Em 17/11/2013 10:00, Michael Paquier escreveu:
On Sun, Nov 17, 2013 at 8:25 PM, Stefan Keller <sfkeller@xxxxxxxxx> wrote:
How can Postgres be used and configured as an In-Memory Database?
Does anybody know of thoughts or presentations about this "NoSQL feature" -
beyond e.g. "Perspectives on NoSQL" from Gavin Roy at PGCon 2010)?
Given, say 128 GB memory or more, and (read-mostly) data that fit's into
this, what are the hints to optimize Postgres (postgresql.conf etc.)?
In this case as you are trading system safety (system will not be
crash-safe) for performance... The following parameters would be
suited:
- Improve performance by reducing the amount of data flushed:
fsync = off
synchronous_commit=off
- Reduce the size of WALs:
full_page_writes = off
- Disable the background writer:
bgwriter_lru_maxpages = 0
Regards,
One question: would you please expand your answer and explain how would
this adversely affect async replication?
Edson
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