On Tue, 2024-04-09 at 18:56 -0400, Benjamin Marzinski wrote: > With this change, if the SCHED_RT_PRIO compiler flag has been > removed. > Instead multipathd will call getrlimit(RLIMIT_RTPRIO, ...) and look > at > the hard limit. It it's 0, multipath will do nothing. Otherwise it > will > change its scheduling policy to SCHED_RR and its priority to the hard > limit. > > This allows users to change the priority of that multipathd runs with > by > adding > > LimitRTPRIO=<prio> > > to the [Service] section of the multipathd.service unit file. Setting > LimitRTPRIO=0 will make multipathd run as a normal process, while > setting LimitRTPRIO=infinity will make it use the maximum SCHED_RR > prio, > which is 99. > > To keep the existing behavior, multipathd.service now sets > LimitRTPRIO=infinity > > Signed-off-by: Benjamin Marzinski <bmarzins@xxxxxxxxxx> Reviewed-by: Martin Wilck <mwilck@xxxxxxxx> I will wait a while for feedback on https://github.com/opensvc/multipath-tools/issues/82 before pushing it to the queue branch. When it's pushed, I'll squash it with 1c4301a ("multipathd: make multipathd scheduling configurable"), if you don't mind. Thanks, Martin
