"Are the TPS numbers per pgbench? If so, then you're getting
10x490=4900 TPS system wide, or 20*280=5600 TPS system wide. "
Per pgbench.
Your explanation makes sense. thanks.
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On Thu, Nov 17, 2016 at 8:08 PM, Rakesh Kumar
wrote:
> I noticed that as I scale from 5 to 10 to 20 to 40, the TPS starts falling
> almost linearly :
>
> with 5, TPS was doing 639
> with 10 TPS was down to 490
> with 20 TPS was down to 280
> and so on.
Are the TPS numbers per pgbench? If so, the
I forgot to mention that the db is replicated synchronously. I think that is
the culprit.
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PG 9.5.3
RHEL Linux
To cut the story short and giving as much details as I can remember:
I created 40 database db1 .. db40 in a cluster.
On each database I initialized pgbench tables with a scale of 15.
Then I concurrently ran 5 pgbenches for 15 min. Each pgbench connected to one
db. In other w
