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75c62c2793
This is a new global setting which enables or disables CPU profiling per task. For now it only sets/resets the variable based on the global option "profiling.tasks" and supports showing it as well as setting it from the CLI using "show profiling" and "set profiling". The option will be used by a future commit. It was done in a way which should ease future addition of profiling options.
81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
/*
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* include/proto/activity.h
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* This file contains macros and inline functions for activity measurements.
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*
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* Copyright (C) 2000-2018 Willy Tarreau - w@1wt.eu
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _PROTO_ACTIVITY_H
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#define _PROTO_ACTIVITY_H
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#include <common/config.h>
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#include <common/hathreads.h>
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#include <common/time.h>
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#include <types/activity.h>
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#include <proto/freq_ctr.h>
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/* bit fields for "profiling" */
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#define HA_PROF_TASKS 0x00000001 /* enable per-task CPU profiling */
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extern unsigned int profiling;
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extern struct activity activity[MAX_THREADS];
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void report_stolen_time(uint64_t stolen);
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/* Collect date and time information before calling poll(). This will be used
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* to count the run time of the past loop and the sleep time of the next poll.
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* It also makes use of the just updated before_poll timer to count the loop's
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* run time and feed the average loop time metric (in microseconds).
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*/
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static inline void activity_count_runtime()
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{
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uint64_t new_mono_time;
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uint64_t new_cpu_time;
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int64_t stolen;
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uint32_t run_time;
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new_cpu_time = now_cpu_time();
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new_mono_time = now_mono_time();
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if (prev_cpu_time && prev_mono_time) {
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new_cpu_time -= prev_cpu_time;
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new_mono_time -= prev_mono_time;
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stolen = new_mono_time - new_cpu_time;
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if (unlikely(stolen >= 500000)) {
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stolen /= 500000;
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/* more than half a millisecond difference might
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* indicate an undesired preemption.
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*/
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report_stolen_time(stolen);
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}
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}
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run_time = (before_poll.tv_sec - after_poll.tv_sec) * 1000000U + (before_poll.tv_usec - after_poll.tv_usec);
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swrate_add(&activity[tid].avg_loop_us, TIME_STATS_SAMPLES, run_time);
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}
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#endif /* _PROTO_ACTIVITY_H */
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/*
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* Local variables:
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* c-indent-level: 8
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* c-basic-offset: 8
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* End:
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*/
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