CODEWITHSUNDEEP
linuxubuntustack
Bruce
Bruce

Reputation: 35213

How do I find the maximum stack size?

I am working on Ubuntu 11.04. How do I find out the maximum call stack size of a process and also the size of each frame of the stack?

Upvotes: 42

Views: 86015

Answers (5)

cprcrack
cprcrack

Reputation: 19100

The following call to ulimit returns the maximum stack size in kibibytes (210 = 1024 bytes):

ulimit -s

Upvotes: 26

user9558595
user9558595

Reputation: 41

getrlimit() and setrlimit() are not Linux commands. They are system calls.

So in order to get the result of them, you need something like a bash script or any other executable script that returns the result of the system call.

Upvotes: 4

fruchtose
fruchtose

Reputation: 1320

A quick Google search should reveal some information on this subject.

> ulimit -a         # shows the current stack size

Upvotes: 36

Marcelo Cantos
Marcelo Cantos

Reputation: 185862

You can query the maximum process and stack sizes using getrlimit. Stack frames don't have a fixed size; it depends on how much local data (i.e., local variables) each frame needs.

To do this on the command-line, you can use ulimit.

If you want to read these values for a running process, I don't know of any tool that does this, but it's easy enough to query the /proc filesystem:

cat /proc/<pid>/limits

Upvotes: 32

sashang
sashang

Reputation: 12184

You can use getrlimit to see the stack size and setrlimit to change it.

There's an example in the Increase stack size in Linux with setrlimit post.

Upvotes: 5

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