[ltt-dev] LTTng-UST vs SystemTap userspace tracing benchmarks

Frank Ch. Eigler fche at redhat.com
Tue Feb 15 12:39:25 EST 2011

Hi -

mathieu.desnoyers wrote:

> [...]
>> This is not that surprising, considering how the two tools work.  UST
>> does its work in userspace,
> This first part of the statement is true,
>> and is therefore focused on an individual process's activities.
> This is incorrect. LTTng and UST gather traces from multiple processes and from
> the kernel, and merge them in post-processing. [...]

Isn't such after-the-fact merging out of scope of the present
microbenchmark, and in any case applicable to both tools?

- FChE

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