Mikael Pettersson writes: > Geert Uytterhoeven writes: > > Hi Mikael, > > > > On Fri, Jun 6, 2014 at 1:38 PM, Mikael Pettersson <[email protected]> > wrote: > > > Since updating my ARAnym VMs from 3.12.16 to 3.13.11 I see kswapd0 > > > and ksoftirqd/0 consume inordinate amounts of CPU. kswapd0 often > > > rises to about 30-50% CPU even though RAM shouldn't be anywhere near > > > depleted (768GB, a gcc bootstrap running in a screen session). > > > kswapd0 tends to stay this way until I drop caches, but doing that > > > doesn't always fix it. I also sometimes see ksoftirqd/0 consume > > > 5-30% CPU. > > > > > > Reverting to 3.12.16 completely eliminates these problems. > > > > Any chance to bisect it? > > > > > I haven't tested 3.14 or 3.15-rc yet. > > > > Would be good to know, though, as it may have been fixed. > > However, as v3.13.11 is the most recent stable version of v3.13, this may > be > > an elsewhere unknown and thus unfixed issue. > > I've just started a gcc-4.8 bootstrap on 3.14.5, and then I'll try 3.15 > if it isn't fixed in 3.14.
3.14.5 is also affected by the bug. Dropping caches fixed kswapd0, but instead ksoftirqd/0 jumped to 20-40%, and it refuses to calm down. -- To unsubscribe from this list: send the line "unsubscribe linux-m68k" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
