16 11:59 ` Mayur Patel via lttng-dev
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