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Added a metric into ProxyMetrics to expose current commit batching window, which can be used as an indicator of the load on the proxy.

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Xin Dong 2020-12-16 11:16:13 -08:00
parent 4dd3fda285
commit 15ac27ef94
1 changed files with 3 additions and 0 deletions
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3
fdbserver/MasterProxyServer.actor.cpp
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@ -65,6 +65,7 @@ struct ProxyStats {
Version lastCommitVersionAssigned;
double transactionRateAllowed, batchTransactionRateAllowed;
double transactionLimit, batchTransactionLimit;
double commitBatchInterval;
// how much of the GRV requests queue was processed in one attempt to hand out read version.
double percentageOfDefaultGRVQueueProcessed;
double percentageOfBatchGRVQueueProcessed;
@ -122,6 +123,7 @@ struct ProxyStats {
[this]() { return this->percentageOfDefaultGRVQueueProcessed; });
specialCounter(cc, "PercentageOfBatchGRVQueueProcessed",
[this]() { return this->percentageOfBatchGRVQueueProcessed; });
specialCounter(cc, "DynamicCommitBatchWindow", [this]() { return this->commitBatchInterval; });
logger = traceCounters("ProxyMetrics", id, SERVER_KNOBS->WORKER_LOGGING_INTERVAL, &cc, "ProxyMetrics");
}
};
@ -1253,6 +1255,7 @@ ACTOR Future<Void> commitBatch(
std::min(SERVER_KNOBS->COMMIT_TRANSACTION_BATCH_INTERVAL_MAX,
target_latency * SERVER_KNOBS->COMMIT_TRANSACTION_BATCH_INTERVAL_SMOOTHER_ALPHA + self->commitBatchInterval * (1-SERVER_KNOBS->COMMIT_TRANSACTION_BATCH_INTERVAL_SMOOTHER_ALPHA)));
self->stats.commitBatchInterval = self->commitBatchInterval;
self->commitBatchesMemBytesCount -= currentBatchMemBytesCount;
ASSERT_ABORT(self->commitBatchesMemBytesCount >= 0);