performance questions

[LC Bruzenak]

I was looking at some strace results from a process using the
audit_log_user_message call and I think I see how I can eliminate some
ioctls and /proc/self lookups by setting the hostname/tty parameters to
non-NULL pointers pointing to NULL values.

But the exename is another story. It does a lookup each time. We have
persistent processes each of which submit 100Ks (on the way to 1Ms) of
audit_log_user_message events daily, so it would make a difference.

I was thinking about a patch to store off the exename statically if one
isn't already in the pipeline. Let me know; I'll submit something if
not.

The other question is on the auditd side. IIUC on each event the
write_to_log function is checking the logfile size. Seems to me that we
could limit the fstat checks to say one every ten events or so. Any
problems there?

Thx,
LCB 

-- 
LC (Lenny) Bruzenak
lenny at magitekltd.com