Commit-ID: 6278af660ff83fbafb18e53fc2747eb2ee6780fa
Gitweb: http://git.kernel.org/tip/6278af660ff83fbafb18e53fc2747eb2ee6780fa
Author: Mike Galbraith <efault@xxxxxx>
AuthorDate: Thu, 2 Apr 2009 10:40:28 +0200
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Tue, 7 Apr 2009 11:32:22 +0200
perf_counter tools: kerneltop: display per function percentage along with event count
------------------------------------------------------------------------------
KernelTop: 90551 irqs/sec kernel:15.0% [NMI, 100000 CPU cycles], (all, 4 CPUs)
------------------------------------------------------------------------------
events pcnt RIP kernel function
______ ______ _____ ________________ _______________
16871.00 - 19.1% - ffffffff80328e20 : clear_page_c
8810.00 - 9.9% - ffffffff8048ce80 : page_fault
4746.00 - 5.4% - ffffffff8048cae2 : _spin_lock
4428.00 - 5.0% - ffffffff80328e70 : copy_page_c
3340.00 - 3.8% - ffffffff80329090 : copy_user_generic_string!
2679.00 - 3.0% - ffffffff8028a16b : get_page_from_freelist
2254.00 - 2.5% - ffffffff80296f19 : unmap_vmas
2082.00 - 2.4% - ffffffff80297e19 : handle_mm_fault
1754.00 - 2.0% - ffffffff80288dc8 : __rmqueue_smallest
1553.00 - 1.8% - ffffffff8048ca58 : _spin_lock_irqsave
1400.00 - 1.6% - ffffffff8028cdc8 : release_pages
1337.00 - 1.5% - ffffffff80285400 : find_get_page
1335.00 - 1.5% - ffffffff80225a23 : do_page_fault
1299.00 - 1.5% - ffffffff802ba8e7 : __d_lookup
1174.00 - 1.3% - ffffffff802b38f3 : __link_path_walk
1155.00 - 1.3% - ffffffff802843e1 : perf_swcounter_ctx_event!
1137.00 - 1.3% - ffffffff8028d118 : ____pagevec_lru_add
963.00 - 1.1% - ffffffff802a670b : kmem_cache_alloc
885.00 - 1.0% - ffffffff8024bc61 : __wake_up_bit
Display per function percentage along with event count.
Signed-off-by: Mike Galbraith <efault@xxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
Documentation/perf_counter/kerneltop.c | 45 ++++++++++++++++---------------
1 files changed, 23 insertions(+), 22 deletions(-)
diff --git a/Documentation/perf_counter/kerneltop.c b/Documentation/perf_counter/kerneltop.c
index 4f8d791..15f3a5f 100644
--- a/Documentation/perf_counter/kerneltop.c
+++ b/Documentation/perf_counter/kerneltop.c
@@ -636,16 +636,20 @@ static void print_sym_table(void)
int counter;
float events_per_sec = events/delay_secs;
float kevents_per_sec = (events-userspace_events)/delay_secs;
+ float sum_kevents = 0.0;
events = userspace_events = 0;
memcpy(tmp, sym_table, sizeof(sym_table[0])*sym_table_count);
qsort(tmp, sym_table_count, sizeof(tmp[0]), compare);
+ for (i = 0; i < sym_table_count && tmp[i].count[0]; i++)
+ sum_kevents += tmp[i].count[0];
+
write(1, CONSOLE_CLEAR, strlen(CONSOLE_CLEAR));
printf(
"------------------------------------------------------------------------------\n");
- printf( " KernelTop:%8.0f irqs/sec kernel:%3.1f%% [%s, ",
+ printf( " KernelTop:%8.0f irqs/sec kernel:%4.1f%% [%s, ",
events_per_sec,
100.0 - (100.0*((events_per_sec-kevents_per_sec)/events_per_sec)),
nmi ? "NMI" : "IRQ");
@@ -679,34 +683,31 @@ static void print_sym_table(void)
printf("------------------------------------------------------------------------------\n\n");
if (nr_counters == 1)
- printf(" events");
+ printf(" events pcnt");
else
- printf(" weight events");
+ printf(" weight events pcnt");
printf(" RIP kernel function\n"
- " ______ ______ ________________ _______________\n\n"
+ " ______ ______ _____ ________________ _______________\n\n"
);
- printed = 0;
- for (i = 0; i < sym_table_count; i++) {
+ for (i = 0, printed = 0; i < sym_table_count; i++) {
+ float pcnt;
int count;
- if (nr_counters == 1) {
- if (printed <= 18 &&
- tmp[i].count[0] >= count_filter) {
- printf("%19.2f - %016llx : %s\n",
- sym_weight(tmp + i), tmp[i].addr, tmp[i].sym);
- printed++;
- }
- } else {
- if (printed <= 18 &&
- tmp[i].count[0] >= count_filter) {
- printf("%8.1f %10ld - %016llx : %s\n",
- sym_weight(tmp + i),
- tmp[i].count[0],
- tmp[i].addr, tmp[i].sym);
- printed++;
- }
+ if (printed <= 18 && tmp[i].count[0] >= count_filter) {
+ pcnt = 100.0 - (100.0*((sum_kevents-tmp[i].count[0])/sum_kevents));
+
+ if (nr_counters == 1)
+ printf("%19.2f - %4.1f%% - %016llx : %s\n",
+ sym_weight(tmp + i),
+ pcnt, tmp[i].addr, tmp[i].sym);
+ else
+ printf("%8.1f %10ld - %4.1f%% - %016llx : %s\n",
+ sym_weight(tmp + i),
+ tmp[i].count[0],
+ pcnt, tmp[i].addr, tmp[i].sym);
+ printed++;
}
/*
* Add decay to the counts:
--
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