how does it scale with multi core / threads?

[ouvaa]

do you have anything for 48 threads performance benchmarks?

most golang software cant scale beyond 24 cores.

[lni]

I don't have access to any machine with more than 24 cores. Also interested to know what makes you believe that 24 cores is the typical optimal for Golang, any concrete stats/benchmark results on that?

[sprappcom]

@lni golang/go#65064

[lni]

Thanks for the link.

I haven't tested on anything more than 24 physical cores, as that is already enough to support thousands of replicas per server. When more replicas are required in the whole, you definitely want them to be spread across many different servers.

The biggest performance bottleneck is the fsync performance, not the thread count, having faster SSDs with good fsync performance is the key here. Having more cores might help, but I think it is far less so when compared to faster cores and faster SSDs.