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тАО07-05-2001 11:26 AM
тАО07-05-2001 11:26 AM
swap questions
Thanks in advance
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тАО07-05-2001 11:31 AM
тАО07-05-2001 11:31 AM
Re: swap questions
Anyhting between 1-2 times the swap is a good place to start with .
Manoj Srivastava
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тАО07-05-2001 11:37 AM
тАО07-05-2001 11:37 AM
Re: swap questions
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тАО07-05-2001 11:43 AM
тАО07-05-2001 11:43 AM
Re: swap questions
I tend to be a radical in this but I very seldom adopt the old 2x-3x rule. In fact, I typically enable only 256-512MB of primary
swap with pseudo-swap enabled.
The whole reason I bought the memory was so that I wouldn't swap in the first place! Using 2x-3x (which is 4x-6x with mirrors) for disk that I will never use is dumb. If you want to feel safe in machines with large amounts of RAM then (here I go being radical again) enable file system swap at very low priority. It will almost certainly never be used but if it is you then have the swap and it is allocated dynamically.
I do suggest in these cases that you set up a separate dump area at 1x RAM plus a bit more
and don't mirror it.
The only time I use the old 2x-3x rule is in systems with very little memory.
My 2 cents, Clay
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тАО07-05-2001 11:54 AM
тАО07-05-2001 11:54 AM
Re: swap questions
When you suggest using fs swap, is that for the primary swap? And if this is so, then why do you need to set the priority low?
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тАО07-05-2001 11:59 AM
тАО07-05-2001 11:59 AM
Re: swap questions
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тАО07-05-2001 12:19 PM
тАО07-05-2001 12:19 PM
Re: swap questions
No you have no control over then percantage of RAM for swap. Pseudo-swap is 0 or 1 (off or on). You must have some primary swap space, 256 MB is about minimum and it has priority 1. fs swap can then be assigned priority 3 or so.
That way, primary swap is completely used before filesystem swap is touched.
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тАО07-05-2001 11:50 PM
тАО07-05-2001 11:50 PM
Re: swap questions
If you have less memory, then allocating the dedicated swap is good.
using File system swap is good when you are not sure how much swap is required for the system and you don't want to dedicate the disk space only for swap.
hope this helps,
manju