Re: In kvm, a single process cannot allocate more than 3.6GB ram. Why?

[Tanel Kokk <tanel.kokk@gmail.com>]

On 12/12/09 10:55, Avi Kivity wrote:
> On 12/11/2009 11:03 AM, Tanel Kokk wrote:
>> Does anybody have a glue why process are not able to allocate more than
>> 3.6GB memory ?
>>
>> What should i do to allow process allocate more than 3.6GB memory? Is it
>> possible at all?
>>    
> 
> A guest or host process?  And what happens when you try?

guest process

We discovered that if postgres process (on guest) used to use only 3.6GB
memory regardless of guest had 8GB memory in common.

Then I made simple python script, which just eat memory:
------------------------------------
#!/usr/bin/python
import time, random

i = 0
while (i < 100000000):
    a[i] = random.random()
    i = i + 1

time.sleep(600)
------------------------------------
And I get python MemoryError, when script has devoured about 3.6GB ram


Tanel