libfuzzer: Track the rate of fuzzing in cycles/s. #21025
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This statistic can be entierly calculated on the webui instead of calculating it in the fuzz process if you make the webserver send periodic updates instead of only on new unique input like it is now. |
andrewrk
requested changes
Aug 29, 2024
As libfuzzer develops or as users design their own fuzz tests which use libfuzzer, it will be essential to understand the performance impact of changes. This change tracks the rate of execution in terms of cycles per second and updates the UI at most every second. This is implemented with a periodic update to the web UI which occurs at least every 1 second. The period is not guaranteed to be regular.
andrewrk
requested changes
Sep 10, 2024
| last_cycle_timed.* = n_runs; | ||
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| try web_socket.writeMessage(std.mem.asBytes(&abi.PeriodicUpdateHeader{ | ||
| .cycles_per_second = cycles_per_second, |
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it should be calculated client side.
the only additional thing that needs to be sent by the server is two pieces of static data that are already known when the connection is made:
- what time the server thinks it currently is
- what time according to the server fuzzing started
then the client can do the calculation based on what time it is currently and the number of runs.
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As libfuzzer develops or as users design their own fuzz tests which use libfuzzer, it will be essential to understand the performance impact of changes. This change tracks the rate of execution in terms of cycles per second and updates the UI at most every second.