When poudriere jails become stuck in a loop

[Mark Martinec]

2014-09-23 15:43, Beeblebrox wrote:
> I have 3 zpools.
> When I reported this, I had 4G RAM, now I have 8G. This error no longer
> happens, so ı must assume that it's a RAM issue (< 4G with zpool).

2014-07-18 16:34, Beeblebrox wrote:
> It just occurred to me that I should mention I use core unlocking. My
> CPU: AMD-AthlonII-X3-460, with 4th core unlocked making it an X4-460.
> 
> On the other hand, I have seen two poudriere jails stuck in loops at
> the same time (out of running 4), which may not mean much since
> instructions from jail are picked up by any available core.
> 
> Something else I have noticed lately is that my 4G swap keeps running
> out of space: "swap_pager_getswapspace(4): failed". This is probably a
> result of the stuck jail and not a cause IMHO.

... or ZFS ARC & memory backpressure problem, still unfixed
in 10-STABLE and CURRENT:

   Bug 187594 - [zfs] [patch] ZFS ARC behavior problem and fix
   https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=187594


Mark