| From: | Magnus Hagander <magnus(at)hagander(dot)net> |
|---|---|
| To: | Ayub Khan <ayub(dot)hp(at)gmail(dot)com> |
| Cc: | Pgsql Performance <pgsql-performance(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: waiting for client write |
| Date: | 2021-06-09 14:49:38 |
| Message-ID: | CABUevEwL3=PLSOfX3w=a3YtHga8HkwQDLhFmLWAyLqkcYofaYQ@mail.gmail.com |
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| Lists: | pgsql-performance |
On Wed, Jun 9, 2021 at 4:47 PM Ayub Khan <ayub(dot)hp(at)gmail(dot)com> wrote:
>
> attached is the screenshot of RDS performance insights for AWS and it shows high waiting client writes. The api performance is slow. I read that this might be due to IOPS on RDS. However we have 80k IOPS on this test RDS.
>
ClientWrite means Postgres is waiting on the *network* sending the
reply back to the client, it is unrelated to I/O. So either your
client isn't consuming the response fast enough, or the network
between them is too slow or shaped.
--
Magnus Hagander
Me: https://www.hagander.net/
Work: https://www.redpill-linpro.com/
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