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27 lines
901 B
27 lines
901 B
4 years ago
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# Concurrency
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## Question
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_How does increasing levels of concurrent client requests affect tail latency, throughput, and the success/error rate of sandbox execution?_
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## Independent Variable
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- The number of concurrent client requests made at a given time
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## Dependent Variables
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- p50, p90, p99, and p100 latency measured in ms
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- throughput measures in requests/second
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- success rate, measures in % of requests that return a 200
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## Assumptions about test environment
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- You have a modern bash shell. My Linux environment shows version 4.4.20(1)-release
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- `hey` (https://github.com/rakyll/hey) is available in your PATH
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- You have compiled `sledgert` and the `empty.so` test workload
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## TODO
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- Harden scripts to validate assumptions
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- Improve error handling in scripts. If `sledgrt` crashes, this charges forward until it hits a divide by error when attempting to clean data that doesn't exist
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