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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "qps_analyzer.h"
namespace vbench {
QpsAnalyzer::QpsAnalyzer(Handler<Request> &next)
: _next(next),
_qps(0),
_samples(0),
_begin(0),
_cnt(0)
{
}
void
QpsAnalyzer::handle(Request::UP request)
{
if (request->status() == Request::STATUS_OK) {
addEndTime(request->endTime());
}
_next.handle(std::move(request));
}
void
QpsAnalyzer::report()
{
fprintf(stdout, "end qps: %g\n", _qps);
}
void
QpsAnalyzer::addEndTime(double end)
{
++_cnt;
if (end < _begin) {
_begin = end;
}
if ((end - _begin) > 5.0) {
double newQps = ((double)_cnt) / (end - _begin);
double factor = (_samples == 0) ? 1.0 : 0.75;
_qps = (((1 - factor) * _qps) + (factor * newQps));
++_samples;
_begin = end;
_cnt = 0;
fprintf(stderr, "qps: %g\n", _qps);
}
}
} // namespace vbench
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