On 2017-11-08 07:18, John Crispin wrote: > j > > > On 07/11/17 19:41, Rosen Penev wrote: >> most users don't have multithreaded workloads though. >> >> On Mon, Nov 6, 2017 at 4:43 PM, Dave Taht <d...@taht.net> wrote: >>> I happen to like deadline schedulers, and at least from a kernel >>> perspective, we have a very large set of multithreaded workloads. >>> >>> So I would not make this change without a very serious set of benchmarks >>> under load showing it makes a difference. >> _______________________________________________ >> Lede-dev mailing list >> Lede-dev@lists.infradead.org >> http://lists.infradead.org/mailman/listinfo/lede-dev > I fully agree with dave on this one. changing the default scheduler is > not a small change. please provide benchmarks done on typical router HW > if you would like to see this getting merged. It's just the I/O scheduler, not the CPU one. It will have zero impact on typical router workloads. The only thing that might get slower is heavy multi-threaded disk I/O, which is probably an extremely rare occurence on LEDE. Also, at least according to that linked phoronix benchmark, even on some of these workloads, no-op can be competitive ;)
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