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// SPDX-License-Identifier: GPL-3.0-or-later
#include "perflib-rrd.h"
#define COLLECTED_NUMBER_PRECISION 10000
RRDDIM *perflib_rrddim_add(RRDSET *st, const char *id, const char *name, collected_number multiplier, collected_number divider, COUNTER_DATA *cd) {
RRD_ALGORITHM algorithm = RRD_ALGORITHM_ABSOLUTE;
switch (cd->current.CounterType) {
case PERF_COUNTER_COUNTER:
case PERF_SAMPLE_COUNTER:
case PERF_COUNTER_BULK_COUNT:
// (N1 - N0) / ((D1 - D0) / F)
// multiplier *= cd->current.Frequency / 10000000;
// tested, the frequency is not that useful for netdata
// we get right results without it.
algorithm = RRD_ALGORITHM_INCREMENTAL;
break;
case PERF_COUNTER_QUEUELEN_TYPE:
case PERF_COUNTER_100NS_QUEUELEN_TYPE:
case PERF_COUNTER_OBJ_TIME_QUEUELEN_TYPE:
case PERF_COUNTER_LARGE_QUEUELEN_TYPE:
case PERF_AVERAGE_BULK: // normally not displayed
// (N1 - N0) / (D1 - D0)
algorithm = RRD_ALGORITHM_INCREMENTAL;
break;
case PERF_OBJ_TIME_TIMER:
case PERF_COUNTER_TIMER:
case PERF_100NSEC_TIMER:
case PERF_PRECISION_SYSTEM_TIMER:
case PERF_PRECISION_100NS_TIMER:
case PERF_PRECISION_OBJECT_TIMER:
case PERF_SAMPLE_FRACTION:
// 100 * (N1 - N0) / (D1 - D0)
multiplier *= 100;
algorithm = RRD_ALGORITHM_INCREMENTAL;
break;
case PERF_COUNTER_TIMER_INV:
case PERF_100NSEC_TIMER_INV:
// 100 * (1 - ((N1 - N0) / (D1 - D0)))
divider *= COLLECTED_NUMBER_PRECISION;
algorithm = RRD_ALGORITHM_ABSOLUTE;
break;
case PERF_COUNTER_MULTI_TIMER:
// 100 * ((N1 - N0) / ((D1 - D0) / TB)) / B1
divider *= COLLECTED_NUMBER_PRECISION;
algorithm = RRD_ALGORITHM_ABSOLUTE;
break;
case PERF_100NSEC_MULTI_TIMER:
// 100 * ((N1 - N0) / (D1 - D0)) / B1
divider *= COLLECTED_NUMBER_PRECISION;
algorithm = RRD_ALGORITHM_ABSOLUTE;
break;
case PERF_COUNTER_MULTI_TIMER_INV:
case PERF_100NSEC_MULTI_TIMER_INV:
// 100 * (B1 - ((N1 - N0) / (D1 - D0)))
divider *= COLLECTED_NUMBER_PRECISION;
algorithm = RRD_ALGORITHM_ABSOLUTE;
break;
case PERF_COUNTER_RAWCOUNT:
case PERF_COUNTER_LARGE_RAWCOUNT:
// N as decimal
algorithm = RRD_ALGORITHM_ABSOLUTE;
break;
case PERF_COUNTER_RAWCOUNT_HEX:
case PERF_COUNTER_LARGE_RAWCOUNT_HEX:
// N as hexadecimal
algorithm = RRD_ALGORITHM_ABSOLUTE;
break;
case PERF_COUNTER_DELTA:
case PERF_COUNTER_LARGE_DELTA:
// N1 - N0
algorithm = RRD_ALGORITHM_ABSOLUTE;
break;
case PERF_RAW_FRACTION:
case PERF_LARGE_RAW_FRACTION:
// 100 * N / B
algorithm = RRD_ALGORITHM_ABSOLUTE;
divider *= COLLECTED_NUMBER_PRECISION;
break;
case PERF_AVERAGE_TIMER:
// ((N1 - N0) / TB) / (B1 - B0)
// divider *= cd->current.Frequency / 10000000;
algorithm = RRD_ALGORITHM_INCREMENTAL;
break;
case PERF_ELAPSED_TIME:
// (D0 - N0) / F
algorithm = RRD_ALGORITHM_ABSOLUTE;
break;
case PERF_COUNTER_TEXT:
case PERF_SAMPLE_BASE:
case PERF_AVERAGE_BASE:
case PERF_COUNTER_MULTI_BASE:
case PERF_RAW_BASE:
case PERF_COUNTER_NODATA:
case PERF_PRECISION_TIMESTAMP:
default:
break;
}
return rrddim_add(st, id, name, multiplier, divider, algorithm);
}
#define VALID_DELTA(cd) \
((cd)->previous.Time > 0 && (cd)->current.Data >= (cd)->previous.Data && (cd)->current.Time > (cd)->previous.Time)
collected_number perflib_rrddim_set_by_pointer(RRDSET *st, RRDDIM *rd, COUNTER_DATA *cd) {
ULONGLONG numerator = 0;
