Michael Closson wrote:
Hello All.
I'm looking for ways to do chip/core/thread detection on versions of solaris
that don't support the core_id field in kstat's cpu_info.
For which versions of Solaris are you interested?
For AMD/Intel procs I can use sysconf() and CPUID.
For Sparc procs (like Niagra), I don't know how to get this information. Is
there an assemply language instruction similar to CPUID?
For sun4u systems, this information is generally encoded in the cpu id,
in a platform specific way.
For sun4v, as Dave said, the mappings are defined by a "machine
description" that the Hypervisor produces.
For Niagara I, cpuid/4 will give you a core / instruction pipeline id.
Obviously that's very processor specific. :)
Looking ahead, providing better observability into the hardware sharing
relationships existing between CPU is something we're looking at now.
Obviously, we can only go so far with psrinfo -vp. :)
-Eric
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