| From: | Jeff Janes <jeff(dot)janes(at)gmail(dot)com> |
|---|---|
| To: | Madhu Sudan <madhusudan0429(at)gmail(dot)com> |
| Cc: | pgsql-admin(at)lists(dot)postgresql(dot)org |
| Subject: | Re: WAL restore is very slow |
| Date: | 2022-08-29 20:38:08 |
| Message-ID: | CAMkU=1ze_yqq_PtKBzNWgmY_1yz06Oeev0w=DJ6burB7S-8ZzA@mail.gmail.com |
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| Lists: | pgsql-admin |
On Mon, Aug 29, 2022 at 6:10 AM Madhu Sudan <madhusudan0429(at)gmail(dot)com>
wrote:
> Hi
>
> We have PG-14 with a huge data set of 14 TB running on r5b.2xlarge. We
> have set up WAL archiving and restoring them onto a replica server. The WAL
> restore on the replica is very slow and we are not able to achieve the 4
> hour delayed replica. It is always behind 30 hrs with the huge WAL
> generation.
>
> I have checked the following and they look fine
> 1. Bottlenecks on the replica server
>
How did you check for bottlenecks, and what did you see to conclude it
looked fine? Clearly there is a bottleneck somewhere.
Cheers,
Jeff
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