where's my memory?

[Neal Becker]

Александр Горлов wrote:

> seems to me you used 32-bits OS. THis kind of OS cannot see more then 3GB.
> Please try to send request to google like 3G RAM limit.
> You will receive detail explanation
> 
> 2009/7/14 Neal Becker <ndbecker2 at gmail.com>
> 
>> I have a argument with another user about memory.  He claims that on
>> running
>> linux on his 4G Dell machine, top only reports 3.something memory, he
>> says
>> the missing space is for pci bus.  I think this is only because he's
>> running
>> 32 bit and that 64 bit would give all the memory.
>>
>> I tried on my 64bit 8G machine, and it reports
>> 8114688k total
>> 8114688 * 1024 = 8309440512 (assuming top 'k' is 1024)
>> 2**33 = 8589934592
>> The diff is:
>>  280494080
>>
>> I know some will be kernel space, but that doesn't account for 280M.
>>
>>
>> --
But those numbers are from F11 on x86_64, not 32 bit.