[Bucardo-general] Monitoring Stats / bucardo_rrd

[Greg Sabino Mullane]

On Fri, May 17, 2013 at 03:51:49PM +0100, Mike Tonks wrote:
> I'm not certain the lag time is measured correctly.  If bucardo is
> stopped then the most recent delta should give a good metric, but if
> bucardo is running I'm not sure how to do this.

I'm not sure the code is doing the right thing. This looks good:

select count(*) from $delta_table where txntime 
  not in (select txntime from $track_table);

Note that you should be considering bucardo_delta_targets as well, 
but that can be overlooked on the first round. Or ignored, if 
we simply want to count a row as done if it went *somewhere*. 
See for example line 1826 of bucardo.schema in HEAD (or grep 
for "Are older than the first argument interval")

Then:

SELECT round(extract( epoch from current_timestamp - 
  (SELECT MAX(txntime) AS delta_ts FROM $delta_table) ))

Wouldn't you want min(txntime) of the unprocessed ones?

-- 
Greg Sabino Mullane greg at endpoint.com
End Point Corporation
PGP Key: 0x14964AC8
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