** Also affects: neutron/kilo Importance: Undecided Status: New -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/1557640
Title: DHCP agent logging is causing performance issues Status in neutron: Fix Released Status in neutron kilo series: New Bug description: When a new port gets added or removed, the DHCP agent is currently dumping the entirety of the hosts file in the logs. This is a problem in some deployments we have encountered, some of which with upwards of 10000 ports. Change-Id: I3ad7864eeb2f959549ed356a1e34fa18804395cc removed logging calls from inside the loop. It also added two new log calls: one at the beginning of the loop that builds the hosts file in memory and one at the end, that also includes the full content. Those could be useful pieces of debugging information. However, adding the host file contents can get expensive when there are large numbers of ports. For large numbers of ports, it can take more than one hour for the agent to sync up. The log output contributes a significant amount of that time. This was introduced in Liberty. One reviewer at the time had already expressed concerns about the impact of the log call. Will propose a patch to keep the log message, but remove the file contents. To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1557640/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp