On Sun, Nov 9, 2014 at 3:51 AM, Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> wrote: > On Sun, Nov 09, 2014 at 03:24:34AM +0400, Alexander Monakov wrote: >> On Sun, Nov 9, 2014 at 1:13 AM, Paul E. McKenney >> <paulmck@xxxxxxxxxxxxxxxxxx> wrote: >> > >> > Did anyone try replacing the synchronize_rcu() with >> > synchronize_rcu_expedited()? That should provide substantial speedups >> > over synchronize_rcu(). >> >> I've just briefly tested it on my laptop, and it also helps to avoid the issue. > > OK, good. > > In the past, synchronize_rcu_expedited() has been a bit unfriendly to > battery-powered platforms and to real-time and HPC workloads, but > recent changes for the most part fix this. Good. In this way patch is much smaller. This code shouldn't be used too frequently, so overhead isn't so much important here. > > Thanx, Paul > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
