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Full Discussion: CPU Usage
Operating Systems HP-UX CPU Usage Post 302662017 by vbe on Tuesday 26th of June 2012 04:32:57 AM
Old 06-26-2012
About your swap configuration:
Code:
TYPE      AVAIL    USED    FREE  USED   LIMIT RESERVE  PRI  NAME
dev       16384       0   16384    0%       0       -    1  /dev/vg00/lvol2
dev       30016       0   30016    0%       0       -    1  /dev/vg00/secswap

Since we dont know what external storage you use (if its the case...), I will figure out that your swap devices were not dreated at the same time and are here to correct memory access trouble of the beginning.
What will happen if you were to use the swap now? It will take the biggest first...
The impact? Your biggest is huge with only one access (unless its a multidisk striped device...) and two devices on the same root disks is not a good idea...
About CPU, Methyl and I have same way of seeing things: Not knowing what is running at what moment and for how long, you CANNOT diagnose what you have as an issue, Im tempted to say your thresholds are badly set...
I never had any serious trouble with the HP servers I managed at the time for I knew what was running on them and could ( and NOT a software ) see just by leaving glance running and looking time to time if things where normal or not... some strong calculations of stats can take 100%CPU during days (Yes! days...) a RDBMS transaction lasting hours is very suspicious but only the DBA can tell if normal or not
One classical issue figure is the box that "freezes" periodically with 100% CPU and I/O...
 

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rest(3alleg4)                                                     Allegro manual                                                     rest(3alleg4)

NAME
rest - Waits a specified number of milliseconds or yields CPU. Allegro game programming library. SYNOPSIS
#include <allegro.h> void rest(unsigned int time); DESCRIPTION
This function waits for the specified number of milliseconds. Passing 0 as parameter will not wait, but just yield. This can be useful in order to "play nice" with other processes. Other values will cause CPU time to be dropped on most platforms. This will look better to users, and also does things like saving battery power and making fans less noisy. Note that calling this inside your active game loop is a bad idea, as you never know when the OS will give you the CPU back, so you could end up missing the vertical retrace and skipping frames. On the other hand, on multitasking operating systems it is good form to give up the CPU for a while if you will not be using it. SEE ALSO
install_timer(3alleg4), rest_callback(3alleg4), vsync(3alleg4), d_yield_proc(3alleg4) Allegro version 4.4.2 rest(3alleg4)
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