olegboiko
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Core number on SunOs
Hi Experts,
I'm trying to identify number of cores on Solaris box by using "kstat -p cpu_info" command.
Approach is based on counting different "core_id" per "chip_id" in output
However now I have a machine where "core_id" is completely missed in the output.
"uname -a" says it is SunOs 5.9
Do you know the reason "core_id" is not present in output?
Are there other reliable ways to calculate core per physical processor numbers?
Thanks,
Oleg
I'm trying to identify number of cores on Solaris box by using "kstat -p cpu_info" command.
Approach is based on counting different "core_id" per "chip_id" in output
However now I have a machine where "core_id" is completely missed in the output.
"uname -a" says it is SunOs 5.9
Do you know the reason "core_id" is not present in output?
Are there other reliable ways to calculate core per physical processor numbers?
Thanks,
Oleg
psrinfo -pv
ASKER
Right, but this command shows number of physical processors along with the number of virtual processors which are not necessary cores. They could also be just threads.
So, in general I don't see a way to determine number of cores per physical CPU using only this command.
So, in general I don't see a way to determine number of cores per physical CPU using only this command.
prtdiag -v
ASKER
Ok, this command produces the following output for CPUs
Still, number of cores is not clear here.
I tried to search over the web, is seems like there is no reliable way to identify number of cores per CPU on SunOs 5.9
==================================== CPUs ====================================
E$ CPU CPU
CPU Freq Size Implementation Mask Status Location
--- -------- ---------- --------------------- ----- ------ --------
0 1503 MHz 1MB SUNW,UltraSPARC-IIIi 3.4 on-line MB/P0
1 1503 MHz 1MB SUNW,UltraSPARC-IIIi 3.4 on-line MB/P1
Still, number of cores is not clear here.
I tried to search over the web, is seems like there is no reliable way to identify number of cores per CPU on SunOs 5.9
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ASKER
That's true. I have found somewhat more on the Web:
UltraSPARC III -- single core, no multithreading
UltraSPARC IV, IV+ -- dual core, no multithreading
UltraSPARC T1 -- 4, 6, 8 cores, 4 threads per core
UltraSPARC T2, T2+ -- 8 cores, 8 threads per core
SPARC T3 -- 8 or 16 cores, 8 threads per core
SPARC T4 -- 8 cores, 8 threads per core
There is also a line of SPARC64 processors. Does anybody knows if they are related to the above line of go separately?
UltraSPARC III -- single core, no multithreading
UltraSPARC IV, IV+ -- dual core, no multithreading
UltraSPARC T1 -- 4, 6, 8 cores, 4 threads per core
UltraSPARC T2, T2+ -- 8 cores, 8 threads per core
SPARC T3 -- 8 or 16 cores, 8 threads per core
SPARC T4 -- 8 cores, 8 threads per core
There is also a line of SPARC64 processors. Does anybody knows if they are related to the above line of go separately?
try this -
echo "`hostname` has `kstat cpu_info | grep core_id | uniq | wc -l` cores"
I just tried the kstat cpu_info on 2 servers a T2000 and a V240
the V240 has 2 physicals each with 1 core
and the T2000 showed 8 cores.
the V240 has 2 physicals each with 1 core
and the T2000 showed 8 cores.
ASKER
@jgiordano -- this is a good solution, but as a I posted in the very first comment "core_id" is not present in the output.
I think the reason is that it's SunOS 5.9. SunOS 5.10 that I have in lab show "core_id" in the output of kstat.
I think the reason is that it's SunOS 5.9. SunOS 5.10 that I have in lab show "core_id" in the output of kstat.
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ASKER
Oh, so you suggest that Solaris 9 doesn't support T chips.
I need to check this.
Thanks for an idea!
I need to check this.
Thanks for an idea!
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Should give you some processor info.