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Optimized hashrate calculation

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This commit is contained in:
SChernykh 2019-11-09 17:29:12 +01:00
parent c235145121
commit 426bc8f0c4
3 changed files with 19 additions and 34 deletions
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48
src/backend/common/Hashrate.cpp
View file

@ -47,7 +47,6 @@ inline static const char *format(double h, char *buf, size_t size)
xmrig::Hashrate::Hashrate(size_t threads) :
m_highest(0.0),
m_threads(threads)
{
m_counts = new uint64_t*[threads];
@ -100,30 +99,30 @@ double xmrig::Hashrate::calc(size_t threadId, size_t ms) const
uint64_t earliestHashCount = 0;
uint64_t earliestStamp = 0;
uint64_t lastestStamp = 0;
uint64_t lastestHashCnt = 0;
bool haveFullSet = false;
for (size_t i = 1; i < kBucketSize; i++) {
const size_t idx = (m_top[threadId] - i) & kBucketMask;
const uint64_t timeStampLimit = xmrig::Chrono::highResolutionMSecs() - ms;
uint64_t* timestamps = m_timestamps[threadId];
uint64_t* counts = m_counts[threadId];
if (m_timestamps[threadId][idx] == 0) {
const size_t idx_start = (m_top[threadId] - 1) & kBucketMask;
size_t idx = idx_start;
uint64_t lastestStamp = timestamps[idx];
uint64_t lastestHashCnt = counts[idx];
do {
if (timestamps[idx] < timeStampLimit) {
haveFullSet = (timestamps[idx] != 0);
if (idx != idx_start) {
idx = (idx + 1) & kBucketMask;
earliestStamp = timestamps[idx];
earliestHashCount = counts[idx];
}
break;
}
if (lastestStamp == 0) {
lastestStamp = m_timestamps[threadId][idx];
lastestHashCnt = m_counts[threadId][idx];
}
if (xmrig::Chrono::highResolutionMSecs() - m_timestamps[threadId][idx] > ms) {
haveFullSet = true;
break;
}
earliestStamp = m_timestamps[threadId][idx];
earliestHashCount = m_counts[threadId][idx];
}
idx = (idx - 1) & kBucketMask;
} while (idx != idx_start);
if (!haveFullSet || earliestStamp == 0 || lastestStamp == 0) {
return nan("");
@ -150,15 +149,6 @@ void xmrig::Hashrate::add(size_t threadId, uint64_t count, uint64_t timestamp)
}
void xmrig::Hashrate::updateHighest()
{
double highest = calc(ShortInterval);
if (std::isnormal(highest) && highest > m_highest) {
m_highest = highest;
}
}
const char *xmrig::Hashrate::format(double h, char *buf, size_t size)
{
return ::format(h, buf, size);

3
src/backend/common/Hashrate.h
View file

@ -53,9 +53,7 @@ public:
double calc(size_t ms) const;
double calc(size_t threadId, size_t ms) const;
void add(size_t threadId, uint64_t count, uint64_t timestamp);
void updateHighest();
inline double highest() const { return m_highest; }
inline size_t threads() const { return m_threads; }
static const char *format(double h, char *buf, size_t size);
@ -70,7 +68,6 @@ private:
constexpr static size_t kBucketSize = 2 << 11;
constexpr static size_t kBucketMask = kBucketSize - 1;
double m_highest;
size_t m_threads;
uint32_t* m_top;
uint64_t** m_counts;

2
src/backend/common/Workers.cpp
View file

@ -144,8 +144,6 @@ void xmrig::Workers<T>::tick(uint64_t)
d_ptr->hashrate->add(handle->id(), handle->worker()->hashCount(), handle->worker()->timestamp());
}
d_ptr->hashrate->updateHighest();
}