>On Thu, 26 Jul 2018 15:03:23 +0800 "zhaowuyun@xxxxxxxxxxxx" <zhaowuyun@xxxxxxxxxxxx> wrote: > >> >On Thu 26-07-18 10:21:40, zhaowuyun@xxxxxxxxxxxx wrote: >> >[...] >> >> Our project really needs a fix to this issue >> > >> >Could you be more specific why? My understanding is that RT tasks >> >usually have all the memory mlocked otherwise all the real time >> >expectations are gone already. >> >-- >> >Michal Hocko >> >SUSE Labs >> >> >> The RT thread is created by a process with normal priority, and the process was sleep, >> then some task needs the RT thread to do something, so the process create this thread, and set it to RT policy. >> I think that is the reason why RT task would read the swap. > >A simpler bandaid might be to replace the cond_resched() with msleep(1). Thanks for the suggestion, we will try that. -------------- zhaowuyun@xxxxxxxxxxxx
