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Diffstat (limited to 'cddl/contrib/dtracetoolkit/Examples/dispqlen_example.txt')
| -rw-r--r-- | cddl/contrib/dtracetoolkit/Examples/dispqlen_example.txt | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/cddl/contrib/dtracetoolkit/Examples/dispqlen_example.txt b/cddl/contrib/dtracetoolkit/Examples/dispqlen_example.txt deleted file mode 100644 index f3542c0..0000000 --- a/cddl/contrib/dtracetoolkit/Examples/dispqlen_example.txt +++ /dev/null @@ -1,62 +0,0 @@ -This is a demonstration of the dispqlen.d script, - - -Here we run it on a single CPU desktop, - - # dispqlen.d - Sampling... Hit Ctrl-C to end. - ^C - CPU 0 - value ------------- Distribution ------------- count - < 0 | 0 - 0 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 1790 - 1 |@@@ 160 - 2 | 10 - 3 | 0 - -The output shows the length of the dispatcher queue is mostly 0. This is -evidence that the CPU is not very saturated. It does not indicate that the -CPU is idle - as we are measuring the length of the queue, not what is -on the CPU. - - - -Here it is run on a multi CPU server, - - # dispqlen.d - Sampling... Hit Ctrl-C to end. - ^C - CPU 1 - value ------------- Distribution ------------- count - < 0 | 0 - 0 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 1573 - 1 |@@@@@@@@@ 436 - 2 | 4 - 3 | 0 - - CPU 4 - value ------------- Distribution ------------- count - < 0 | 0 - 0 |@@@@@@@@@@@@@@@@@@@@@@ 1100 - 1 |@@@@@@@@@@@@@@@@@@ 912 - 2 | 1 - 3 | 0 - - CPU 0 - value ------------- Distribution ------------- count - < 0 | 0 - 0 |@@@@@@@@@@@@@@@@@ 846 - 1 |@@@@@@@@@@@@@@@@@@@@@@@ 1167 - 2 | 0 - - CPU 5 - value ------------- Distribution ------------- count - < 0 | 0 - 0 |@@@@@@@@ 397 - 1 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 1537 - 2 |@@ 79 - 3 | 0 - -The above output shows that threads are queueing up on CPU 5 much more than -CPU 0. - |
