Comment Comment by dijit I'm not an expert, I'm a lowly systems admin-But I imagine the difference is that size of systemd itself and how mysql does fork().SystemD is 1.5MB itself on my systems where I have it, but upstart (for example) is 148KB on centos 6.Since an AMD Epyc has roughly 64Mb of L3 Cache, a larger binary would not have to be evicted from L3 cache as often.One of Intels generally powerful all-rounder CPUs (2687Wv4) only has 30Mb of "Smart-cache" (which is fancy speak for; not that much)A complete guess on my part though.. parent dijit 8 years ago
But I imagine the difference is that size of systemd itself and how mysql does fork().
SystemD is 1.5MB itself on my systems where I have it, but upstart (for example) is 148KB on centos 6.
Since an AMD Epyc has roughly 64Mb of L3 Cache, a larger binary would not have to be evicted from L3 cache as often.
One of Intels generally powerful all-rounder CPUs (2687Wv4) only has 30Mb of "Smart-cache" (which is fancy speak for; not that much)
A complete guess on my part though..