39 lines
1.8 KiB
Plaintext
39 lines
1.8 KiB
Plaintext
The following is an example of the writedist.d script,
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Here the writedist.d script is run for a few seconds, then Ctrl-C is hit,
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# writedist.d
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dtrace: description 'sysinfo:::writech ' matched 4 probes
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^C
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[...]
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Xorg
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value ------------- Distribution ------------- count
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16 | 0
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32 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 169
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64 |@@@ 16
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128 |@@ 10
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256 | 0
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gnome-terminal
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value ------------- Distribution ------------- count
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0 | 0
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1 |@@ 6
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2 | 0
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4 | 0
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8 | 1
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16 |@ 2
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32 |@@@ 7
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64 | 0
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128 |@@@@@@@@@@@@@@@@@@@@@@@ 63
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256 |@@@@ 10
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512 | 1
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1024 |@@@@@ 13
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2048 |@ 2
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4096 |@@@ 7
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This allows us to understand the write behaviour of each process. The
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gnome-terminal command has executed 6 writes that returned 0 bytes, through
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to 7 writes that were at least 4096 bytes (up to 8192).
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