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

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

On 12/11/09 11:55, Thomas Mueller wrote:
> 
> 
> 
> Am Fri, 11 Dec 2009 11:03:27 +0200 schrieb Tanel Kokk:
> 
>> 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?
>>
> 
> just some thoughts:
> 
> * is qemu/kvm 64bit?
# file /usr/bin/kvm
/usr/bin/kvm: ELF 64-bit LSB executable, x86-64, version 1 (SYSV),
dynamically linked (uses shared libs), for GNU/Linux 2.6.8, stripped

> * check "ulimit -a" on console if a process is limited on memory usage 
> (config file /etc/security/limits.conf)

# ulimit -a
core file size          (blocks, -c) unlimited
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 53248
max locked memory       (kbytes, -l) unlimited
max memory size         (kbytes, -m) unlimited
open files                      (-n) 99999
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) unlimited
real-time priority              (-r) 0
stack size              (kbytes, -s) unlimited
cpu time               (seconds, -t) unlimited
max user processes              (-u) 4096
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited


Tanel