[CDBUG-talk] FreeBSD & 8GB RAM
jaime at snowmoon.com
Sun Dec 20 14:53:41 EST 2009
Does this make sense to any of you?
cerberus# dmesg | grep memory
real memory = 9126805504 (8704 MB)
avail memory = 8403456000 (8014 MB)
cerberus# sysctl -a | grep w | grep mem:
cerberus# top |head -n 5
last pid: 5552; load averages: 0.00, 0.00, 0.00 up 0+05:12:21 14:47:12
114 processes: 1 running, 112 sleeping, 1 stopped
Mem: 161M Active, 920M Inact, 114M Wired, 76K Cache, 112M Buf, 6823M Free
Swap: 4096M Total, 4096M Free
Note that in sysctl, the hw.realmem number is roughly 0.5GB, not 5GB.
So in sysctl, I see ~4GB physical and user memory, but only 0.5GB of
real memory. (I don't even know what the distinction is, BTW.)
Yet in top and at boot time, I see about 8GB of RAM.
I have PAE compiled in the kernel. In fact, just to double check:
cerberus# uname -a
FreeBSD cerberus.cairodurham.org 7.0-RELEASE FreeBSD 7.0-RELEASE #1:
Wed Sep 24 17:13:12 EDT 2008
jkikpole at test.cairodurham.org:/usr/obj/usr/src/sys/CERBERUS i386
cerberus# cat /usr/src/sys/i386/conf/CERBERUS
# Add the default setup for a kernel with >4GB of RAM supported.
# Change the name of the kernel.
# Add support for the ipfw command, including forwarding.
I'm at a loss. This wouldn't bother me so much if the network monitor
that I started setting up on Thursday wasn't throwing alarms for using
over 101% of physical memory on this box. :) Take a look:
Memory Used Total Percentage
Physical 4294964560M 4084M 4294967230%
Swap 0M 4096M 0%
Weird, huh? Any thoughts or suggestions? The OS is over a year old.
I should have a good chance to do some upgrades in a week or so, if I
don't come up with any better ideas.
Thanks in advance,
P.S. - Anyone know a reason I shouldn't cvsup the current 7-STABLE
tree and start building binaries today?
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