In general, AWS RDS does not set shared_buffers in a manner similar to the community version. From the AWS documentation, the recommendation is to set it at 75% of the instance’s memory size. So, does the 8Gb that you’re requesting match the 75% recommendation? And if I’m not mistaken about this, you could use the database parameter group to set this to the 8Gb level without using any sort of calculation.
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Jay
Sent from my iPad
On Jan 28, 2021, at 7:35 AM, dbatoCloud Solution <dbatocloud17@gmail.com> wrote:
Hi All,
I want to increase the size of shared_buffers in AWS RDS postgreSQL 10.11. When I see it in the DB parameter group in AWS it says "SUM({DBInstanceClassMemory/12038},-50003)" and at the instance level I see 2694408 .
Please let me know how to calculate and change the value for 8GB?
Thanks & Best Wishes,
Ashok
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Ashokkumar Mani (OCP12c/11g/10g/9i, AWS SAA, M103)
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