LONGLONG denominator = 0;
double doubleValue = 0.0;
collected_number value;
switch(cd->current.CounterType) {
case PERF_COUNTER_COUNTER:
case PERF_SAMPLE_COUNTER:
case PERF_COUNTER_BULK_COUNT:
// (N1 - N0) / ((D1 - D0) / F)
value = (collected_number)cd->current.Data;
break;
case PERF_COUNTER_QUEUELEN_TYPE:
case PERF_COUNTER_100NS_QUEUELEN_TYPE:
case PERF_COUNTER_OBJ_TIME_QUEUELEN_TYPE:
case PERF_COUNTER_LARGE_QUEUELEN_TYPE:
case PERF_AVERAGE_BULK: // normally not displayed
// (N1 - N0) / (D1 - D0)
value = (collected_number)cd->current.Data;
break;
case PERF_OBJ_TIME_TIMER:
case PERF_COUNTER_TIMER:
case PERF_100NSEC_TIMER:
case PERF_PRECISION_SYSTEM_TIMER:
case PERF_PRECISION_100NS_TIMER:
case PERF_PRECISION_OBJECT_TIMER:
case PERF_SAMPLE_FRACTION:
// 100 * (N1 - N0) / (D1 - D0)
value = (collected_number)cd->current.Data;
break;
case PERF_COUNTER_TIMER_INV:
case PERF_100NSEC_TIMER_INV:
// 100 * (1 - ((N1 - N0) / (D1 - D0)))
if(!VALID_DELTA(cd)) return 0;
numerator = cd->current.Data - cd->previous.Data;
denominator = cd->current.Time - cd->previous.Time;
doubleValue = 100.0 * (1.0 - ((double)numerator / (double)denominator));
// printf("Display value is (timer-inv): %f%%\n", doubleValue);
value = (collected_number)(doubleValue * COLLECTED_NUMBER_PRECISION);
break;
case PERF_COUNTER_MULTI_TIMER:
// 100 * ((N1 - N0) / ((D1 - D0) / TB)) / B1
if(!VALID_DELTA(cd)) return 0;
numerator = cd->current.Data - cd->previous.Data;
denominator = cd->current.Time - cd->previous.Time;
denominator /= cd->current.Frequency;
doubleValue = 100.0 * ((double)numerator / (double)denominator) / cd->current.MultiCounterData;
// printf("Display value is (multi-timer): %f%%\n", doubleValue);
value = (collected_number)(doubleValue * COLLECTED_NUMBER_PRECISION);
break;
case PERF_100NSEC_MULTI_TIMER:
// 100 * ((N1 - N0) / (D1 - D0)) / B1
if(!VALID_DELTA(cd)) return 0;
numerator = cd->current.Data - cd->previous.Data;
denominator = cd->current.Time - cd->previous.Time;
doubleValue = 100.0 * ((double)numerator / (double)denominator) / (double)cd->current.MultiCounterData;
// printf("Display value is (100ns multi-timer): %f%%\n", doubleValue);
value = (collected_number)(doubleValue * COLLECTED_NUMBER_PRECISION);
break;
case PERF_COUNTER_MULTI_TIMER_INV:
case PERF_100NSEC_MULTI_TIMER_INV:
// 100 * (B1 - ((N1 - N0) / (D1 - D0)))
if(!VALID_DELTA(cd)) return 0;
numerator = cd->current.Data - cd->previous.Data;
denominator = cd->current.Time - cd->previous.Time;
doubleValue = 100.0 * ((double)cd->current.MultiCounterData - ((double)numerator / (double)denominator));
// printf("Display value is (multi-timer-inv): %f%%\n", doubleValue);
value = (collected_number)(doubleValue * COLLECTED_NUMBER_PRECISION);
break;
case PERF_COUNTER_RAWCOUNT:
case PERF_COUNTER_LARGE_RAWCOUNT:
// N as decimal
value = (collected_number)cd->current.Data;
break;
case PERF_COUNTER_RAWCOUNT_HEX:
case PERF_COUNTER_LARGE_RAWCOUNT_HEX:
// N as hexadecimal
value = (collected_number)cd->current.Data;
break;
case PERF_COUNTER_DELTA:
case PERF_COUNTER_LARGE_DELTA:
if(!VALID_DELTA(cd)) return 0;
value = (collected_number)(cd->current.Data - cd->previous.Data);
break;
case PERF_RAW_FRACTION:
case PERF_LARGE_RAW_FRACTION:
// 100 * N / B
if(!cd->current.Time) return 0;
