During certain interval there is huge WAL file generation f3om primary around 300gb/hr which delays sync in secondary by atleast 30 mins. Other time it is normal
On Fri, Dec 9, 2022 at 4:20 PM, Laurenz Albe
<laurenz.albe@xxxxxxxxxxx> wrote:
On Fri, 2022-12-09 at 08:47 +0000, Bryon Roché wrote:
> On December 9, 2022 5:02:59 AM UTC, SASIKUMAR Devaraj <
sashikumard@xxxxxxxxx> wrote:
> > How to speed up WAL apply process in secondary? Any parameter available from postgres, apart from disk speed?
>
> There are fsync parameters which can be set to off that may provide a modest speed increase, at the cost of removing crash safety.
That is spectacularly bad advice.
Is the disk the bottleneck at all?
Yours,
Laurenz Albe
