7

Also, new metric will not be query-able until it has been flushed to disk/whisper.

Any benchmark around reading performance for clickhouse as backend storage ? curious if it's scalable in reading heavily case.

Thanks!

hmm... i tried that locally, looks like it even takes several seconds for single metric query...

a little weird, it takes 10s to finish a query in most cases, but in rare cases, it responds quickly.

looks like the very first request takes long time, and subsequent requests look fine. But if wait for some time, and try send query again. Then, it takes long time...

ok, i got it, is there any reason we keep it 3 `3` ?

It still takes around 10s if we make the second request after 3seconds. So looks like connecting to clickhouse takes time, after increasing keep-alive-time, subsequent query looks pretty fine. Not...

I'm using ssd, even it hit disk, it should not take 10s though

Thanks for the info, my benchmark shows it could serve around ~40rq/s, sort of lower than what i expect, and relative high lat than regular graphite. I can see great...