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perf diff: Change the default sort order to "dso,symbol"

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This is a more intuitive / more meaningful default:

$ perf diff | head -8
     9.02%     +1.00%  libc-2.10.1.so               [.] _IO_vfprintf_internal
     2.91%     -1.00%  [kernel]                     [k] __kmalloc
     2.85%     -1.00%  [kernel]                     [k] ext4_htree_store_dirent
     1.99%     -1.00%  [kernel]                     [k] _atomic_dec_and_lock
     2.44%             [kernel]
$

Suggested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1260979793-1981-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Arnaldo Carvalho de Melo 2009-12-16 14:09:53 -02:00 committed by Ingo Molnar
parent c351c28161
commit 604c5c9297
1 changed files with 2 additions and 0 deletions
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2
tools/perf/builtin-diff.c
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@ -18,6 +18,7 @@
static char const *input_old = "perf.data.old", static char const *input_old = "perf.data.old",
*input_new = "perf.data"; *input_new = "perf.data";
static char diff__default_sort_order[] = "dso,symbol";
static int force; static int force;
static bool show_displacement; static bool show_displacement;
@ -220,6 +221,7 @@ static const struct option options[] = {
int cmd_diff(int argc, const char **argv, const char *prefix __used) int cmd_diff(int argc, const char **argv, const char *prefix __used)
{ {
sort_order = diff__default_sort_order;
argc = parse_options(argc, argv, options, diff_usage, 0); argc = parse_options(argc, argv, options, diff_usage, 0);
if (argc) { if (argc) {
if (argc > 2) if (argc > 2)