commit 53b58388d37a3b2b2674989e09c216ae7ce76c9e
Author: Pete Vander Giessen <email address hidden>
Date: Wed Feb 27 16:04:27 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/639985 /git.openstack. org/cgit/ openstack/ charm-neutron- gateway/ commit/ ?id=53b58388d37 a3b2b2674989e09 c216ae7ce76c9e
Committed: https:/
Submitter: Zuul
Branch: master
commit 53b58388d37a3b2 b2674989e09c216 ae7ce76c9e
Author: Pete Vander Giessen <email address hidden>
Date: Wed Feb 27 16:04:27 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: I701141784224f5 f870f6da73a24be d8015694409
Closes-Bug: 1780348