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] <javascript:>>
> 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.
>>
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>>
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