Thanks, good read. Mostly what I assumed. This is mostly for us, I don’t really have the bandwidth to work on Core as well. But if our observations can help that’s great.
Note that the Linux build slowed considerably, so it finished 840k blocks in about 9.5 hours, and the windows build was 15.3 hours. So not as different as it looked initially.
Also note that BN does not have native SHA256 implemented yet, and both the Windows and Linux builds of BC reported in the log that it was active for them.