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fix connector throughput is negative value

This commit is contained in:
yanghaitao 2020-07-20 14:29:48 +08:00
parent bbfcbbe26d
commit ee751be1ca
1 changed files with 6 additions and 3 deletions
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9
mindspore/ccsrc/minddata/dataset/engine/perf/connector_throughput.cc
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@ -43,14 +43,17 @@ Status ConnectorThroughput::Sample() {
out_buffer_count_row[col] = cur_out_buffer_count;
auto sz = timestamps_.size();
cur_time = std::chrono::steady_clock::now();
auto _dt = std::chrono::duration_cast<std::chrono::microseconds>(timestamps_[0][sz - 1] - timestamps_[0][sz - 2]);
auto dt = std::chrono::duration<double>(_dt).count();
double dt = 0;
if (sz > 1) {
auto _dt = std::chrono::duration_cast<std::chrono::microseconds>(timestamps_[0][sz - 1] - timestamps_[0][sz - 2]);
dt = std::chrono::duration<double>(_dt).count();
}
auto prev_out_buffer_count = out_buffer_count_table_[col][out_buffer_count_table_.size() - 1];
if (dt != 0) {
auto thr = (cur_out_buffer_count - prev_out_buffer_count) / (1000 * dt);
throughput_row[col] = thr;
} else {
throughput_row[col] = -1;
throughput_row[col] = 0;
}
col++;
}