Swap Space Not Being Used?
Charles Curley
charlescurley at charlescurley.com
Thu Sep 21 22:04:12 UTC 2006
On Thu, Sep 21, 2006 at 05:33:40PM -0400, RICHARD wrote:
> I'm using FC4 on a Dell Inspiron 2200 (for over 1 year). OOo has started
> crashing when working with inserting large picture files (although I've
> worked with them in the past without problem). I noticed in xosview that
> the physical memory (0.5GB) quickly goes up near the maximum and then OOo
> exits. I also noticed that the swap space (which I believe is about 1GB)
> always shows exactly zero. (On a 2gb memory dual opteron system, xosview
> reports 845mb.) Shouldn't xosview show some swap space being used?
I don't know about xosview, as I don't use it. But free might or might
not show any swap in use during normal usage. e.g:
$ free -m
total used free shared buffers cached
Mem: 1519 1484 35 0 193 852
-/+ buffers/cache: 437 1081
Swap: 4094 1 4093
shows four GB of swap mounted and one megabyte of swap in use.
# free -m
total used free shared buffers cached
Mem: 234 230 4 0 26 60
-/+ buffers/cache: 143 91
Swap: 0 0 0
shows swap off.
>
> Here is the partition table reported by fdisk:
>
> Device Boot Start End Blocks Id System
> /dev/hda6 2570 2697 1028128+ 82 Linux swap /
> Solaris
> Any ideas on how I can check on whether swap is being used and/or turn
> sway back on if it is actually not being used?
First, to ensure that swap is turned on at boot, be sure it is in
/etc/fstab. e.g I have:
LABEL=SWAP-hda6 swap swap defaults 0 0
or maybe, if you aren't a fan of disk labels:
/dev/hda6 swap swap defaults 0 0
Then simply run:
swapon /dev/hda6
to get it running. No response, in Unix tradition, indicates
success. If swap is already enabled on that partition, you'll see:
# swapon /dev/hda6
swapon: /dev/hda3: Device or resource busy
--
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