doubleValue = 100.0 * (double)cd->current.Data / (double)cd->current.Time;
// printf("Display value is (fraction): %f%%\n", doubleValue);
value = (collected_number)(doubleValue * COLLECTED_NUMBER_PRECISION);
break;
default:
return 0;
}
return rrddim_set_by_pointer(st, rd, value);
}
/*
double perflibCalculateValue(RAW_DATA *current, RAW_DATA *previous) {
ULONGLONG numerator = 0;
LONGLONG denominator = 0;
double doubleValue = 0.0;
DWORD dwordValue = 0;
if (NULL == previous) {
// Return error if the counter type requires two samples to calculate the value.
switch (current->CounterType) {
default:
if (PERF_DELTA_COUNTER != (current->CounterType & PERF_DELTA_COUNTER))
break;
__fallthrough;
// fallthrough
case PERF_AVERAGE_TIMER: // Special case.
case PERF_AVERAGE_BULK: // Special case.
// printf(" > The counter type requires two samples but only one sample was provided.\n");
return NAN;
}
}
else {
if (current->CounterType != previous->CounterType) {
// printf(" > The samples have inconsistent counter types.\n");
return NAN;
}
// Check for integer overflow or bad data from provider (the data from
// sample 2 must be greater than the data from sample 1).
if (current->Data < previous->Data)
{
// Can happen for various reasons. Commonly occurs with the Process counterset when
// multiple processes have the same name and one of them starts or stops.
// Normally you'll just drop the older sample and continue.
// printf("> current (%llu) is smaller than previous (%llu).\n", current->Data, previous->Data);
return NAN;
}
}
switch (current->CounterType) {
case PERF_COUNTER_COUNTER:
case PERF_SAMPLE_COUNTER:
case PERF_COUNTER_BULK_COUNT:
// (N1 - N0) / ((D1 - D0) / F)
numerator = current->Data - previous->Data;
denominator = current->Time - previous->Time;
dwordValue = (DWORD)(numerator / ((double)denominator / current->Frequency));
//printf("Display value is (counter): %lu%s\n", (unsigned long)dwordValue,
// (previous->CounterType == PERF_SAMPLE_COUNTER) ? "" : "/sec");
return (double)dwordValue;
case PERF_COUNTER_QUEUELEN_TYPE:
case PERF_COUNTER_100NS_QUEUELEN_TYPE:
case PERF_COUNTER_OBJ_TIME_QUEUELEN_TYPE:
case PERF_COUNTER_LARGE_QUEUELEN_TYPE:
case PERF_AVERAGE_BULK: // normally not displayed
// (N1 - N0) / (D1 - D0)
numerator = current->Data - previous->Data;
denominator = current->Time - previous->Time;
doubleValue = (double)numerator / denominator;
if (previous->CounterType != PERF_AVERAGE_BULK) {
// printf("Display value is (queuelen): %f\n", doubleValue);
return doubleValue;
}
return NAN;
case PERF_OBJ_TIME_TIMER:
case PERF_COUNTER_TIMER:
case PERF_100NSEC_TIMER:
case PERF_PRECISION_SYSTEM_TIMER:
case PERF_PRECISION_100NS_TIMER:
case PERF_PRECISION_OBJECT_TIMER:
case PERF_SAMPLE_FRACTION:
// 100 * (N1 - N0) / (D1 - D0)
numerator = current->Data - previous->Data;
denominator = current->Time - previous->Time;
doubleValue = (double)(100 * numerator) / denominator;
// printf("Display value is (timer): %f%%\n", doubleValue);
return doubleValue;
case PERF_COUNTER_TIMER_INV:
// 100 * (1 - ((N1 - N0) / (D1 - D0)))
numerator = current->Data - previous->Data;
denominator = current->Time - previous->Time;
doubleValue = 100 * (1 - ((double)numerator / denominator));
