Prometheus also writes samples in 120 sample blocks (chunks). These are flushed to disk at a maximum of every 2 hours. So any scrape interval over 1 minute is under-utilizing chunk compression.
On Tue, Jul 7, 2020 at 5:12 PM Stuart Clark <[email protected]> wrote: > On 2020-07-07 15:58, Mathieu Tétreault wrote: > > Hi Brian, > > > > You got me wondering, why scrape intervals shouldn't be over 2minutes? > > Is there anydown side to that? > > > > We are looking toward replacing a legacy system, there is already a > > mysql database that is populated every hour, so that would allow us to > > deploy a first version using the current mysql database, then in the > > following release we could instrument the different applications and > > then remove the mysql database. > > A time series will be marked as stale if it hasn't been updated at least > once every 5 minutes. > > So the standard maximum of 2 minutes ensures there is at least once > update every 5 minutes even if one scrape fails. > > -- > Stuart Clark > > -- > You received this message because you are subscribed to the Google Groups > "Prometheus Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/prometheus-users/6bd0851f14eeb508cd0a9c5801c9e063%40Jahingo.com > . > -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/CABbyFmqfgSzotGcOaWK%3DhkC%2BU4y4TkJKvTqcTvksZHjgJLBVGQ%40mail.gmail.com.
