| Examples of urandomread.py, the Linux eBPF/bcc version. |
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| To demonstrate this, the following workload was issued: |
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| # dd if=/dev/urandom of=/dev/null bs=1k count=5 |
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| While urandomread.py was tracing in another session: |
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| # ./urandomread.py |
| TIME(s) COMM PID GOTBITS |
| 22592556.392825000 dd 14228 8192 |
| 22592556.392949000 dd 14228 8192 |
| 22592556.393068999 dd 14228 8192 |
| 22592556.393183999 dd 14228 8192 |
| 22592556.393298000 dd 14228 8192 |
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| The GOTBITS of 8192 matches the workload of 1 Kbyte (8 Kbit) reads. |
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| This program was really written as a simple example of tracing a tracepoint. |
