On Tue, 17 Nov 2020, Ružica Prljević wrote:
We have Bucardo 5.5.0, and following set up:
bucardo set vac_run=2
bucardo set vac_sleep=8
VAC daemon should trim bucardo delta and track tables every 2 minutes in
this case from my understanding of Bucardo.
Our client wants to know why we do not implement following cron job:
*/5 * * * * /usr/sbin/bucardo purge all -verbose >/dev/null 2>&1
I have read through commands and documentation and cannot find any
upside for using bucardo purge -all.
Can you please tell me if this command does something that VAC daemon
doesn't?
Rose,
They look about the same to me: they both call the PostgreSQL function
bucardo_purge_delta(text) so they do the same work.
The main difference is that vac_run calls it with argument '45 seconds',
so it only cleans up transactions older than 45 seconds ago, while `purge
all` calls it with argument '1 second', so it will purge almost all
transactions.
In my mind you are already doing it a good way by using the vac_run
facility.
Jon
--
Jon Jensen
End Point Corporation
https://www.endpoint.com/
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