| From: | Daulat Ram <Daulat(dot)Ram(at)exponential(dot)com> |
|---|---|
| To: | "pgsql-general(at)lists(dot)postgresql(dot)org" <pgsql-general(at)lists(dot)postgresql(dot)org> |
| Subject: | Memory settings |
| Date: | 2019-06-30 03:13:52 |
| Message-ID: | BL0PR01MB518712C1669BEF5B78F67FFB9BFE0@BL0PR01MB5187.prod.exchangelabs.com |
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| Lists: | pgsql-general |
Can you please suggest what will be the suitable memory settings for Postgresql11 if we have 80gb RAM, 16 CPU's and OS Linux.
If we set 25 % of total RAM then shared_buffers value will be 20GB. Will it be useful or we can set it any random vale like 8g or 12gb.
According to https://pgtune.leopard.in.ua/#/
below are the suggested memory values for 80gb RAM and 16 CPU. I assume the values preferred for effective_cache_size = 60GB and shared_buffers = 20GB are too large.
max_connections = 500
shared_buffers = 20GB
effective_cache_size = 60GB
maintenance_work_mem = 2GB
checkpoint_completion_target = 0.7
wal_buffers = 16MB
default_statistics_target = 100
random_page_cost = 1.1
effective_io_concurrency = 300
work_mem = 6553kB
min_wal_size = 1GB
max_wal_size = 2GB
max_worker_processes = 16
max_parallel_workers_per_gather = 8
max_parallel_workers = 16
Please give your suggestions.
Regards,
Daulat
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