On Wed, 2022-11-16 at 14:33 -0800, Luis Chamberlain wrote: > More in lines with what I was hoping for. Can something just do > the parallelization for you in one shot? Can bench alone do it for > you? > Is there no interest to have soemthing which generically showcases > multithreading / hammering a system with tons of eBPF JITs? It may > prove useful. > > And also, it begs the question, what if you had another iTLB generic > benchmark or genearl memory pressure workload running *as* you run > the > above? I as, as it was my understanding that one of the issues was > the > long term slowdown caused by the directmap fragmentation without > bpf_prog_pack, and so such an application should crawl to its knees > over time, and there should be numbers you could show to prove that > too, before and after. We did have some benchmarks that showed if your direct map was totally fragmented (started from boot at 4k page size) what the regression was: https://lore.kernel.org/linux-mm/213b4567-46ce-f116-9cdf-bbd0c884eb3c@xxxxxxxxxxxxxxx/
