Re: Low performance between datacenters

On 8/7/2024 01:17, Tamás PAPP wrote:
> hi All,
> 
> I am new on the list.
> I hope someone can give me an adequate answer or good advice about my 
> problem.
> 
> I have a client (normally a web service, for testing the psql client) in 
> GCP. There is a PSQL server in another DC. The ping response time is 20ms.
> I measured the bandwidth via scp and it is more than 1Gb/s which is more 
> than enough IMO.
> 
> 
> The psql connection between the DCs for me was unexpectedly slow.
> I would expect a bit slower query without data ('select now()') due to 
> the increased latency and somewhat similar speed of data transfer.
> What I see is that
> 
> select now() increased from 0.7ms to 20ms which is OK.
> And 'select *' on a table with 3082 rows (so it's a small table) 
> increased from 10ms to 800ms.
> 
> 
> Is this normal? Can I improve it somehow?
This subject is totally new for me, but maybe you have different 
connection settings for internal and external connections? I mean - from 
different networks?

-- 
regards, Andrei Lepikhov