Hi Leon,

Thanks a lot for taking a look at my test and the suggestion.

We have tested this suggestion

echo never > /sys/kernel/mm/transparent_hugepage/enabled

Unfortunately, the Ram usage was the same with this option changed as well.

Just to give some additional context to the original question to all,

We see 10-25 percent more RSS on CentOS 8 ( as compared to CentOS 7) for the same Java vm process that we are benchmarking . And in that case , the RSS growth for the executable and the shared library of our application is considerably higher.

Perhaps, for the big server use cases the rss growth did not matter, but for us, we are trying to use it in an embedded scenario and this is a major issue.

We will be glad to hear any further suggestions/ tests that we could check to further understand the differences between the 2 versions.

Regards,
-Anand