From: "熊毓华 via lttng-dev" <lttng-dev@lists.lttng.org>
To: "lttng-dev@lists.lttng.org" <lttng-dev@lists.lttng.org>,
"mathieu.desnoyers@efficios.com"
<mathieu.desnoyers@efficios.com>,
"gbastien@versatic.net" <gbastien@versatic.net>
Subject: [lttng-dev] How to use the lttng-untrack command
Date: Tue, 1 Sep 2020 17:13:25 +0800 (GMT+08:00) [thread overview]
Message-ID: <6e9da9cb.16e65.17448f14499.Coremail.xiongyuhua@zju.edu.cn> (raw)
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Hi，dear
Hello, I have encountered some problems in using LTTNG, which is briefly described as follows. I am eager to get your help.
About the use of the untrack command.It is reproduced as follows:
I type the following commands in turn to start LTTNG, and set up not to monitor a particular process.(For example, I input the "top" command in the terminal, the PID of the "top" process is 72598, now I want LTTNG not to monitor the "top" process)
lttng create my-kernel-session --output=/tmp/my-kernel-trace
lttng add-context -k -t pid
lttng add-context -k -t tid
lttng enable-event --kernel --all
lttng untrack --kernel --pid=72598
lttng start
lttng destroy
babeltrace2 /tmp/my-kernel-trace > babeltrace.txt
Unfortunately, the output still contains the data for PID72598.
Even after I changed "lttng untrack --kernel -- PID =72598" to "LTTNG untrack-u -- PID =72598", this phenomenon still occurred.
How do I use the lttng-untrack command to achieve my goal?
Looking forward to your reply.
thanks,
yuhua
------------------
Yuhua Xiong
Lab for Internet and Security Technology
School of Computer Science and Technology
Zhejiang University
Hangzhou, 310007, P.R. China
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next reply other threads:[~2020-09-01 13:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-01 9:13 熊毓华 via lttng-dev [this message]
2020-09-01 13:37 ` [lttng-dev] How to use the lttng-untrack command Mathieu Desnoyers via lttng-dev
2020-09-03 2:53 ` 熊毓华 via lttng-dev
2020-09-03 14:17 ` Mathieu Desnoyers via lttng-dev
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