When I was at Yandex, we were a FreeBSD-CURRENT shop (FreeBSD 9 at that time). So, that said, FreeBSD will had exactly the same[0] issues on the low/mid levels,

When I was at Yandex, we were a FreeBSD-CURRENT shop (FreeBSD 9 at that time). So, that said, FreeBSD will had exactly the same[0] issues on the low/mid levels, just not all of them had a good solution[1][2]. [0] https://wiki.freebsd.org/201305DevSummit/NetworkReceivePerformance/ComparingMutiqueueSupportLinuxvsFreeBSD https://wiki.freebsd.org/201305DevSummit/NetworkReceivePerfo... [1] https://wiki.freebsd.org/NetworkPerformanceTuning https://wiki.freebsd.org/NetworkPerformanceTuning [2] https://wiki.freebsd.org/TransportProtocols https://wiki.freebsd.org/TransportProtocols