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Message-ID: <YG4H9+2Ks8kXZ7L9@kernel.org>
Date: Wed, 7 Apr 2021 16:28:55 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Martin Liška <mliska@...e.cz>
Cc: linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org
Subject: Re: [PATCH] perf annotate: improve --stdio mode
Em Fri, Mar 19, 2021 at 10:38:26AM +0100, Martin Liška escreveu:
> PING
Can you please try to refresh the patch? It isn't applying, probably my
bad for not having processed it already :-\
- Arnaldo
> On 2/26/21 10:24 AM, Martin Liška wrote:
> > On 2/23/21 8:47 PM, Arnaldo Carvalho de Melo wrote:
> > > Em Sun, Feb 21, 2021 at 01:46:36PM +0100, Martin Liška escreveu:
> > > > The patch changes the output format in 2 ways:
> > > > - line number is displayed for all source lines (matching TUI mode)
> > >
> > > Are you aware of 'perf annotate --stdio2' ? If the goal is to make the
> > > stdio mode better, doing it in that mode would be best, as it was done
> > > to share as much code as possible, not just the looks, with the TUI
> > > mode.
> >
> > Yes, I'm aware of it. My motivation is to generate a HTML perf annotate report
> > and I see the following parts of --stdio2 not ideal:
> >
> > - coloring is not available (--stdio-color=always does not work)
> > - 'Sorted summary for file ' is missing so one can't easily search for
> > hot spots in browser
> > - source line number are displayed, but not the source files
> > - there's a missing option for 'Toggle disassembler output/simplified view' which
> > is available in TUI mode
> >
> > That said, the stdio2 annotation report is quite different and so handy for my use case.
> >
> > >
> > > I kept --stdio around because changing the output in that way could
> > > annoy people used to that format.
> >
> > Sure. But I think the current format provides quite broken visual layout:
> >
> > 0.00 : 405ef1: inc %r15
> > 0.01 : 405ef4: vfmadd213sd 0x2b9b3(%rip),%xmm0,%xmm3 # 4318b0 <_IO_stdin_used+0x8b0>
> > eff.c:1811 0.67 : 405efd: vfmadd213sd 0x2b9b2(%rip),%xmm0,%xmm3 # 4318b8 <_IO_stdin_used+0x8b8>
> > : TA + tmpsd * (TB +
> >
> > vs.
> >
> > 0.00 : 405ef1: inc %r15
> > 0.01 : 405ef4: vfmadd213sd 0x2b9b3(%rip),%xmm0,%xmm3 # 4318b0 <_IO_stdin_used+0x8b0>
> > 0.67 : 405efd: vfmadd213sd 0x2b9b2(%rip),%xmm0,%xmm3 # 4318b8 <_IO_stdin_used+0x8b8> // eff.c:1811
> > : 1810 TA + tmpsd * (TB +
> >
> > I bet also the current users of --stdio mode would benefit from it.
> > What do you think?
> >
> > Thanks,
> > Martin
> >
> > >
> > > Please take a look at 'man perf-config' and see what can be configured
> > > for both 'perf annotate --tui' and 'perf annotate --stdio2'.
> > >
> > > Perhaps we can do something like:
> > >
> > > perf config annotate.stdio=tui_like
> > >
> > > And, for completeness have:
> > >
> > > perf config annotate.stdio=classical
> > >
> > > wdyt?
> > >
> > > Looking at the other patches now.
> > >
> > > - Arnaldo
> > >
> > > > - source locations for the hottest lines are printed
> > > > at the line end in order to preserve layout
> > > >
> > > > Before:
> > > >
> > > > 0.00 : 405ef1: inc %r15
> > > > : tmpsd * (TD + tmpsd * TDD)));
> > > > 0.01 : 405ef4: vfmadd213sd 0x2b9b3(%rip),%xmm0,%xmm3 # 4318b0 <_IO_stdin_used+0x8b0>
> > > > : tmpsd * (TC +
> > > > eff.c:1811 0.67 : 405efd: vfmadd213sd 0x2b9b2(%rip),%xmm0,%xmm3 # 4318b8 <_IO_stdin_used+0x8b8>
> > > > : TA + tmpsd * (TB +
> > > > 0.35 : 405f06: vfmadd213sd 0x2b9b1(%rip),%xmm0,%xmm3 # 4318c0 <_IO_stdin_used+0x8c0>
> > > > : dumbo =
> > > > eff.c:1809 1.41 : 405f0f: vfmadd213sd 0x2b9b0(%rip),%xmm0,%xmm3 # 4318c8 <_IO_stdin_used+0x8c8>
> > > > : sumi -= sj * tmpsd * dij2i * dumbo;
> > > > eff.c:1813 2.58 : 405f18: vmulsd %xmm3,%xmm0,%xmm0
> > > > 2.81 : 405f1c: vfnmadd213sd 0x30(%rsp),%xmm1,%xmm0
