Description of problem (on gluster 3.10.1): It is impossible to configure geo-replication so that replication has low latency, even on links that have < 1ms latency. Questions on how to improve the latency have come up in the past, for example: http://lists.gluster.org/pipermail/gluster-users/2014-May/017272.html Setting the volume option `rollover-time 1` improves the situation (it defaults to 15 seconds delay), but is not fully satisfying, as it can still take up to 3 seconds for a change to be reflected on replication slaves. This is because gsyncd.py has an option op.add_option('--change-interval', metavar='SEC', type=int, default=3) that defaults to 3 seconds and is not configurable from by the user. Please make this setting configurable, so that users can set up low-latency geo replication.
This bug reported is against a version of Gluster that is no longer maintained (or has been EOL'd). See https://www.gluster.org/release-schedule/ for the versions currently maintained. As a result this bug is being closed. If the bug persists on a maintained version of gluster or against the mainline gluster repository, request that it be reopened and the Version field be marked appropriately.