[PATCH 01/26] perf trace: Add total time column to summary.
From: Milian Wolff
It is cumbersome to manually calculate the total time spent in a given
syscall by multiplying the average value with the number of calls.
Instead, we now do this directly inside perf trace.
Note that this is also done by 'strace', which even adds a column with
relative numbers - something we could do in the future.
Example:
perf trace -s find /some/folder > /dev/null
Summary of events:
find (19976), 700123 events, 100.0%, 0.000 msec
syscallcallstotal min avg max stddev
(msec)(msec)(msec)(msec)(%)
--- - - - - --
read 4 0.006 0.001 0.002 0.003 27.42%
write 8046 9.617 0.001 0.001 0.035 0.56%
open 3419640.384 0.001 0.001 0.071 0.30%
close 6837557.104 0.001 0.001 0.076 0.25%
stat 4 0.004 0.001 0.001 0.001 3.14%
fstat 3418927.518 0.001 0.001 0.060 0.34%
mmap 13 0.029 0.001 0.002 0.003 10.74%
mprotect 6 0.018 0.002 0.003 0.005 17.04%
munmap 3 0.014 0.003 0.005 0.006 24.87%
brk 87 0.490 0.001 0.006 0.016 6.50%
ioctl 3 0.004 0.001 0.001 0.003 36.39%
access 1 0.004 0.004 0.004 0.004 0.00%
uname 1 0.001 0.001 0.001 0.001 0.00%
getdents 68393 143.600 0.001 0.002 0.187 0.95%
fchdir 6837156.980 0.001 0.001 0.111 0.39%
arch_prctl 1 0.001 0.001 0.001 0.001 0.00%
openat 3418441.737 0.001 0.001 0.102 0.41%
newfstatat 3418441.180 0.001 0.001 0.064 0.34%
Signed-off-by: Milian Wolff
Tested-by: Arnaldo Carvalho de Melo
LPU-Reference: 1438853069-5902-1-git-send-email-milian.wo...@kdab.com
Signed-off-by: Arnaldo Carvalho de Melo
---
tools/perf/builtin-trace.c | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index a47497011c93..a25048c85b76 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2773,9 +2773,9 @@ static size_t thread__dump_stats(struct thread_trace
*ttrace,
printed += fprintf(fp, "\n");
- printed += fprintf(fp, " syscallcalls min avg
max stddev\n");
- printed += fprintf(fp, " (msec)(msec)
(msec)(%%)\n");
- printed += fprintf(fp, " --- - -
- --\n");
+ printed += fprintf(fp, " syscallcallstotal min
avg max stddev\n");
+ printed += fprintf(fp, " (msec)(msec)
(msec)(msec)(%%)\n");
+ printed += fprintf(fp, " --- - -
- - --\n");
/* each int_node is a syscall */
while (inode) {
@@ -2792,8 +2792,8 @@ static size_t thread__dump_stats(struct thread_trace
*ttrace,
sc = >syscalls.table[inode->i];
printed += fprintf(fp, " %-15s", sc->name);
- printed += fprintf(fp, " %8" PRIu64 " %9.3f %9.3f",
- n, min, avg);
+ printed += fprintf(fp, " %8" PRIu64 " %9.3f %9.3f
%9.3f",
+ n, avg * n, min, avg);
printed += fprintf(fp, " %9.3f %9.2f%%\n", max, pct);
}
--
2.1.0
--
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[PATCH 01/26] perf trace: Add total time column to summary.
From: Milian Wolff milian.wo...@kdab.com
It is cumbersome to manually calculate the total time spent in a given
syscall by multiplying the average value with the number of calls.
Instead, we now do this directly inside perf trace.
Note that this is also done by 'strace', which even adds a column with
relative numbers - something we could do in the future.
Example:
perf trace -s find /some/folder /dev/null
Summary of events:
find (19976), 700123 events, 100.0%, 0.000 msec
syscallcallstotal min avg max stddev
(msec)(msec)(msec)(msec)(%)
--- - - - - --
read 4 0.006 0.001 0.002 0.003 27.42%
write 8046 9.617 0.001 0.001 0.035 0.56%
open 3419640.384 0.001 0.001 0.071 0.30%
close 6837557.104 0.001 0.001 0.076 0.25%
stat 4 0.004 0.001 0.001 0.001 3.14%
fstat 3418927.518 0.001 0.001 0.060 0.34%
mmap 13 0.029 0.001 0.002 0.003 10.74%
mprotect 6 0.018 0.002 0.003 0.005 17.04%
munmap 3 0.014 0.003 0.005 0.006 24.87%
brk 87 0.490 0.001 0.006 0.016 6.50%
ioctl 3 0.004 0.001 0.001 0.003 36.39%
access 1 0.004 0.004 0.004 0.004 0.00%
uname 1 0.001 0.001 0.001 0.001 0.00%
getdents 68393 143.600 0.001 0.002 0.187 0.95%
fchdir 6837156.980 0.001 0.001 0.111 0.39%
arch_prctl 1 0.001 0.001 0.001 0.001 0.00%
openat 3418441.737 0.001 0.001 0.102 0.41%
newfstatat 3418441.180 0.001 0.001 0.064 0.34%
Signed-off-by: Milian Wolff milian.wo...@kdab.com
Tested-by: Arnaldo Carvalho de Melo a...@redhat.com
LPU-Reference: 1438853069-5902-1-git-send-email-milian.wo...@kdab.com
Signed-off-by: Arnaldo Carvalho de Melo a...@redhat.com
---
tools/perf/builtin-trace.c | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index a47497011c93..a25048c85b76 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2773,9 +2773,9 @@ static size_t thread__dump_stats(struct thread_trace
*ttrace,
printed += fprintf(fp, \n);
- printed += fprintf(fp,syscallcalls min avg
max stddev\n);
- printed += fprintf(fp,(msec)(msec)
(msec)(%%)\n);
- printed += fprintf(fp,--- - -
- --\n);
+ printed += fprintf(fp,syscallcallstotal min
avg max stddev\n);
+ printed += fprintf(fp,(msec)(msec)
(msec)(msec)(%%)\n);
+ printed += fprintf(fp,--- - -
- - --\n);
/* each int_node is a syscall */
while (inode) {
@@ -2792,8 +2792,8 @@ static size_t thread__dump_stats(struct thread_trace
*ttrace,
sc = trace-syscalls.table[inode-i];
printed += fprintf(fp,%-15s, sc-name);
- printed += fprintf(fp, %8 PRIu64 %9.3f %9.3f,
- n, min, avg);
+ printed += fprintf(fp, %8 PRIu64 %9.3f %9.3f
%9.3f,
+ n, avg * n, min, avg);
printed += fprintf(fp, %9.3f %9.2f%%\n, max, pct);
}
--
2.1.0
--
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
