Re: strace questions

[Seth Arnold <sarnold@wirex.com>]

On Mon, Feb 10, 2003 at 03:34:16PM -0600, Noah Yan wrote:
> strace can report system call and signal of a process. Is it used only for
> testing some program?

Primarily.

> Can I use it on a already running process?

man strace; look for -p.

> If yes, does it impact the execution time or performance of the
> process?

I think it causes syscall times to roughly double. It may help to
redirect output to a file, since waiting for terminals to disply text
can take a while...

-- 
People who separate manpages from the programs
they document would steal sheep.  -- apologies to Goudy

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