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neondatabase / neon

Neon: Serverless Postgres. We separated storage and compute to offer autoscaling, code-like database branching, and scale to zero.
https://neon.tech
Apache License 2.0
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bench: failure to startup after templating #8800

Open koivunej opened 4 weeks ago

koivunej commented 4 weeks ago

Example:

basebackup with high slru count prepares a single tenant which is then templated to multiple tenants, and those are being basebackupped. In this preparation phase in the test there shutdown of the NeonEnv.

The environment assumption is that we run the benches on our small runners and we do not overprovision the runners (for example, running two unrelated github jobs on the same instance). Is it plausible that the runner had really a pause of 10 seconds OR is it more likely that the previous benchmarks had left the system in such a state that it required 10 seconds for writing out the dirty bytes?

koivunej commented 4 weeks ago

Idea: run sync(1) after each bench.