# memory stack

**URL:** <https://community.unix.com/t/memory-stack/171272>\
**Category:** UNIX for Dummies Questions & Answers\
**Created:** [May 16, 2007, 4:43am UTC](https://community.unix.com/t/memory-stack/171272 "2007-05-16T04:43:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![aladdin](https://community.unix.com/letter_avatar/aladdin/32/6_449c533f586939b6e5f246632a46421f.png) [@aladdin](https://community.unix.com/u/aladdin)\
**Post date:** [May 16, 2007, 4:43am UTC](https://community.unix.com/t/memory-stack/171272/1 "2007-05-16T04:43:58Z")

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Hello everbody:  
when issuing the ulimit -a, on my tru64 machone, I get the following:

root@billing4# ulimit -a  
time(seconds) unlimited  
file(blocks) unlimited  
data(kbytes) 10485760  
stack(kbytes) 32768  
memory(kbytes) 10190528  
coredump(blocks) 0  
nofiles(descriptors) 4096  
vmemory(kbytes) 6291456

when another user issued it he got different data parameters, when I as a root switched to that user using "su - user" i kept getting the same parameters as root.

my question now, can I increase the size of the stack, is it per user, or per session, and whast the potential side effects for such step??

Thanks in advance

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**Author:** ![sysgate](https://community.unix.com/user_avatar/community.unix.com/sysgate/32/3504_2.png) [@sysgate](https://community.unix.com/u/sysgate)\
**Post date:** [May 16, 2007, 9:17am UTC](https://community.unix.com/t/memory-stack/171272/2 "2007-05-16T09:17:08Z")

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Processes running with owner "root" are not affected by the limit, still, you can change the values with "ulimit -s newvalue". Non root user should not have bigger limit then RAM.