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Old 07-14-2004, 04:40 PM   #1
adking
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Registered: Jul 2004
Location: Toronto
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Total newbie -- enabling swap after install (FC2)


Hi guys,

I recently installed FC2, dual booted with XP, and for some reason Disk Druid wouldn't let me make a swap partition on install, so I made one later on with PartitionMagic. I have 512 memory, 1 gig swap partition, but I have no idea how to make linux use the swap.

I need swap to work both for root and other users. My RAM is full but no swap is being used. I've been using Linux for a while, but only at school so I have absolutely no depth of knowledge.

Thanks!
 
Old 07-14-2004, 04:54 PM   #2
Andrew Benton
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Registered: Aug 2003
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You need to add a line to /etc/fstab like

/dev/hda5 swap swap defaults 0 0

change the hda5 to reflect where your swap partition is then as root do
mount -a
 
Old 07-17-2004, 03:17 PM   #3
adking
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Registered: Jul 2004
Location: Toronto
Distribution: FC2
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Quote:
Originally posted by Andrew Benton
You need to add a line to /etc/fstab like

/dev/hda5 swap swap defaults 0 0

change the hda5 to reflect where your swap partition is then as root do
mount -a
ok... i did that, then i logged in as my general user, then ran a bunch of programs to fill my memory, but the swap still isn't being used.

so then i tried su'ing and i ran
mount -a
and
swapon -a

and the swap still isn't being used. my swap is a 1 gig partition, /dev/hda6, not that it matters, but it's still not being used!
 
Old 07-17-2004, 06:01 PM   #4
Andrew Benton
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Half a Gb is plenty of memory. Why do you want it to use the swap partition? Won't it slow down your system? Google on swappiness and do some reading.
 
Old 07-18-2004, 12:28 PM   #5
adking
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Distribution: FC2
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I tend to do a lot of scientific programming and right now I'm working on an application that takes upwards of 1.3G of memory -- obviously I have to stick to smaller instances on my home machine

I guess it's not really critical, but I'd like to know how to do it anyway.
 
Old 07-23-2004, 02:35 PM   #6
ppuru
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hope you ran

swapon /dev/hxxn where hxx is the partition you have created for swap (Partition type 82)
 
Old 07-23-2004, 06:43 PM   #7
mugstar
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Wink

Erm ... you're not happy that the kernels memory management is too good?
 
  


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