Re: Improving PostgreSQL insert performance

Alvaro>Something like
INSERT INTO .. VALUES ('col1', 'col2'), ('col1', 'col2'), ('col1', 'col2')>I
did not
Frits>try that, to be honest.

pgjdbc does automatically rewrite insert values(); into insert ...
values(),(),(),() when reWriteBatchedInserts=true. I don't expect manual
multivalues to be noticeably faster there.

Frits>https://etc.to/confluence/display/~admjal/PostgreSQL+performance+tests

Do you really intend to measure just a single insert operation?
It looks odd, as typical applications would execute inserts for quite a
while before they terminate.

You are including lots of warmup overheads (e.g. JIT-compilation), so your
approach does not measure peak performance.
On the other hand, you are not measuring enough time to catch things like
"DB log switch".

Would you please use JMH as a load driver?
Here's an example:
https://github.com/pgjdbc/pgjdbc/blob/master/ubenchmark/src/main/java/org/postgresql/benchmark/statement/InsertBatch.java

Vladimir

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