At a previous job circa 2008-12, we were a sun shop and moved from spark to x86 Solaris. It screamed at sustained, high-concurrency loads and our workloads benefited from the trinity of Solaris' threading, ZFS tiered storage, and zones/containers. By the time the Intel Nehalem chips became available to use, our DB loads screamed, too. There were edge cases where the sparc chips were better, but not at the price points offered. Linux was competitive at a performance level (though we always saw some issues if the machines were pegged for sustained amounts of time), but production containerization in those days was VMWare, which was enough of a performance hit to not be worth it.