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PMC_GET_DRIVER_STAT... FreeBSD Library Functions Manual PMC_GET_DRIVER_STAT... NAME pmc_get_driver_stats -- retrieve driver statistics LIBRARY Performance Monitoring Counters Interface Library (libpmc, -lpmc) SYNOPSIS #include <pmc.h> int pmc_get_driver_stats(struct pmc_driverstats *gms); DESCRIPTION The function pmc_get_driver_statistics() retrieves a snapshot of the us- age statistics maintained by hwpmc(4) into the memory area pointed to by argument gms. The returned structure includes the following fields: pm_intr_ignored The number of sampling interrupts ignored. pm_intr_processed The number of sampling interrupts processed. pm_intr_bufferfull The number of sampling interrupts dropped due to lack of space in the sample buffer. pm_syscalls The number of system calls into hwpmc(4). pm_syscalls_errors The number of system calls into hwpmc(4) that failed. pm_buffer_requests The number of log buffer requests so far. pm_buffer_requests_failed The number of log buffer requests that failed due to lack of buffers. pm_log_sweeps The number of sample buffer processing sweeps. 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. SEE ALSO pmc(3), hwpmc(4) FreeBSD 13.0 November 25, 2007 FreeBSD 13.0
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO
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