The output of 'perf trace --summary' tries to be too cute with
formatting and makes it very hard to read. Simplify it in the spirit of
"strace -c":
[penberg@localhost libtrading]$ perf trace -a --duration 10000 --summary --
sleep 1
^C
Summary of events:
dbus-daemon (555), 10 events, 0.0%, 0.000 msec
msec/call
syscall calls min avg max stddev
--------------- -------- -------- -------- -------- ------
sendmsg 2 0.002 0.005 0.008 55.00
recvmsg 2 0.002 0.003 0.005 44.00
epoll_wait 1 0.000 0.000 0.000 0.00
NetworkManager (667), 56 events, 0.0%, 0.000 msec
msec/call
syscall calls min avg max stddev
--------------- -------- -------- -------- -------- ------
poll 2 0.000 0.002 0.003 100.00
sendmsg 10 0.004 0.007 0.016 15.41
recvmsg 16 0.002 0.003 0.005 8.24
zfs-fuse (669), 4 events, 0.0%, 0.000 msec
msec/call
syscall calls min avg max stddev
--------------- -------- -------- -------- -------- ------
futex 2 0.000 0.001 0.002 100.00
Cc: David Ahern <dsah...@gmail.com>
Cc: Ingo Molnar <mi...@redhat.com>
Cc: Arnaldo Carvalho de Melo <a...@ghostprotocols.net>
Signed-off-by: Pekka Enberg <penb...@kernel.org>
---
tools/perf/builtin-trace.c | 25 ++++++++++++-------------
1 file changed, 12 insertions(+), 13 deletions(-)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index f841d2a..22354c8 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2082,12 +2082,7 @@ static size_t trace__fprintf_threads_header(FILE *fp)
{
size_t printed;
- printed = fprintf(fp, "\n
_____________________________________________________________________________\n");
- printed += fprintf(fp, " __) Summary of events (__\n\n");
- printed += fprintf(fp, " [ task - pid ] [ events ] [
ratio ] [ runtime ]\n");
- printed += fprintf(fp, " syscall
count min avg max stddev\n");
- printed += fprintf(fp, "
msec msec msec %%\n");
- printed += fprintf(fp, "
_____________________________________________________________________________\n\n");
+ printed = fprintf(fp, "\n Summary of events:\n\n");
return printed;
}
@@ -2105,6 +2100,10 @@ static size_t thread__dump_stats(struct thread_trace
*ttrace,
printed += fprintf(fp, "\n");
+ printed += fprintf(fp, "
msec/call\n");
+ printed += fprintf(fp, " syscall calls min avg
max stddev\n");
+ printed += fprintf(fp, " --------------- -------- -------- --------
-------- ------\n");
+
/* each int_node is a syscall */
while (inode) {
stats = inode->priv;
@@ -2119,10 +2118,10 @@ static size_t thread__dump_stats(struct thread_trace
*ttrace,
avg /= NSEC_PER_MSEC;
sc = &trace->syscalls.table[inode->i];
- printed += fprintf(fp, "%24s %14s : ", "", sc->name);
- printed += fprintf(fp, "%5" PRIu64 " %8.3f %8.3f",
+ printed += fprintf(fp, " %-15s", sc->name);
+ printed += fprintf(fp, " %8" PRIu64 " %8.3f %8.3f",
n, min, avg);
- printed += fprintf(fp, " %8.3f %6.2f\n", max, pct);
+ printed += fprintf(fp, " %8.3f %6.2f\n", max, pct);
}
inode = intlist__next(inode);
@@ -2163,10 +2162,10 @@ static int trace__fprintf_one_thread(struct thread
*thread, void *priv)
else if (ratio > 5.0)
color = PERF_COLOR_YELLOW;
- printed += color_fprintf(fp, color, "%20s", thread__comm_str(thread));
- printed += fprintf(fp, " - %-5d :%11lu [", thread->tid,
ttrace->nr_events);
- printed += color_fprintf(fp, color, "%5.1f%%", ratio);
- printed += fprintf(fp, " ] %10.3f ms\n", ttrace->runtime_ms);
+ printed += color_fprintf(fp, color, " %s (%d), ",
thread__comm_str(thread), thread->tid);
+ printed += fprintf(fp, "%lu events, ", ttrace->nr_events);
+ printed += color_fprintf(fp, color, "%.1f%%", ratio);
+ printed += fprintf(fp, ", %.3f msec\n", ttrace->runtime_ms);
printed += thread__dump_stats(ttrace, trace, fp);
data->printed += printed;
--
1.8.3.1
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