i have a strange memory behavior on a AIX 7.1 System, which i cannot explain.
The Filesystem-Cache will not be grow up and drops often after few minutes. I know if a file was deleted, that the same segment in the FS-Cache will also be cleared. But i am not sure if this is the correct explanation for "my" behavior.
In one test i read a file (dd if=<some file> of=/dev/null) and after the dd finished the fs-cache (file pages) immediately droped out of the memory, but i couldn't reproduce this test.
Does anyone have an idea?
Thanks
P.S.
- tunables like vmo or schedo was not changed
- the System has a lot of nfs V3 exports
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