> > > > 3.78 : 405f23: vmovsd %xmm0,0x30(%rsp)
> > > > : for (k = 0; k < lpears[i] + upears[i]; k++) {
> > > > eff.c:1761 0.90 : 405f29: cmp %r15d,%r12d
> > > >
> > > > After:
> > > >
> > > > 0.00 : 405ef1: inc %r15
> > > > : 1812 tmpsd * (TD + tmpsd * TDD)));
> > > > 0.01 : 405ef4: vfmadd213sd 0x2b9b3(%rip),%xmm0,%xmm3 # 4318b0 <_IO_stdin_used+0x8b0>
> > > > : 1811 tmpsd * (TC +
> > > > 0.67 : 405efd: vfmadd213sd 0x2b9b2(%rip),%xmm0,%xmm3 # 4318b8 <_IO_stdin_used+0x8b8> // eff.c:1811
> > > > : 1810 TA + tmpsd * (TB +
> > > > 0.35 : 405f06: vfmadd213sd 0x2b9b1(%rip),%xmm0,%xmm3 # 4318c0 <_IO_stdin_used+0x8c0>
> > > > : 1809 dumbo =
> > > > 1.41 : 405f0f: vfmadd213sd 0x2b9b0(%rip),%xmm0,%xmm3 # 4318c8 <_IO_stdin_used+0x8c8> // eff.c:1809
> > > > : 1813 sumi -= sj * tmpsd * dij2i * dumbo;
> > > > 2.58 : 405f18: vmulsd %xmm3,%xmm0,%xmm0 // eff.c:1813
> > > > 2.81 : 405f1c: vfnmadd213sd 0x30(%rsp),%xmm1,%xmm0
> > > > 3.78 : 405f23: vmovsd %xmm0,0x30(%rsp)
> > > > : 1761 for (k = 0; k < lpears[i] + upears[i]; k++) {
> > > >
> > > > Where e.g. '// eff.c:1811' shares the same color as the percentantage
> > > > at the line beginning.
> > > >
> > > > Signed-off-by: Martin Liška <mliska@...e.cz>
> > > > ---
> > > > tools/perf/util/annotate.c | 30 ++++++++++++++----------------
> > > > 1 file changed, 14 insertions(+), 16 deletions(-)
> > > >
> > > > diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
> > > > index e60841b86d27..80542012ec1b 100644
> > > > --- a/tools/perf/util/annotate.c
> > > > +++ b/tools/perf/util/annotate.c
> > > > @@ -1366,7 +1366,6 @@ annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start
> > > > {
> > > > struct disasm_line *dl = container_of(al, struct disasm_line, al);
> > > > static const char *prev_line;
> > > > - static const char *prev_color;
> > > > if (al->offset != -1) {
> > > > double max_percent = 0.0;
> > > > @@ -1405,20 +1404,6 @@ annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start
> > > > color = get_percent_color(max_percent);
> > > > - /*
> > > > - * Also color the filename and line if needed, with
> > > > - * the same color than the percentage. Don't print it
> > > > - * twice for close colored addr with the same filename:line
> > > > - */
> > > > - if (al->path) {
> > > > - if (!prev_line || strcmp(prev_line, al->path)
> > > > - || color != prev_color) {
> > > > - color_fprintf(stdout, color, " %s", al->path);
> > > > - prev_line = al->path;
> > > > - prev_color = color;
> > > > - }
> > > > - }
> > > > -
> > > > for (i = 0; i < nr_percent; i++) {
> > > > struct annotation_data *data = &al->data[i];
> > > > double percent;
> > > > @@ -1439,6 +1424,19 @@ annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start
> > > > printf(" : ");
> > > > disasm_line__print(dl, start, addr_fmt_width);
> > > > +
> > > > + /*
> > > > + * Also color the filename and line if needed, with
> > > > + * the same color than the percentage. Don't print it
> > > > + * twice for close colored addr with the same filename:line
> > > > + */
> > > > + if (al->path) {
> > > > + if (!prev_line || strcmp(prev_line, al->path)) {
> > > > + color_fprintf(stdout, color, " // %s", al->path);
> > > > + prev_line = al->path;
> > > > + }
> > > > + }
> > > > +
> > > > printf("\n");
> > > > } else if (max_lines && printed >= max_lines)
> > > > return 1;
> > > > @@ -1454,7 +1452,7 @@ annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start
> > > > if (!*al->line)
> > > > printf(" %*s:\n", width, " ");
> > > > else
> > > > - printf(" %*s: %*s %s\n", width, " ", addr_fmt_width, " ", al->line);
> > > > + printf(" %*s: %-*d %s\n", width, " ", addr_fmt_width, al->line_nr, al->line);
> > > > }
> > > > return 0;
> > > > --
> > > > 2.30.1
> > > >
> > >
> >
>
--
- Arnaldo
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