On Fri, Jun 14, 2019 at 03:46:30PM +0200, Fabio Pardi wrote: > Maybe of some interest for the past, present and future community, I > benchmarked the impact of wal_log_hints with and without wal_compression > enabled. pgbench data is rather compressible per the format of its attributes, hence I am ready to bet that the compressibility would much much less if you use random text data for example. The amount of WAL generated also depends on the time it takes to run a transactions, and on the checkpoint timing, so I think that would you get better results by using a fixed number of transactions if you use pgbench, but that won't compare as much as a given workload in one session so as you can make sure that the same amount of WAL and full pages get generated. -- Michael
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