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    SubjectRe: [PATCH] perf report: Add a simple GTK2-based 'perf report' browser
    Em Thu, Feb 23, 2012 at 07:10:48PM +0200, Pekka Enberg escreveu:
    > On Thu, Feb 23, 2012 at 6:53 PM, Arnaldo Carvalho de Melo <acme@ghostprotocols.net> wrote:
    > > Em Thu, Feb 23, 2012 at 02:47:39PM -0200, Arnaldo Carvalho de Melo escreveu:
    > >> Em Thu, Feb 23, 2012 at 06:45:04PM +0200, Pekka Enberg escreveu:
    > >> > How big files are we talking about here?
    > >>
    > >> 5 MB ones, say.
    > >
    > > Nah:
    > >
    > > [root@felicio linux]# perf record -a -F 10000 sleep 5m
    > > [ perf record: Woken up 166 times to write data ]
    > > [ perf record: Captured and wrote 42.104 MB perf.data (~1839573 samples)
    > > ]
    > > [root@felicio linux]#
    > > [root@felicio linux]#
    > > [root@felicio linux]# perf report --gtk
    > >
    > >  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
    > > 10618 root      20   0  408m 170m  49m S  0.0  2.2   0:04.71 perf
    > >
    > > [root@felicio linux]# perf report --tui
    > >
    > > 10633 root      20   0  379m 165m  45m S  0.0  2.1   0:01.15 perf
    >
    > Sorry, I don't understand how to interpret your numbers.

    I was just gauging how much overhead --gtk had over --tui, for this
    specific file VIRT was "just" 29 MB more, which for todays standards is
    almost nothing :-)

    So just for really, really big files this will make a difference.

    > I used the same "perf record" command here which generated a 26 MB
    > perf.data file. "perf report --gtk" starts up almost instantly here.

    Yeah, seems to be OK for most cases, for the ones where it may get in
    the way, we can use --tui or --stdio or revisit the providing a callback
    for GTK to ask for just the lines it wants rendered.

    One thing I saw was that it now defaults to --stdio and then doesn't
    setup the pager, i.e. just build it with newt-devel, gtk2-devel
    installed and don't specify --gtk to see what I mean.

    - Arnaldo
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