<wakandavision 'at' outlook.com> writes: > Optimally I would like to fully use the CPU and get about 3-4 times > more TPS (if even possible). Disclaimer: I'm really not a pg performance expert. I don't understand your hope to fully use the CPU; if your scenario is disk-limited, which may very well be the case, then of course you cannot fully use the CPU. With synchronous commits and fsync, the system is probably spending time just waiting for the disks to report the writes completion. Are iostat/vmstat showing a lot of IO-wait? Also, if you can live with a few lost transactions in case of server crash, synchronous_commit=off is very ok and provides a lot of performance gain. -- Guillaume Cottenceau
