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Thu, 19 Jun 2025 07:59:16 -0700 (PDT) MIME-Version: 1.0 Date: Thu, 19 Jun 2025 16:58:59 +0200 X-Gm-Features: AX0GCFuRrzGFuoQuuN-yET9rnOGPEXe7T4j0kjMEaXdsPSKKyABxN-6mj0N49sM Message-ID: Subject: Malformed Tracefiles To: lttng-dev@lists.lttng.org Content-Type: multipart/alternative; boundary="0000000000004209220637edfd39" X-Mailman-Approved-At: Thu, 19 Jun 2025 13:10:41 -0400 X-BeenThere: lttng-dev@lists.lttng.org X-Mailman-Version: 2.1.39 Precedence: list List-Id: LTTng development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Georg Muck via lttng-dev Reply-To: Georg Muck Errors-To: lttng-dev-bounces@lists.lttng.org Sender: "lttng-dev" --0000000000004209220637edfd39 Content-Type: text/plain; charset="UTF-8" Hey, I am using the LTTng tracer (2.13.11, C-API, rotation=1s) to trace my ROS2 system (userspace only). Everything works just fine within my Docker Container (Ubuntu 24.04), but if I start the same procedure on the host itself (also Ubuntu 24.04), it does not create a TraceFile if to many tracepoints occur (speaking of roundabout 1500+ per second) (sometimes it malformed the tracefile, but I was not able to recreate that. If I remember correctly, Babeltrace2 threw an error that said that there was no metadata-file). I played around with some configurations (like increasing the buffer size from ~16kB to ~512kB or a less aggressive rotation), but the problem stayed. Would be thankful for help. I guess I delivered to less information, please reach out what is interesting at this point, I am not sure about that :). Best regards, Georg Never burn the bridges before you If you've burned the bridges behind Never burn the one that you're walking upon Or you're sure to hit the water in time. *(Savatage, Streets, 1991)* --0000000000004209220637edfd39 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hey,

I am using the LTTng tracer (2.13.11, C-A= PI, rotation=3D1s) to trace my ROS2 system (userspace only). Everything wor= ks just fine within my Docker Container (Ubuntu 24.04), but if I start the = same procedure on the host itself (also Ubuntu 24.04), it does not create a= TraceFile if to many tracepoints occur (speaking of roundabout 1500+ per s= econd) (sometimes it malformed the tracefile, but I was not able to recreat= e that. If I remember correctly, Babeltrace2 threw an error that said that = there was no metadata-file). I played around with some configurations (like= increasing the buffer size from ~16kB to ~512kB or a less aggressive rotat= ion), but the problem stayed.

Would be thankful=C2=A0for help. I gue= ss I delivered to less information, please reach out what is interesting at= this point, I am not sure about that :).

Best regards,
Georg
=


Never burn the bridges before you
If you've burned the = bridges behind
Never burn the one that you're walking upon
Or you're = sure to hit the water in time. (Savatage, Streets, 1991)
<= /div>
--0000000000004209220637edfd39--