On 01/04/2018 12:29 PM, Hindman, Gavin wrote: > Since we seem to be in knowledge-sharing mode, is there an existing list of kernel config parameters, outside of those required to enable preempt_rt, known to impact or improve general system latency? I didn't find anything prowling the various wikis. > You can pay attention on CONFIG_RCU_BOOST CONFIG_RCU_NOCB_xxx Also, as mentioned, disabling PM, especially CPU PM is helpful. CONFIG_CPU_IDLE=n CONFIG_CPU_FREQ=n Note. you can also use CONFIG_GENERIC_IDLE_POLL_SETUP and "nohlt" command line parameter, but you might hit overheating ;) !!! And, of course, disable most of debug options unless you really need them. -- regards, -grygorii -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
