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Diffstat (limited to 'tools/perf/Documentation/examples.txt')
-rw-r--r--tools/perf/Documentation/examples.txt34
1 files changed, 17 insertions, 17 deletions
diff --git a/tools/perf/Documentation/examples.txt b/tools/perf/Documentation/examples.txt
index 8eb6c489fb15..77f952762426 100644
--- a/tools/perf/Documentation/examples.txt
+++ b/tools/perf/Documentation/examples.txt
@@ -17,8 +17,8 @@ titan:~> perf list
17 kmem:kmem_cache_alloc_node [Tracepoint event] 17 kmem:kmem_cache_alloc_node [Tracepoint event]
18 kmem:kfree [Tracepoint event] 18 kmem:kfree [Tracepoint event]
19 kmem:kmem_cache_free [Tracepoint event] 19 kmem:kmem_cache_free [Tracepoint event]
20 kmem:mm_page_free_direct [Tracepoint event] 20 kmem:mm_page_free [Tracepoint event]
21 kmem:mm_pagevec_free [Tracepoint event] 21 kmem:mm_page_free_batched [Tracepoint event]
22 kmem:mm_page_alloc [Tracepoint event] 22 kmem:mm_page_alloc [Tracepoint event]
23 kmem:mm_page_alloc_zone_locked [Tracepoint event] 23 kmem:mm_page_alloc_zone_locked [Tracepoint event]
24 kmem:mm_page_pcpu_drain [Tracepoint event] 24 kmem:mm_page_pcpu_drain [Tracepoint event]
@@ -29,15 +29,15 @@ measured. For example the page alloc/free properties of a 'hackbench
29run' are: 29run' are:
30 30
31 titan:~> perf stat -e kmem:mm_page_pcpu_drain -e kmem:mm_page_alloc 31 titan:~> perf stat -e kmem:mm_page_pcpu_drain -e kmem:mm_page_alloc
32 -e kmem:mm_pagevec_free -e kmem:mm_page_free_direct ./hackbench 10 32 -e kmem:mm_page_free_batched -e kmem:mm_page_free ./hackbench 10
33 Time: 0.575 33 Time: 0.575
34 34
35 Performance counter stats for './hackbench 10': 35 Performance counter stats for './hackbench 10':
36 36
37 13857 kmem:mm_page_pcpu_drain 37 13857 kmem:mm_page_pcpu_drain
38 27576 kmem:mm_page_alloc 38 27576 kmem:mm_page_alloc
39 6025 kmem:mm_pagevec_free 39 6025 kmem:mm_page_free_batched
40 20934 kmem:mm_page_free_direct 40 20934 kmem:mm_page_free
41 41
42 0.613972165 seconds time elapsed 42 0.613972165 seconds time elapsed
43 43
@@ -45,8 +45,8 @@ You can observe the statistical properties as well, by using the
45'repeat the workload N times' feature of perf stat: 45'repeat the workload N times' feature of perf stat:
46 46
47 titan:~> perf stat --repeat 5 -e kmem:mm_page_pcpu_drain -e 47 titan:~> perf stat --repeat 5 -e kmem:mm_page_pcpu_drain -e
48 kmem:mm_page_alloc -e kmem:mm_pagevec_free -e 48 kmem:mm_page_alloc -e kmem:mm_page_free_batched -e
49 kmem:mm_page_free_direct ./hackbench 10 49 kmem:mm_page_free ./hackbench 10
50 Time: 0.627 50 Time: 0.627
51 Time: 0.644 51 Time: 0.644
52 Time: 0.564 52 Time: 0.564
@@ -57,8 +57,8 @@ You can observe the statistical properties as well, by using the
57 57
58 12920 kmem:mm_page_pcpu_drain ( +- 3.359% ) 58 12920 kmem:mm_page_pcpu_drain ( +- 3.359% )
59 25035 kmem:mm_page_alloc ( +- 3.783% ) 59 25035 kmem:mm_page_alloc ( +- 3.783% )
60 6104 kmem:mm_pagevec_free ( +- 0.934% ) 60 6104 kmem:mm_page_free_batched ( +- 0.934% )
61 18376 kmem:mm_page_free_direct ( +- 4.941% ) 61 18376 kmem:mm_page_free ( +- 4.941% )
62 62
63 0.643954516 seconds time elapsed ( +- 2.363% ) 63 0.643954516 seconds time elapsed ( +- 2.363% )
64 64
@@ -158,15 +158,15 @@ Or you can observe the whole system's page allocations for 10
158seconds: 158seconds:
159 159
160titan:~/git> perf stat -a -e kmem:mm_page_pcpu_drain -e 160titan:~/git> perf stat -a -e kmem:mm_page_pcpu_drain -e
161kmem:mm_page_alloc -e kmem:mm_pagevec_free -e 161kmem:mm_page_alloc -e kmem:mm_page_free_batched -e
162kmem:mm_page_free_direct sleep 10 162kmem:mm_page_free sleep 10
163 163
164 Performance counter stats for 'sleep 10': 164 Performance counter stats for 'sleep 10':
165 165
166 171585 kmem:mm_page_pcpu_drain 166 171585 kmem:mm_page_pcpu_drain
167 322114 kmem:mm_page_alloc 167 322114 kmem:mm_page_alloc
168 73623 kmem:mm_pagevec_free 168 73623 kmem:mm_page_free_batched
169 254115 kmem:mm_page_free_direct 169 254115 kmem:mm_page_free
170 170
171 10.000591410 seconds time elapsed 171 10.000591410 seconds time elapsed
172 172
@@ -174,15 +174,15 @@ Or observe how fluctuating the page allocations are, via statistical
174analysis done over ten 1-second intervals: 174analysis done over ten 1-second intervals:
175 175
176 titan:~/git> perf stat --repeat 10 -a -e kmem:mm_page_pcpu_drain -e 176 titan:~/git> perf stat --repeat 10 -a -e kmem:mm_page_pcpu_drain -e
177 kmem:mm_page_alloc -e kmem:mm_pagevec_free -e 177 kmem:mm_page_alloc -e kmem:mm_page_free_batched -e
178 kmem:mm_page_free_direct sleep 1 178 kmem:mm_page_free sleep 1
179 179
180 Performance counter stats for 'sleep 1' (10 runs): 180 Performance counter stats for 'sleep 1' (10 runs):
181 181
182 17254 kmem:mm_page_pcpu_drain ( +- 3.709% ) 182 17254 kmem:mm_page_pcpu_drain ( +- 3.709% )
183 34394 kmem:mm_page_alloc ( +- 4.617% ) 183 34394 kmem:mm_page_alloc ( +- 4.617% )
184 7509 kmem:mm_pagevec_free ( +- 4.820% ) 184 7509 kmem:mm_page_free_batched ( +- 4.820% )
185 25653 kmem:mm_page_free_direct ( +- 3.672% ) 185 25653 kmem:mm_page_free ( +- 3.672% )
186 186
187 1.058135029 seconds time elapsed ( +- 3.089% ) 187 1.058135029 seconds time elapsed ( +- 3.089% )
188 188