search_stats.proto

// Copyright 2010-2021 Google LLC
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Protocol buffer used to store search statistics.

syntax = "proto3";

option java_package = "com.google.ortools.constraintsolver";
option java_multiple_files = true;
option csharp_namespace = "Google.OrTools.ConstraintSolver";

package operations_research;

// Statistics on local search.
message LocalSearchStatistics {
  // First solution statistics collected during search.
  message FirstSolutionStatistics {
    // Name of the strategy used.
    string strategy = 1;
    // Time spent in the decision builder.
    double duration_seconds = 2;
  }
  // Statistics for each first solution called during the search.
  repeated FirstSolutionStatistics first_solution_statistics = 6;
  // Statistics on local search operators called during the search.
  message LocalSearchOperatorStatistics {
    // Name of the operator.
    string local_search_operator = 1;
    // Number of neighbors generated by the operator.
    int64 num_neighbors = 2;
    // Number of neighbors which were filtered.
    int64 num_filtered_neighbors = 3;
    // Number of neighbors eventually accepted.
    int64 num_accepted_neighbors = 4;
    // Time spent in the operator.
    double duration_seconds = 5;
  }
  // Statistics for each operator called during the search.
  repeated LocalSearchOperatorStatistics local_search_operator_statistics = 1;
  // Statistics on local search filters called during the search.
  message LocalSearchFilterStatistics {
    // Name of the filter.
    string local_search_filter = 1;
    // Number of times the filter was called.
    int64 num_calls = 2;
    // Number of times the filter rejected a neighbor.
    int64 num_rejects = 3;
    // Time spent in the filter.
    double duration_seconds = 4;
  }
  // Statistics for each filter called during the search.
  repeated LocalSearchFilterStatistics local_search_filter_statistics = 2;
  // Total number of (filtered/accepted) neighbors created during the search.
  int64 total_num_neighbors = 3;
  int64 total_num_filtered_neighbors = 4;
  int64 total_num_accepted_neighbors = 5;
}

// Statistics on the search in the constraint solver.
message ConstraintSolverStatistics {
  // Number of branches explored.
  int64 num_branches = 1;
  // Number of failures/backtracks.
  int64 num_failures = 2;
  // Number of solutions found.
  int64 num_solutions = 3;
  // Memory usage of the solver.
  int64 bytes_used = 4;
  // Total time spent in the solver.
  double duration_seconds = 5;
}

// Search statistics.
message SearchStatistics {
  // Local search statistics.
  LocalSearchStatistics local_search_statistics = 1;
  // Constraint solver statistics.
  ConstraintSolverStatistics constraint_solver_statistics = 2;
}