Benchmark JSON RPC endpoints

[frol]

Currently, we reactively increase the number of RPC nodes under load. We want to study our limits, optimize the performance, and keep track of the performance to catch regressions.

In the course of this issue, we should identify the metrics to be collected, set up the framework, and measure the performance.

As a side-product we might help to debug #2313

[frol]

Here is the list of tools that could be useful:

• wrk
• ab (apache benchmark)
• https://github.com/six-ddc/plow

[stale]

This issue has been automatically marked as stale because it has not had recent activity in the last 2 months.
It will be closed in 7 days if no further activity occurs.
Thank you for your contributions.

[bowenwang1996]

@frol what is the status here?

[frol]

We have the benchmarks (https://github.com/near/jsonrpc-benchmark), but we don't run them systematically yet.

P.S. I think we can close this issue now, and open a new one for regression benchmarking later.