Hi,Ben,many thanks, I used "prometheus_tsdb_head_series" and "prometheus_tsdb_head_chunks" to check my prometheus,and the results are as follows.But I don't think I really understand what it means.For example,how much memory does one serie or chunk take?Would you tell me how to understand the result ?Thank you very much!
在 2020年7月8日星期三 UTC+8下午4:07:00，Ben Kochie写道： > > Prometheus memory use depends on how much data you're feeding it. > > Look at prometheus_tsdb_head_series > and rate(prometheus_tsdb_head_samples_appended_total[5m]). > > I usually recommend planning to shard your Prometheus by namespace when > the head series is over 2 million. > > On Wed, Jul 8, 2020 at 9:44 AM 白洋洋 <[email protected] <javascript:>> > wrote: > >> Ok,thank you .But the expression >> "container_memory_usage_bytes{container_name="prometheus"}", which is a >> metrics of kubernetes-cadvisor, shows the memory that Prometheus used is >> about 33G,Isn't it a little too high？Is it that most of this memory is >> cache, and we don't need to worry about it?（The memory of the computer is >> 48G） >> >> 在 2020年7月8日星期三 UTC+8下午2:56:08，Ben Kochie写道： >>> >>> Prometheus only uses what memory it needs. You can see this >>> with process_resident_memory_bytes and go_memstats_alloc_bytes. Cache >>> memory is not part of Prometheus, it is controlled by the kernel. >>> >>> On Wed, Jul 8, 2020 at 8:47 AM 白洋洋 <[email protected]> wrote: >>> >>>> >>>> The picture below shows the memory that Prometheus used.As we can >>>> see,the average memory is about 33G,and that's a lot of memory.Then I use >>>> the command "free -h" to check the memory usage.The result is shown that >>>> the most memory the prometheus used is cache.Would you tell me What is >>>> the Prometheus's memory elimination strategy?Under what circumstances will >>>> Prometheus clean up the cache ?Thank you. >>>> >>>> -- >>>> 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/5739771b-3d2a-4d8a-9577-c04d40d7c926o%40googlegroups.com >>>> >>>> <https://groups.google.com/d/msgid/prometheus-users/5739771b-3d2a-4d8a-9577-c04d40d7c926o%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>> -- >> 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] <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/prometheus-users/4361317e-718e-4be9-bb06-4b5a21775dd1o%40googlegroups.com >> >> <https://groups.google.com/d/msgid/prometheus-users/4361317e-718e-4be9-bb06-4b5a21775dd1o%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- 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/9f3bd46e-ebcb-4e22-bc1a-30bf5c2186bbo%40googlegroups.com.
