> Can I split a large file into multiple files and then run copy using
> each file.
AFAIK, copy command locks the table[1] while there is no mention of this
in the documentation[2].
> Will the performance boost by close to 4x??
You might be interested in the pbBulkInsert tool[3] that allows parallel
copy with some succes accordingly to benchmarks. However, that tool does
not handle multiline csv. Because of that limitation I have been using
the standard copy command with binary format with some succes.
[1] https://grokbase.com/t/postgresql/pgsql-general/01597pv3qs/copy-locking
[2] https://www.postgresql.org/docs/current/static/sql-copy.html
[3] https://github.com/bytefish/PgBulkInsert