Hi,
On Fri, Nov 27, 2020 at 02:39:28PM +0800, 熊毓华 via lttng-dev wrote:
> Hi，dear.
>
> I have been using lttng to monitor my server these days，but I found something
> interesting.
>
> The cpu usage of lttng varies with the number of cpu cores of the server.
Which is a bit expected since more CP
Hi，Dear.
The test script was used to generate some common fileIO,netIO events.
On all servers, the monitoring strategy I set up when I start lttng is the
same, monitoring all fileIO, netIO and some related system calls.
The following table records the amount of events generated by the test scri
> From: "熊毓华"
> To: "Jonathan Rajotte-Julien" ,
> "lttng-dev"
> Sent: Friday, November 27, 2020 10:32:07 AM
> Subject: Re: Re: [lttng-dev] Some confusion about cpu usage of the
> lttng-consumerd process
> Hi，Dear.
Side note, you can remove the "Dear" here. ;)
> The test script was used to gen
- On Nov 27, 2020, at 11:04 AM, lttng-dev lttng-dev@lists.lttng.org wrote:
> Well we also want to know why! You will understand that albeit we develop
> lttng
> we do not always have a quick and easy answer to all problems. Performance
> related problem are always tricky.
> And we also have t
Hi,
I put my test scripts in the attachment.
You can just run the script directly, create the trace session with the
"--live" option on the 8core server,
then you will find the cpu usage of the lttng-consumerd process reached 10% or
more.
About the streaming mode of lttng,I did the test be