// printf("Display value is (timer-inv): %f%%\n", doubleValue);
return doubleValue;
case PERF_100NSEC_TIMER_INV:
// 100 * (1- (N1 - N0) / (D1 - D0))
numerator = current->Data - previous->Data;
denominator = current->Time - previous->Time;
doubleValue = 100 * (1 - (double)numerator / denominator);
// printf("Display value is (100ns-timer-inv): %f%%\n", doubleValue);
return doubleValue;
case PERF_COUNTER_MULTI_TIMER:
// 100 * ((N1 - N0) / ((D1 - D0) / TB)) / B1
numerator = current->Data - previous->Data;
denominator = current->Time - previous->Time;
denominator /= current->Frequency;
doubleValue = 100 * ((double)numerator / denominator) / current->MultiCounterData;
// printf("Display value is (multi-timer): %f%%\n", doubleValue);
return doubleValue;
case PERF_100NSEC_MULTI_TIMER:
// 100 * ((N1 - N0) / (D1 - D0)) / B1
numerator = current->Data - previous->Data;
denominator = current->Time - previous->Time;
doubleValue = 100 * ((double)numerator / (double)denominator) / (double)current->MultiCounterData;
// printf("Display value is (100ns multi-timer): %f%%\n", doubleValue);
return doubleValue;
case PERF_COUNTER_MULTI_TIMER_INV:
case PERF_100NSEC_MULTI_TIMER_INV:
// 100 * (B1 - ((N1 - N0) / (D1 - D0)))
numerator = current->Data - previous->Data;
denominator = current->Time - previous->Time;
doubleValue = 100.0 * ((double)current->MultiCounterData - ((double)numerator / (double)denominator));
// printf("Display value is (multi-timer-inv): %f%%\n", doubleValue);
return doubleValue;
case PERF_COUNTER_RAWCOUNT:
case PERF_COUNTER_LARGE_RAWCOUNT:
// N as decimal
// printf("Display value is (rawcount): %llu\n", current->Data);
return (double)current->Data;
case PERF_COUNTER_RAWCOUNT_HEX:
case PERF_COUNTER_LARGE_RAWCOUNT_HEX:
// N as hexadecimal
// printf("Display value is (hex): 0x%llx\n", current->Data);
return (double)current->Data;
case PERF_COUNTER_DELTA:
case PERF_COUNTER_LARGE_DELTA:
// N1 - N0
// printf("Display value is (delta): %llu\n", current->Data - previous->Data);
return (double)(current->Data - previous->Data);
case PERF_RAW_FRACTION:
case PERF_LARGE_RAW_FRACTION:
// 100 * N / B
doubleValue = 100.0 * (double)current->Data / (double)current->Time;
// printf("Display value is (fraction): %f%%\n", doubleValue);
return doubleValue;
case PERF_AVERAGE_TIMER:
// ((N1 - N0) / TB) / (B1 - B0)
numerator = current->Data - previous->Data;
denominator = current->Time - previous->Time;
doubleValue = (double)numerator / (double)current->Frequency / (double)denominator;
// printf("Display value is (average timer): %f seconds\n", doubleValue);
return doubleValue;
case PERF_ELAPSED_TIME:
// (D0 - N0) / F
doubleValue = (double)(current->Time - current->Data) / (double)current->Frequency;
// printf("Display value is (elapsed time): %f seconds\n", doubleValue);
return doubleValue;
case PERF_COUNTER_TEXT:
case PERF_SAMPLE_BASE:
case PERF_AVERAGE_BASE:
case PERF_COUNTER_MULTI_BASE:
case PERF_RAW_BASE:
case PERF_COUNTER_NODATA:
case PERF_PRECISION_TIMESTAMP:
// printf(" > Non-printing counter type: 0x%08x\n", current->CounterType);
return NAN;
break;
default:
// printf(" > Unrecognized counter type: 0x%08x\n", current->CounterType);
return NAN;
break;
}
}
*/
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