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Update StorageQueueInfo::getTagThrottlingRatio implementation

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sfc-gh-tclinkenbeard 2023-05-26 11:03:37 -07:00 committed by Trevor Clinkenbeard
parent 2385dd36f3
commit ae6167e576
1 changed files with 6 additions and 4 deletions
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10
fdbserver/Ratekeeper.actor.cpp
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@ -1391,11 +1391,13 @@ UpdateCommitCostRequest StorageQueueInfo::refreshCommitCost(double elapsed) {
Optional<double> StorageQueueInfo::getTagThrottlingRatio(int64_t storageTargetBytes, int64_t storageSpringBytes) const {
auto const storageQueue = getStorageQueueBytes();
if (storageQueue < storageTargetBytes - storageSpringBytes) {
return {};
// TODO: Remove duplicate calculation from Ratekeeper::updateRate
double inverseResult = std::min(
2.0, (storageQueue - storageTargetBytes + storageSpringBytes) / static_cast<double>(storageSpringBytes));
if (inverseResult > 0) {
return 1.0 / inverseResult;
} else {
return std::max(
0.0, static_cast<double>((storageTargetBytes + storageSpringBytes) - storageQueue) / storageSpringBytes);
return {};
}
}