[PLUG-TALK] Laptop Memory Question

Russell Johnson russ at dimstar.net
Thu Mar 10 16:31:26 PST 2011

On Mar 10, 2011, at 4:22 PM, Rich Shepard wrote:

> On Thu, 10 Mar 2011, Paul Heinlein wrote:
>> There are hard per-process memory limits for 32-bit Linux. It used to be
>> that 32-bit systems were subject to a system limit of 4 GB of RAM, but
>> CPUs with the 'pae' feature can run PAE kernels (which use mapping
>> techniques reminiscent of "high" memory in DOS days) to extend that limit
>> to 64 GB.
>   Thanks for clarifying, Paul. I thought the 'pae' flag meant it could
> access > 3G (such as 4G).
>   When I check /proc/meminfo in the desktop (which has a nominal 4G RAM
> installed) I see the listing as
> MemTotal:        3372624 kB
> and assume that represents a nominal 4G using 1024kB/mB. Is my assumption
> incorrect?

4GB would be 4096MB or 4,294,967,296 Bytes. The actual number should always be higher, as long as we're talking memory, not hard drives.

Russell Johnson
russ at dimstar.net

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