[Bug 194654] 10.1-RC3 hangs with simultanious writes

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=194654

--- Comment #3 from FreeBSD at ShaneWare.Biz ---
I've now updated to RC4 - while there has been an improvement, the issue is not
totally resolved.

FreeBSD leader.local 10.1-RC4 FreeBSD 10.1-RC4 #19 r273922: Sat Nov  1 16:36:48
ACDT 2014     root at leader.local:/usr/obj/usr/src/sys/GENERIC  amd64

Compression would appear to be a factor. I disabled compression and installed
the new world, in single user mode wired memory increased slower and with swap
enabled rose to 6.8G and stayed there for an hour uptime. At 26 minutes uptime
the wired amount jumped from 3.8G to 6.5G. Without swap enabled processes were
terminated after the drop in free ram.

With compression enabled the wired amount jumped from 421M to 6.7G in 4 seconds
at 3 minutes uptime.

Back in multi-user mode I was able to run two copies of the script for several
hours. I saw the wired amount rise over 7G a few times and while the system
slowed down it remained responsive. Unfortunately the damage was done and the
machine was of limited use. I could start simple things like man and ls but ps
top and su failed to start. This extended to X apps, I could start an xterm
instance but not gnome-terminal, firefox or chrome.. leaving me to hit the
reset button.

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