potiuk commented on issue #14924:
URL: https://github.com/apache/airflow/issues/14924#issuecomment-911852026


   > I don't get why it would cache files it doesn't even need to look at (when 
I create dummy folder in the logs folder)
   
   Well you do create a cache at the moment you WRITE the file (and when it is 
flushed to disk). This is simply how linux Page Cache write. You can 
specifically prevent the file to be written to cache when you save files but 
this is low-level API and very few systems do it because it has no effect 
besides dropping the metrics.
   
   > Strange thing is that this memory increase is not seen with the web service
   
   With the webserver, you likely already reached the memory limits and the 
whole available memory is used for cache. This is pretty much that happens on 
any long-running system that creates or reads a lot of files. Maybe you can 
compare the limits you have there.
   
   > And finally, what you say is that it doesn't relate to the memory leak 
topic that's it ? or maybe the memory leak is a false flag for the freeze 
@itispankajsingh was concerned about
   
   I do not know that. I am just saying that IF you see 
`container_memory_cache` growing, this is pretty normal and expected and the 
`container_memory_working_set_bytes` is something that you should rather look 
at if you want to see if there is a memory leak.
   
   
   


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