Swap partation for FC6

[edwardspl at ita.org.mo]

oldman wrote:

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>Gilboa Davara wrote:
>  
>
>>On Mon, 2007-01-01 at 20:49 +0800, edwardspl at ita.org.mo wrote:
>>    
>>
>>>Dear All,
>>>
>>>I'm thinking the size partition of swap for FC6 :
>>>
>>>1, WebMail System ( http://horde.org/imp, use MySQL DB Server )
>>>2, Web, DNS, FTP, Mail /etc.
>>>
>>>Please give comment, thanks !
>>>
>>>PS : Actual Ram is 1GB.
>>>
>>>      
>>>
>>In general, people tend to allocate twice the memory size for swap, or
>>in your case, 2GB.
>>-However-, swap should not be treated as "memory" - it should be treated
>>as "Backup memory repository that should save my server if there's a
>>-short- server load surge".
>>If you're  frequently hitting the swap and/or the swap usage >= memory
>>size, you should seriously consider adding more memory.
>>
>>- GIlboa
>>
>>
>>    
>>
>I have always had a problem with this "rule of thumb"  The proper amount
>of swap depends entirely on how much memory you use, rather than how
>much you have.
>
>My system had 256M of memory and I found I often maxed out on swap just
>running a browser & mail client and a couple of other progs (I had 512M
>swap, under the 2X ram theory)
>
>I recently added 1GB of ram, and now I rarely use any swap! I have seen
>in the monitor program  a usage figure of .8%, but since my system is
>much more responsive, I don't run that program nearly as often.
>
>Disk memory, being cheap, you should use what you need,  Unless you are
>editing Video or (possibly) HUGE Jpegs, Tiffs etc 512M should be more
>than plenty. You can always add more, or use a swap file that can grow
>with need.
>
>HTH
>Scott
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Due to using php and DB Server within 24 x 7 days...
So, I think the swap size 2GB may be ok !

Edward.
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