Re: [PATCH 6/7] perf record: Add switch-output size option argument

From: Arnaldo Carvalho de Melo
Date: Tue Jan 03 2017 - 11:21:20 EST


Em Tue, Jan 03, 2017 at 08:33:35AM -0700, David Ahern escreveu:
> On 1/3/17 1:19 AM, Jiri Olsa wrote:
> > It's now possible to specify the threshold size for
> > perf.data like:
> >
> > $ perf record --switch-output=2G ...
> >
> > Once it's reached, the current data are dumped in to the
> > perf.data.<timestamp> file and session does on.
>
> How about something like max-file-size instead of switch-output?

Well, I think he wants to use the "switch-output" semantic, which will
go on "slicing" the output into multiple files according to the
specified criteria, be it the existing signal one or a file size.

"max-file-size" looks like a hard limit, no hint about producing
multiple files.

- Arnaldo