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Full Discussion: LPAR CPU capacity planning
Operating Systems AIX LPAR CPU capacity planning Post 302804371 by MichaelFelt on Wednesday 8th of May 2013 12:54:35 PM
Old 05-08-2013
lbusy gives you the relative number of "logical" cpus busy. Since you are smt4 your have 96/4 virtual processors - 24 virtual (i.e. maximum physical processors at any moment).

Since your entitlement is 16 - the PHYP has reserved (declared as Home) two sockets of 8 cores each. The 8 extra virtual processors will run, ideally, on these home processors.

16 entitlement == 160 msec processing power every 10 msec guaranteed.

phsyc * 10 = # msec actually used (not processors!)
lbusy * 96 = average number of threads busy; if this number is nearly equal to physc, then you are running, mainly, single-threaded and you could easily reduce the number of VP assigned (to 'force' more utilization from a single processor (i.e., lbusy goes up faster than physc).

Hope this helps (I have to run to dinner Smilie )
 

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cpufreq-set(1)															    cpufreq-set(1)

NAME
cpufreq-set - A small tool which allows to modify cpufreq settings. SYNTAX
cpufreq-set [options] DESCRIPTION
cpufreq-set allows you to modify cpufreq settings without having to type e.g. "/sys/devices/system/cpu/cpu0/cpufreq/scaling_set_speed" all the time. OPTIONS
-c --cpu <CPU> number of CPU where cpufreq settings shall be modified. -d --min <FREQ> new minimum CPU frequency the governor may select. -u --max <FREQ> new maximum CPU frequency the governor may select. -g --governor <GOV> new cpufreq governor. -f --freq <FREQ> specific frequency to be set. Requires userspace governor to be available and loaded. -r --related modify all hardware-related CPUs at the same time -h --help Prints out the help screen. REMARKS
Omitting the -c or --cpu argument is equivalent to setting it to zero. The -f FREQ, --freq FREQ parameter cannot be combined with any other parameter except the -c CPU, --cpu CPU parameter. FREQuencies can be passed in Hz, kHz (default), MHz, GHz, or THz by postfixing the value with the wanted unit name, without any space (fre- quency in kHz =^ Hz * 0.001 =^ MHz * 1000 =^ GHz * 1000000). On Linux kernels up to 2.6.29, the -r or --related parameter is ignored. FILES
/sys/devices/system/cpu/cpu*/cpufreq/ /proc/cpufreq (deprecated) /proc/sys/cpu/ (deprecated) AUTHORS
Dominik Brodowski <linux@brodo.de> - author Mattia Dongili<malattia@gmail.com> - first autolibtoolization SEE ALSO
cpufreq-info(1) Mattia Dongili 0.1 cpufreq-set(1)
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