High memory ussage but sum of process memory is low and drivers memory does not leak

1

My Windows Server occasionally get very slowly. I suspect it is due to RAM because when restart machine then everything works fine until some time when this happen again. Also if I sum memory consumption of all processes visible in Task Manager they occupy smaller RAM than Task Manager states. I've also read articles that those symptoms are often if some drivers causes memory leaks. But in my case I do not have high Non-Paged pool as it is described in those articles. Bellow are screenshots from my box. Are there any other tools which can help me troubleshoot this problem? Thanks

System info: enter image description here

Taskmgr processes enter image description here

Taskmkgr performance enter image description here

Poolmon enter image description here

RAMmap Use Counts enter image description here

RAMmap process (ordered by total) enter image description here

RAMmap process (ordered by standby) enter image description here

RAMmap process (ordered by private) enter image description here

RAMmap process (ordered by pagetable) enter image description here

RAMmap process (ordered by modified) enter image description here

Wakan Tanka

Posted 2018-07-03T09:09:32.470

Reputation: 609

Please show a screen cap of poolmon showing paged pool (keep pressing "P" until the second column shows only "NonP"). But just based on RAMmap's output, nearly a gigabyte of nonpaged pool on an 8 GB machine, almost all of it in kernel stacks, is very much excessive. Kernel stacks come one to a thread, so it's likely that some process is (or several processes are) leaking threads - probably not closing their handles. Performance Analyzer will help you find the culprit(s). Task Manager "details" tab, with the "Handles", "Threads" and "NonP Pool" columns added, may help you find it. – Jamie Hanrahan – 2018-07-03T14:56:04.903

No answers

Asked: 2018-07-03T09:09:32.470

Viewed: 1 752 times

Active: 2018-07-03T09:09:32.470