You run OS command 'free -g' and observe 'buff/cache' gradually increasing to the point where it consumes 85% of total available system memory.
Memory information (in GB):
total used free shared buff/cache available
Mem: 62 5 1 19 55 36
Swap: 59 6 53
buff/cache is memory used by the Linux kernel buffers and page cache.
You force clear buff/cache using the 'echo' command but observe it gradually increase again to 85% memory consumption. Shutting down the SAP NW application and/or database server
does not show buff/cache release any memory.
The SAP environment is running without issue and performing well. Checking the Linux 'messages' log there is no sign of the oom-killer at work.
- Red Hat Enterprise Linux 8.2 (Ootpa)
- NW ABAP Oracle
RHEL RAM /proc/meminfo , KBA , BC-OP-LNX , Linux , Problem
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