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Top Forums UNIX for Advanced & Expert Users UNIX distribution for hardware checking Post 302195871 by Ebbi on Friday 16th of May 2008 05:27:31 AM
Old 05-16-2008
Do you mean real UNIX or x86 stuff?

IBM and HP have media for offline diagnostics.
 

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PMC_ENABLE(3)						   BSD Library Functions Manual 					     PMC_ENABLE(3)

NAME
pmc_disable, pmc_enable -- administrative control of hardware performance counters LIBRARY
Performance Counters Library (libpmc, -lpmc) SYNOPSIS
#include <pmc.h> int pmc_disable(int cpu, int pmc); int pmc_enable(int cpu, int pmc); DESCRIPTION
These functions allow specific hardware performance monitoring counters in a system to be disabled and enabled administratively. The hard- ware performance counters available on each CPU are numbered using small non-negative integers, in a system dependent manner. Disabled coun- ters will not be available to applications for use. The invoking process needs to have the PRIV_PMC_MANAGE privilege to perform these operations. Function pmc_disable() disables the hardware counter numbered by argument pmc on CPU number cpu. Function pmc_enable() enables the hardware counter numbered by argument pmc on CPU number cpu. IMPLEMENTATION NOTES
Hardware PMCs that are currently in use by applications cannot be disabled. Allocation of a process scope software PMC marks all hardware PMCs in the system with the same pmc number as being in-use. RETURN VALUES
Upon successful completion, the value 0 is returned; otherwise the value -1 is returned and the global variable errno is set to indicate the error. ERRORS
A call to these functions may fail with the following errors: [EBUSY] Function pmc_disable() specified a hardware PMC is currently in use. [EINVAL] Arguments cpu or pmc were invalid. [ENXIO] Argument cpu specified a disabled or absent CPU. [EPERM] The current process lacks sufficient privilege to perform this operation. SEE ALSO
pmc(3), pmc_cpuinfo(3), pmc_pmcinfo(3), hwpmc(4), pmccontrol(8), priv_check(9) BSD
September 22, 2008 BSD
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