add new leader slot metric to track account contention throttling (#27654)
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@ -104,6 +104,11 @@ struct LeaderSlotPacketCountMetrics {
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// then hit the age limit after failing to be comitted.
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executed_transactions_failed_commit_count: u64,
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// total number of transactions that were excluded from the block because there were concurrent write locks active.
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// These transactions are added back to the buffered queue and are already counted in
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// `self.retrayble_errored_transaction_count`.
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account_lock_throttled_transactions_count: u64,
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// total number of transactions that were excluded from the block because they were too expensive
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// according to the cost model. These transactions are added back to the buffered queue and are
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// already counted in `self.retrayble_errored_transaction_count`.
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@ -197,6 +202,11 @@ impl LeaderSlotPacketCountMetrics {
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self.executed_transactions_failed_commit_count as i64,
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i64
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),
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(
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"account_lock_throttled_transactions_count",
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self.account_lock_throttled_transactions_count as i64,
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i64
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),
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(
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"cost_model_throttled_transactions_count",
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self.cost_model_throttled_transactions_count as i64,
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@ -394,6 +404,7 @@ impl LeaderSlotMetricsTracker {
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cost_model_throttled_transactions_count,
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cost_model_us,
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ref execute_and_commit_timings,
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error_counters,
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..
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} = process_transactions_summary;
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@ -441,6 +452,13 @@ impl LeaderSlotMetricsTracker {
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.saturating_sub(retryable_transaction_indexes.len()) as u64
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);
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saturating_add_assign!(
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leader_slot_metrics
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.packet_count_metrics
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.account_lock_throttled_transactions_count,
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error_counters.account_in_use as u64
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);
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saturating_add_assign!(
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leader_slot_metrics
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.packet_count_metrics
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