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swap space on linux
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Author Subject: swap space on linux      Add to my favorites
Sanjit Chand Expert in this area
Nov 5, 2009 17:16:44 GMT   
I have this device with this much space available and would like to create a 100g swap space.

Please tell me how I would do that?

/dev/sdb1 135G 92M 128G 1% /scratch

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Matti Kurkela Expert in this area This member has accumulated 7500 or more points
Nov 5, 2009 17:42:46 GMT    Unassigned
Type "man mkswap". Read.

Type "man swapon". Read.

Then you'll know.

MK
Sanjit Chand Expert in this area
Nov 5, 2009 18:11:20 GMT    N/A: Question Author
In short,

its dd
mkswap
swapon.
Steven E. Protter Expert in this area This member has accumulated 80000 or more points
Nov 5, 2009 20:41:30 GMT    Unassigned
Shalom,

Before you go out and create this massive a swap area.

free

Post the output.

If you make a 100 GB swap area, and don't have enough memory, having this much swap space is not going to hep anything.

What is system memory? You should if you have 50 GB of ram not need 100 GB of swap space.

The old rules on this sizing do not apply to new systems with lots and lots and LOTS of RAM.

SEP
Nuwan Alwis Expert in this area This member has accumulated 250 or more points
Nov 6, 2009 03:21:30 GMT    Unassigned
Hi Sanjit,
yes, you can extend your swap space online.
And i also agree with what SEP has said.
think before if you really need this much of swap space. Its not always prove that lager the swap you have it will add performance to your system(some times it will degrade your systems performance)

What i would do is ondemand add swap to the system by using dd.

Good Luck...!
NJ
Viktor Balogh This member has accumulated 500 or more points
Nov 6, 2009 13:38:10 GMT    Unassigned
>yes, you can extend your swap space online.

no, it's not about extending, it's about adding a new swap device
 
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