Hi Ignites, I've tried to estimate in runtime how much free memory there are on a node. Looking at memory metrics API, I need a pageSize, number of allocated pages and a fillFactor of these pages.
But it looks like FillFactor metric is broken or useless. A simple test where new entries are put to cache shows next: - number of allocated page is constantly grows which looks ok. - FillFactor metric has weird fluctuation. It seems ok if its value will slightly decreased when new pages allocated, but I observe 2-10+ times difference between checks. Also calculated total used memory can also significanlty decreased. Here is a ticket for this issue [1]. Can someone clarify, is it expected behavior? what is FillFactor metric means? how this can be fixed or how used memory should be calculated if metrics itself is ok? Thoughts? [1] https://issues.apache.org/jira/browse/IGNITE-7489 -- Best regards, Andrey V. Mashenkov
