We have a computing cluster running Sun Grid Engine, which considers this value to check if a process exceeds the memory limit or not. So somehow I'm bound to consider it.
I installed a machine from scratch with CentOS 6.2 x64, nothing else, I open a terminal, I run this simple bash script and VIRT goes beyond 100MB for it. I understand it may not be very precise, however I still don't understant the difference compared to other x64 ditributions, under CentOS the value is 7 times higher!
2012/9/27 Gordon Messmer yinyang@eburg.com:
On 09/26/2012 09:14 AM, Jérémie Dubois-Lacoste wrote:
- Run a python script and check the memory that
it requires (field "VIRT" of the "top" command).
Don't use VIRT as a reference for memory used. RES is a better indication, but even that won't tell you anything useful about shared memory, and will lead you to believe that a process is using more memory than it is.
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