How do I change from a regular kernel to a PAE kernel ?

[Bill Davidsen]

Linuxguy123 wrote:
> On Wed, 2009-09-30 at 00:43 -0400, Steven W. Orr wrote:
>> On 09/30/09 00:21, quoth Linuxguy123:
>>
>>>>> What difference in speed will I notice in doing this ?
>>> Evolution seems to be faster, but 'free -m' isn't showing that I am
>>> running out of memory or anything.   I generally have ~1600 MB free now.
>>> I gained 1 GB, so before it would have been ~400 MB free. 
>>>
>>> Now I should increase the size of my swap file partition from 2GB to
>>> 4GB...  
>>>
>> I just did this last week. Works fine. But I just have one question:
>>
>> You say your situation is that you're now running at around 1.6G free mem. So
>> why bump the swap area? You can do it, but the whole point was to use more
>> memory. If you didn't run out of swap before then you're even less likely to
>> run out now, unless you now plan on doing things that you didn't do before.
> 
> I'm running 1.6 GB free when not running any of my heavy duty
> applications like ufraw (batch), digikam, eclipse (sometimes 2 or more
> instances), gimp, a couple browsers, evolution and a couple Open Office
> apps. 
> 
> Did I mention that I want to start editing HD video ?
> 
Which program are you using (planning to use)?

> I need 8 GB of RAM ! 
> 
> BTW: The PAE kernel seems to run faster. 
> 
Having extra memory certainly make things run faster, the actual CPU is some 
tiny bit slower when doing context switches and on cache misses. You can measure 
the CPU effect, you can *feel* the boost from the extra memory.

-- 
Bill Davidsen <davidsen at tmr.com>
   "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot