Luciano Miguel Ferreira Rocha wrote:
>How much memory does it take to clone() a bash?
>
$ ps -o size,vsz,rss,args
SZ VSZ RSS COMMAND
1428 6244 2212 -bash
About 1428MB, I guess. Not that it would be consumed, but that the
kernel must guarantee to be available.
Regards,
Luciano Rocha
Erm.. Perhaps I'm a bit behind on things, but I though the SZ field
shows the number of pages that a process is using, not the number of
Megs guaranteed. That'd make your estimate just a few orders of
magnitude high.
The VSZ will give your answer in bytes rather than pages. That's the
total process size in virtual memory, displayed in KB. The RSS is the
amount of that's actually IN memory. The discrepency between these
numbers would then indicate, at least in a crude way, the difference
between what the app thinks it's using versus what the OS actually has
tied up in the process.
So, you're looking at something more along the lines of 6MB, rather than
1.4GB; with 2M actually used.
Someone care to check my math?