commit 00ca87fec3b59d24665c7db5886647ea9b2ca114
Author: Pete Vander Giessen <email address hidden>
Date: Wed Feb 27 17:04:19 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/639723 /git.openstack. org/cgit/ openstack/ charm-neutron- openvswitch/ commit/ ?id=00ca87fec3b 59d24665c7db588 6647ea9b2ca114
Committed: https:/
Submitter: Zuul
Branch: master
commit 00ca87fec3b59d2 4665c7db5886647 ea9b2ca114
Author: Pete Vander Giessen <email address hidden>
Date: Wed Feb 27 17:04:19 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: I329ec51eff85a2 a99a929c67ff0c6 8b3b36d7273
Closes-Bug: 1780348