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Published 20 hours ago • verified publisher icon rust-lang

Website performance

Open theotherphil opened this issue 1 year ago • 3 comments

Viewing graphs on perf.rust-lang.org often takes a long time, seemingly mainly spent waiting for a response from the server when loading data:

image

Are the current bottlenecks here already well understood?

theotherphil avatar Sep 24 '23 18:09 theotherphil

Well, I expect that the bottleneck is clear, it's the database :) So I guess that the way to make it faster would be to use the classic tricks: adding indices, caching etc. The DB has been acting a bit strangely recently. It contains relatively large amounts of data, and there may be dragons.

We don't have any telemetry nor profiling setup at the moment, so that would also be useful to confirm my "hypothesis" :)

Kobzol avatar Sep 24 '23 18:09 Kobzol

Can you say more about the specific request you were making? 30 seconds feels like it's on the high side to me. I'm general, the graph page processes a lot of data, and does so generally through lots of point queries to the database which isn't super fast.

Mark-Simulacrum avatar Sep 24 '23 18:09 Mark-Simulacrum

The homepage took around this long to load. The 30s wait time in the screenshoot came from leaving the start and end dates empty and choosing "context-switches" as the desired metric.

https://perf.rust-lang.org/?kind=raw&stat=context-switches

theotherphil avatar Sep 24 '23 18:09 theotherphil