Description of problem:
This BZ is for the system components within the MCO (Kubelet and Crio).
Golang 1.12 changed to use MADV_FREE. MADV_FREE is somewhat faster than
MADV_DONTNEED; however, the kernel will not try and reclaim memory in golang processes until the system is memory constrained. Cloud servers can potentially page out executable caches, which can cause IOPS throttles. Since golang 1.16 will be changing the default to MADV_DONTNEED, we are going to enable the flag by default.
Part 1: https://bugzilla.redhat.com/show_bug.cgi?id=1907924
Version-Release number of selected component (if applicable):
Steps to Reproduce:
*** Bug 1916501 has been marked as a duplicate of this bug. ***
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (Moderate: OpenShift Container Platform 4.7.0 security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.