Messages in this thread | | | Date | Thu, 23 Feb 2012 15:37:43 -0200 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |