On 25/2/19 8:52 π.μ., Boris Sagadin wrote:
Doing an initial replica and trying to find a bottleneck, Ubuntu 16.04, NVMe disks, PgSQL v10.7, AWS. With binary replication, DB is replicated at good speed, around 500MB/s. Trying LR now for a big table (about 1.4TB with 2 indexes) and the speed is only about 2MB/s.
Is logical replication subscriber in "streaming" state or in initial snapshot? What's the behavior after the initial snapshot, when it gets into streaming state?
Checked disk util with iostat and only about 20% utilized on master, 15% on target, CPU load on master is low. On slave I can see the "logical replication worker" process is taking about 70% CPU time on a single core, machine has 16 cores.
Is there a setting I am missing here? Any ideas appreciated.
Boris
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Achilleas Mantzios
IT DEV Lead
IT DEPT
Dynacom Tankers Mgmt