02-13-2013
Number of CPU & Number of Core
HTML Code:
root:/>
# lscfg -vp|grep -c -E 'proc.*Processor'
8
root:/>
# lscfg -vpl sysplanar0 | grep -i way
8 WAY PROC CUOD :
8 WAY PROC CUOD :
8 WAY PROC CUOD :
8 WAY PROC CUOD :
8 WAY PROC CUOD :
8 WAY PROC CUOD :
I have this output and need to know how to interpret.
The number of CPU is 8 for sure. When you say the number of Cores, what is it in this case?
lscfg -vpl sysplanar0 | grep -i way shows
8 WAY PROC CUOD, so is it 8 Cores?
An old machine (model: IBM,9111-520) shows 2 CPUs, but no result on
lscfg -vpl sysplanar0 | grep -i way. In that case, it has no Core??
Please advise.
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LEARN ABOUT DEBIAN
svsematest
svsematest(8) svsematest(8)
NAME
svsematest - Start two threads or fork two processes and measure the latency of SYSV semaphores
SYNTAX
svsematest [-a|-a PROC] [-b USEC] [-d DIST] [-f] [-i INTV] [-l loops] [-p PRIO] [-t|-t NUM]
DESCRIPTION
The program svsematest starts two threads or, optionally, forks two processes that are synchronized via SYSV semaphores and measures the
latency between releasing a semaphore on one side and getting it on the other side.
OPTIONS
-a, --affinity[=PROC]
Run on procesor number PROC. If PROC is not specified, run on current processor.
-b, --breaktrace=USEC
Send break trace command when latency > USEC. This is a debugging option to control the latency tracer in the realtime preemption
patch. It is useful to track down unexpected large latencies of a system.
-d, --distance=DIST
Set the distance of thread intervals in microseconds (default is 500 us). When cylictest is called with the -t option and more than
one thread is created, then this distance value is added to the interval of the threads: Interval(thread N) = Interval(thread N-1) +
DIST
-f, --fork
Instead of creating threads (which is the default), fork new processes
-i, --interval=INTV
Set the base interval of the thread(s) in microseconds (default is 1000 us). This sets the interval of the first thread. See also
-d.
-l, --loops=LOOPS
Set the number of loops. The default is 0 (endless). This option is useful for automated tests with a given number of test cycles.
svsematest is stopped once the number of timer intervals has been reached.
-p, --prio=PRIO
Set the priority of the process.
-t, --threads[=NUM]
Set the number of test threads (default is 1, if this option is not given). If NUM is specified, create NUM test threads. If NUM is
not specifed, NUM is set to the number of available CPUs.
EXAMPLES
The following example was running on a 4-way CPU:
# svsematest -a -t -p99 -i100 -d25 -l1000000
#0: ID13110, P99, CPU0, I100; #1: ID13111, P99, CPU0, Cycles 1000000
#2: ID13112, P98, CPU1, I125; #3: ID13113, P98, CPU1, Cycles 813573
#4: ID13114, P97, CPU2, I150; #5: ID13115, P97, CPU2, Cycles 667285
#6: ID13116, P96, CPU3, I175; #7: ID13117, P96, CPU3, Cycles 591403
#1 -> #0, Min 1, Cur 2, Avg 2, Max 12
#3 -> #2, Min 1, Cur 3, Avg 2, Max 12
#5 -> #4, Min 1, Cur 3, Avg 3, Max 12
#7 -> #6, Min 1, Cur 2, Avg 3, Max 11
AUTHORS
Carsten Emde <C.Emde@osadl.org>
SEE ALSO
semop(2)
0.1 svsematest(8)