commit c9a19c40777ea40d64c22070c1346c14708fabdf
Author: Pete Vander Giessen <email address hidden>
Date: Wed Feb 27 15:50:05 2019 +0100
Added gc_threshold overrides to sysctl.conf
When clouds have a large number of hosts, the default size of the ARP
cache is too small. The cache can overflow, which means that the
system has no way to reach some ip addresses.
Setting the threshold limits higher addresses the situation, in a
reasonably safe way (the maximum impact is 5MB or so of additional RAM
used). Docs on ARP at http://man7.org/linux/man-pages/man7/arp.7.html,
and more discussion of the issue in the bug.
Reviewed: https:/ /review. openstack. org/639984 /git.openstack. org/cgit/ openstack/ charm-nova- compute/ commit/ ?id=c9a19c40777 ea40d64c22070c1 346c14708fabdf
Committed: https:/
Submitter: Zuul
Branch: master
commit c9a19c40777ea40 d64c22070c1346c 14708fabdf
Author: Pete Vander Giessen <email address hidden>
Date: Wed Feb 27 15:50:05 2019 +0100
Added gc_threshold overrides to sysctl.conf
When clouds have a large number of hosts, the default size of the ARP
cache is too small. The cache can overflow, which means that the
system has no way to reach some ip addresses.
Setting the threshold limits higher addresses the situation, in a man7.org/ linux/man- pages/man7/ arp.7.html,
reasonably safe way (the maximum impact is 5MB or so of additional RAM
used). Docs on ARP at http://
and more discussion of the issue in the bug.
Change-Id: Iaf8382ee0b42e1 444cfea589bb05a 687cd0c23fa
Closes-Bug: 1780348