b2ca2e50b9
metadata changes:
- log pmc sample rate with pmcallocate
- log proc flags with thread / process logging
to identify user vs kernel threads
fixes:
- use log cpuid to translate event id to event name
Implement rudimentary summary command to track sample
counts by thread and process name within a pmc log.
% make -j4 buildkernel >& /dev/null &
% sudo pmcstat -S unhalted_core_cycles -S llc-misses -O foo sleep 15
% pmc summary foo
cpu_clk_unhalted.thread_p_any:
idle: 138108207162
clang-6.0: 105336158004
sh: 72340108510
make: 8642012963
kernel: 7754011631
longest_lat_cache.miss:
clang-6.0: 87502625
sh: 40901227
make: 5500165
kernel: 3300099
awk: 2000060
% pmc summary -f ~/foo
idx: 278 name: cpu_clk_unhalted.thread_p_any rate: 2000003
idle: 69054
clang-6.0: 52668
sh: 36170
make: 4321
kernel: 3877
hwpmc: proc(7445): 3319
awk: 1289
xargs: 357
rand_harvestq: 181
mtree: 102
intr: 53
zfskern: 31
usb: 7
pagedaemon: 4
ntpd: 3
syslogd: 1
acpi_thermal: 1
logger: 1
syncer: 1
snmptrapd: 1
sleep: 1
idx: 17 name: longest_lat_cache.miss rate: 100003
clang-6.0: 875
sh: 409
make: 55
kernel: 33
awk: 20
hwpmc: proc(7445): 14
xargs: 9
idle: 8
intr: 3
zfskern: 2
129 lines
4.5 KiB
C
129 lines
4.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2003,2004 Joseph Koshy
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _PMC_H_
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#define _PMC_H_
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <sys/pmc.h>
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/*
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* Driver statistics.
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*/
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struct pmc_driverstats {
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unsigned int pm_intr_ignored; /* #interrupts ignored */
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unsigned int pm_intr_processed; /* #interrupts processed */
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unsigned int pm_intr_bufferfull; /* #interrupts with ENOSPC */
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unsigned int pm_syscalls; /* #syscalls */
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unsigned int pm_syscall_errors; /* #syscalls with errors */
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unsigned int pm_buffer_requests; /* #buffer requests */
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unsigned int pm_buffer_requests_failed; /* #failed buffer requests */
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unsigned int pm_log_sweeps; /* #sample buffer processing
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passes */
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};
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/*
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* CPU information.
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*/
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struct pmc_cpuinfo {
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enum pmc_cputype pm_cputype; /* the kind of CPU */
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uint32_t pm_ncpu; /* number of CPUs */
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uint32_t pm_npmc; /* #PMCs per CPU */
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uint32_t pm_nclass; /* #classes of PMCs */
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struct pmc_classinfo pm_classes[PMC_CLASS_MAX];
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};
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/*
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* Current PMC state.
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*/
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struct pmc_pmcinfo {
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int32_t pm_cpu; /* CPU number */
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struct pmc_info pm_pmcs[]; /* NPMC structs */
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};
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/*
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* Prototypes
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*/
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__BEGIN_DECLS
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int pmc_allocate(const char *_ctrspec, enum pmc_mode _mode, uint32_t _flags,
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int _cpu, pmc_id_t *_pmcid, uint64_t count);
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int pmc_attach(pmc_id_t _pmcid, pid_t _pid);
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int pmc_capabilities(pmc_id_t _pmc, uint32_t *_caps);
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int pmc_configure_logfile(int _fd);
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int pmc_flush_logfile(void);
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int pmc_close_logfile(void);
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int pmc_detach(pmc_id_t _pmcid, pid_t _pid);
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int pmc_disable(int _cpu, int _pmc);
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int pmc_enable(int _cpu, int _pmc);
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int pmc_get_driver_stats(struct pmc_driverstats *_gms);
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int pmc_get_msr(pmc_id_t _pmc, uint32_t *_msr);
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int pmc_init(void);
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int pmc_read(pmc_id_t _pmc, pmc_value_t *_value);
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int pmc_release(pmc_id_t _pmc);
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int pmc_rw(pmc_id_t _pmc, pmc_value_t _newvalue, pmc_value_t *_oldvalue);
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int pmc_set(pmc_id_t _pmc, pmc_value_t _value);
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int pmc_start(pmc_id_t _pmc);
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int pmc_stop(pmc_id_t _pmc);
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int pmc_width(pmc_id_t _pmc, uint32_t *_width);
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int pmc_write(pmc_id_t _pmc, pmc_value_t _value);
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int pmc_writelog(uint32_t _udata);
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int pmc_ncpu(void);
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int pmc_npmc(int _cpu);
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int pmc_cpuinfo(const struct pmc_cpuinfo **_cpu_info);
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int pmc_pmcinfo(int _cpu, struct pmc_pmcinfo **_pmc_info);
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const char *pmc_name_of_capability(enum pmc_caps _c);
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const char *pmc_name_of_class(enum pmc_class _pc);
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const char *pmc_name_of_cputype(enum pmc_cputype _cp);
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const char *pmc_name_of_disposition(enum pmc_disp _pd);
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const char *pmc_name_of_event(enum pmc_event _pe);
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const char *pmc_name_of_mode(enum pmc_mode _pm);
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const char *pmc_name_of_state(enum pmc_state _ps);
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int pmc_event_names_of_class(enum pmc_class _cl, const char ***_eventnames,
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int *_nevents);
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int pmc_pmu_enabled(void);
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void pmc_pmu_print_counters(const char *);
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void pmc_pmu_print_counter_desc(const char *);
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void pmc_pmu_print_counter_desc_long(const char *);
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void pmc_pmu_print_counter_full(const char *);
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uint64_t pmc_pmu_sample_rate_get(const char *);
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int pmc_pmu_pmcallocate(const char *, struct pmc_op_pmcallocate *);
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const char *pmc_pmu_event_get_by_idx(const char *, int idx);
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int pmc_pmu_idx_get_by_event(const char*, const char *);
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int pmc_pmu_stat_mode(const char ***);
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__END_DECLS
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#endif
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