On Sat, 8 Aug 2015 19:10:17 -0400 Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx> wrote: > So we took 20 IRQs in 5s, or 4/s ; not quite the 1/s minimum, but definitely not > the HZ/s we'd get w/o NOHZ_FULL. Re-running it got consistently 18-20 IRQ / 5s. OK, so NO_HZ_FULL still isn't great on -rt, but this shows that it keeps disturbances much lower than without it. Thanks for the report! -- Steve > > I specifically did NOT unplug and replug cores to "clean" them of tasks; the > hotplug code just seems to unstable for that from what I've seen in the past, > and by the looks of the irq counts above, there was no need to either. > > The rootfs was basically a ubu 14.10 server install (no X11/gfx) -- not that > it should matter - so long as other tasks weren't running on the nohz cores. > > Paul. > -- > > > > > Enjoy, > > > > -- Steve > > -- 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
