On Sun, Apr 24, 2011 at 22:42, KOSAKI Motohiro wrote: >> On Sun, 24 April 2011 Bruno PrÃmont wrote: >> > On an older system I've been running Gentoo's revdep-rebuild to check >> > for system linking/*.la consistency and after doing most of the work the >> > system starved more or less, just complaining about stuck tasks now and >> > then. >> > Memory usage graph as seen from userspace showed sudden quick increase of >> > memory usage though only a very few MB were swapped out (c.f. attached RRD >> > graph). >> >> Seems I've hit it once again (though detected before system was fully >> stalled by trying to reclaim memory without success). >> >> This time it was during simple compiling... >> Gathered info below: >> >> /proc/meminfo: >> MemTotal: Â Â Â Â 480660 kB >> MemFree: Â Â Â Â Â 64948 kB >> Buffers: Â Â Â Â Â 10304 kB >> Cached: Â Â Â Â Â Â 6924 kB >> SwapCached: Â Â Â Â 4220 kB >> Active: Â Â Â Â Â Â11100 kB >> Inactive: Â Â Â Â Â15732 kB >> Active(anon): Â Â Â 4732 kB >> Inactive(anon): Â Â 4876 kB >> Active(file): Â Â Â 6368 kB >> Inactive(file): Â Â10856 kB >> Unevictable: Â Â Â Â Â32 kB >> Mlocked: Â Â Â Â Â Â Â32 kB >> SwapTotal: Â Â Â Â524284 kB >> SwapFree: Â Â Â Â 456432 kB >> Dirty: Â Â Â Â Â Â Â Â80 kB >> Writeback: Â Â Â Â Â Â 0 kB >> AnonPages: Â Â Â Â Â6268 kB >> Mapped: Â Â Â Â Â Â 2604 kB >> Shmem: Â Â Â Â Â Â Â Â 4 kB >> Slab: Â Â Â Â Â Â 250632 kB >> SReclaimable: Â Â Â51144 kB >> SUnreclaim: Â Â Â 199488 kB Â <--- look big as well... >> KernelStack: Â Â Â131032 kB Â <--- what??? > > KernelStack is used 8K bytes per thread. then, your system should have > 16000 threads. but your ps only showed about 80 processes. > Hmm... stack leak? i might have a similar report for 2.6.39-rc4 (seems to be working fine in 2.6.38.4), but for embedded Blackfin systems running gdbserver processes over and over (so lots of short lived forks) i wonder if you have a lot of zombies or otherwise unclaimed resources ? does `ps aux` show anything unusual ? -mike -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
