Stupid question - when you say that a query is fast on primary but slow
on standby, are you referring to exactly the same query, including
parameter values?
Yes . It is exactly and exactly the same query with the same parameters.
Yes, it sounds stupid but that is what happening. Though plan
On 21.10.2013 17:05, sparikh wrote:
Stupid question - when you say that a query is fast on primary but
slow on standby, are you referring to exactly the same query,
including parameter values?
Yes . It is exactly and exactly the same query with the same
parameters. Yes, it sounds stupid
Yes, both Explain and Explain Analyse are taking time. As you suggested I set
the lock parameters, but no locks are observed. Also checked
pg_stat_activity and none of the sessions are either waiting are blocked.
I agree we must upgrade to latest version (9.1.10), but unfortunately kind
of
On 21.10.2013 23:18, sparikh wrote:
Yes, both Explain and Explain Analyse are taking time. As you
suggested I set the lock parameters, but no locks are observed. Also
checked pg_stat_activity and none of the sessions are either waiting
are blocked.
Not even the one running the explain?
Yes, Expalin without Analyze is taking long. It is weird. In the
pg_stat_activity Explain was the only query running. So server was almost
idle. Using New relic interface I checked CPU was almost idle - around
10-20%. There were some IO activity - around 40-50%.
I forgot to mention before I could
On 22.10.2013 00:59, sparikh wrote:
Yes, Expalin without Analyze is taking long. It is weird. In the
pg_stat_activity Explain was the only query running. So server was
almost idle. Using New relic interface I checked CPU was almost idle
- around 10-20%. There were some IO activity - around
Do you suggest if I remove all the data files from /data/base folder
of standby and again rebuild using rsync from primary ? do you see
any issues there.? This is just to rule out any fragmentation on
standby side.
The EXPLAIN really should not do much I/O. I doubt it has anything to do
On Oct 22, 2013 1:14 AM, Tomas Vondra t...@fuzzy.cz wrote:
On 22.10.2013 00:59, sparikh wrote:
Yes, Expalin without Analyze is taking long. It is weird. In the
pg_stat_activity Explain was the only query running. So server was
almost idle. Using New relic interface I checked CPU was almost
