On Mon, Jul 27, 2020 at 1:40 PM Tony Liu <tonyliu0...@hotmail.com> wrote: > > Hi, > > During scaling test, when sb-db is busy, followers believe the leader is dead and started election > request. Some inconsistency happens during such leader switch. Two datapath bindings are created > for the same logical switch. To avoid such case, I was recommended to increase election timer x10. > 4K networks are created successfully with that setting. > > Is it necessary to set big election timer for nb-db as well? The nb-db doesn't seem very busy during > the test, sb-db is always busy and taking 90+% CPU. > NB-DB is usually not busy, but you can still adjust the timer according to your use case.
> With that big election timer, in case real problem happens, like the leader node goes down, is it going > to take a while for the new leader to be elected? > Yes, it will take longer to detect real failures when election timer is bigger. During the gap, control plane operations may be impacted/delayed, but dataplane is not impacted - what's running will continue working, but changes during this time will not be reflected until the failover is done. > > Thanks! > > Tony > > _______________________________________________ > dev mailing list > d...@openvswitch.org > https://mail.openvswitch.org/mailman/listinfo/ovs-dev
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