linux-kernel - Re: [RFC/PATCH 00/14] perf record: Add support to store data in directory

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Message-ID: <20190204202818.GC4794@krava>
Date:   Mon, 4 Feb 2019 21:28:18 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Stephane Eranian <eranian@...gle.com>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexey Budankov <alexey.budankov@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Andi Kleen <ak@...ux.intel.com>
Subject: Re: [RFC/PATCH 00/14] perf record: Add support to store data in
 directory

On Mon, Feb 04, 2019 at 12:05:38PM -0800, Stephane Eranian wrote:

SNIP

> > > > > >
> > > > > > [jolsa@...va perf]$ ll result_1/
> > > > > > total 348
> > > > > > -rw-------. 1 jolsa jolsa 27624 Feb  4 11:35 data.0
> > > > > > -rw-------. 1 jolsa jolsa 56672 Feb  4 11:35 data.1
> > > > > > -rw-------. 1 jolsa jolsa 30824 Feb  4 11:35 data.2
> > > > > > -rw-------. 1 jolsa jolsa 49136 Feb  4 11:35 data.3
> > > > > > -rw-------. 1 jolsa jolsa 22712 Feb  4 11:35 data.4
> > > > > > -rw-------. 1 jolsa jolsa 53392 Feb  4 11:35 data.5
> > > > > > -rw-------. 1 jolsa jolsa 43352 Feb  4 11:35 data.6
> > > > > > -rw-------. 1 jolsa jolsa 46688 Feb  4 11:35 data.7
> > > > > > -rw-------. 1 jolsa jolsa  9068 Feb  4 11:35 header
> > > > >
> > > > > Awesome. What do you think about having it like this:
> > > > >
> > > > >   $ perf record --output result_1.data ... - writes data to a file
> > > > >
> > > > >   $ perf record --dir result_1 ... - or even
> > > > >   $ perf record --output_dir result_1 ... - writes data into a directory
> > > > >
> > > > > IMHO, this interface is simpler for a user.
> > > >
> > > > yep, seems more convenient.. I'll add it
> > > >
> > > But what happens if you do: perf record -o foo --output_dir foo.d?
> >
> > Should fail, i.e. either you use single-file or directory output, I
> > think.
> >
> Agreed

ok, will do that

thanks,
jirka