On 1/21/25 09:38, Durgamahesh Manne wrote:
Hi Adrian Klaver
Really Thanks for your quick response
This happened during repack lag went to more than 350Gb then gradually
decreased to minimal lag after running pg_repack
I don't use pg_repack so I don't know what effect it would have on the
process.
3) Define how lag is being calculated and what 'minimal' is.
postgres=> select
slot_name,pg_wal_lsn_diff(pg_current_wal_lsn(),restart_lsn) as bytes_behind,
pg_size_pretty(pg_wal_lsn_diff(pg_current_wal_lsn(), restart_lsn)) as
behind_size, active from pg_replication_slots;
slot_name | bytes_behind | behind_size | active
-------------+--------------+-------------+--------
cls_eva_msa | 22906216 | 22 MB | t
4) Define how the record counts are being derived.
Source : archiving=> select count(*) from archiving.events_archive ;
count
---------
1262908
(1 row)
Destination : archiving=> select count(*) from archiving.events_archive ;
count
---------
1252062
(1 row)
22,906,216 bytes/10,846 rows works out to 2112 bytes per row.
Is that a reasonable per row estimate?
5) The network distance between the servers.
Both are under same vpc security groups
Regards
Durga Mahesh
--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx
