Cost Model to limit transactions which are not parallelizeable (#16694)
* * Add following to banking_stage: 1. CostModel as immutable ref shared between threads, to provide estimated cost for transactions. 2. CostTracker which is shared between threads, tracks transaction costs for each block. * replace hard coded program ID with id() calls * Add Account Access Cost as part of TransactionCost. Account Access cost are weighted differently between read and write, signed and non-signed. * Establish instruction_execution_cost_table, add function to update or insert instruction cost, unit tested. It is read-only for now; it allows Replay to insert realtime instruction execution costs to the table. * add test for cost_tracker atomically try_add operation, serves as safety guard for future changes * check cost against local copy of cost_tracker, return transactions that would exceed limit as unprocessed transaction to be buffered; only apply bank processed transactions cost to tracker; * bencher to new banking_stage with max cost limit to allow cost model being hit consistently during bench iterations
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@@ -19,6 +19,8 @@ pub mod cluster_slots_service;
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pub mod commitment_service;
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pub mod completed_data_sets_service;
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pub mod consensus;
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pub mod cost_model;
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pub mod cost_tracker;
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pub mod fetch_stage;
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pub mod fork_choice;
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pub mod gen_keys;
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