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94 lines
4.1 KiB
Plaintext
94 lines
4.1 KiB
Plaintext
The following is an example of the intoncpu.d script.
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Here we run it for a few seconds then hit Ctrl-C,
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# ./intoncpu.d
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Tracing... Hit Ctrl-C to end.
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^C
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uhci1
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value ------------- Distribution ------------- count
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2048 | 0
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4096 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 2
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8192 | 0
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uhci0
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value ------------- Distribution ------------- count
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512 | 0
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1024 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 16
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2048 |@@@@ 2
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4096 |@@ 1
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8192 |@@ 1
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16384 | 0
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rtls0
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value ------------- Distribution ------------- count
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512 | 0
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1024 |@@@@@@@@@@@@@@@@ 8
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2048 |@@@@@@@@@@ 5
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4096 |@@@@@@ 3
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8192 | 0
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16384 |@@ 1
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32768 |@@ 1
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65536 |@@@@ 2
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131072 | 0
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The rtls0 driver (the network interface) has encourtered the most interrupts,
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with the time taken to process each interrupt visible as a distribution.
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These times ranged from around 1000 ns (1 us), to at least 65536 ns (65 us).
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To determine which devices the instance names represent (eg, "uhci1"), the
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/etc/path_to_inst file could be examied.
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The following is a longer example of running intoncpu.d,
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# ./intoncpu.d
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Tracing... Hit Ctrl-C to end.
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^C
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uhci1
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value ------------- Distribution ------------- count
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2048 | 0
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4096 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 6
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8192 | 0
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ata1
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value ------------- Distribution ------------- count
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8192 | 0
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16384 |@@@@@@@@@@@@@@@@@@@@ 2
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32768 |@@@@@@@@@@@@@@@@@@@@ 2
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65536 | 0
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ata0
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value ------------- Distribution ------------- count
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2048 | 0
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4096 |@@@@@@@@@@@@@ 55
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8192 |@@@@@@@@@@@@@@@@@@@@@@@@@@ 113
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16384 |@ 5
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32768 | 0
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uhci0
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value ------------- Distribution ------------- count
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512 | 0
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1024 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 1288
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2048 |@@ 53
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4096 | 6
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8192 | 0
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rtls0
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value ------------- Distribution ------------- count
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512 | 0
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1024 |@@@@@@@@@@@@@@@@@@@@ 665
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2048 |@@@@@@@@@ 307
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4096 |@ 35
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8192 | 0
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16384 |@@@@@@@ 229
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32768 |@@@ 91
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65536 |@ 19
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131072 | 1
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262144 | 0
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