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Operating Systems AIX AIX 6.1 Power6 - Sys CPU utilization twice that of User Post 302389909 by zaxxon on Tuesday 26th of January 2010 11:07:43 AM
Old 01-26-2010
That sy is higher than us just means the kernel has much more to do. That should be because the software is written like this, I would guess. To check in detail what is going on CPU-wise, have look at tprof maybe:

AIX 5.2 performance tools update, Part 3

I have no experience with tprof myself but maybe you get something of worth out of it analysing it.

You could also try again with enabling/disabling SMT (smtctl [on|off]) check for different behaviour, depending if the application has lot's of processes or is written mulithreaded (check with svmon -P| grep -p Pid). If SMT is working fine ie. dispatching works smooth, can be checked with "mpstat -s 1" (see System p education).

Checking how the work is distributed on the different (logical/virtual) CPUs can be done with sar -P ALL 1 9999 for example.

This one might be interessting for you too:
http://www.ibm.com/developerworks/wi...len+CPU+cycles
 

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Ns_Url(3aolserver)					   AOLserver Library Procedures 					Ns_Url(3aolserver)

__________________________________________________________________________________________________________________________________________________

NAME
Ns_AbsoluteUrl, Ns_ParseUrl, Ns_RelativeUrl, Ns_SkipUrl - URL manipulation routines SYNOPSIS
#include "ns.h" int Ns_AbsoluteUrl(Ns_DString *pds, char *url, char *baseurl) int Ns_ParseUrl(char *url, char **pprotocol, char **phost, char **pport, char **ppath, char **ptail) char * Ns_RelativeUrl(char *url, char *location) char * Ns_SkipUrl(Ns_Request *request, int n) _________________________________________________________________ DESCRIPTION
Ns_AbsoluteUrl(pds, url, baseurl) Construct an URL based on baseurl but with as many parts of the incomplete url as possible. Return NS_OK or NS_ERROR. Ns_ParseUrl(url, pprotocol, phost, pport, ppath, ptail) Parse a URL into its component parts. Pointers to the protocol, host, port, path, and "tail" (last path element) will be set by ref- erence in the passed-in pointers. The passed-in url will be modified. Ns_RelativeUrl(url, location) If the url passed in is for this server, then the initial part of the URL is stripped off. e.g., on a server whose location is http://www.foo.com, Ns_RelativeUrl of "http://www.foo.com/hello" will return "/hello". Returns a pointer to the beginning of the relative url in the passed-in url, or NULL if error. Will set errno on error. Ns_SkipUrl(request, n) Return a pointer n elements into the request's url. SEE ALSO
nsd(1), info(n) KEYWORDS
AOLserver 4.0 Ns_Url(3aolserver)
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