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  1. Core Server
  2. SERVER-21080

12-14% Performance Regression on mongo-perf misc tests (Commands.CountsIntIDRange, Commands.DistinctWithoutIndex, Commands.DistinctWithoutIndexAndQuery, Mixed.FindOneUpdateIntId-50-50)

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      Shell reproductions

      Commands.CountsIntIDRange

      var setup = function( collection ) {
                  collection.drop();
                  var docs = [];
                  for ( var i = 0; i < 4800; i++ ) {
                      docs.push( { _id : i } );
                  }
                  collection.insert(docs);
                  collection.getDB().getLastError();
 }
 use test0
 setup(db.Commands_CountsIntIDRange0)
 benchRun({"ops":[{"op":"command","ns":"test0","command":{"count":"Commands_CountsIntIDRange0","query":{"_id":{"$gt":10,"$lt":100}}},"safe":false,"w":0,"j":false,"writeCmd":true}],"seconds":30,"host":"127.0.0.1:27017","parallel":8})

      Commands.DistinctWithoutIndex

      var setup = function( collection ) {
            collection.drop();
            var docs = [];
            for ( var i = 0; i < 4800; i++ ) {
                docs.push( { x : 1 } );
                docs.push( { x : 2 } );
                docs.push( { x : 3 } );
            }
            collection.insert(docs);
            collection.getDB().getLastError();
        };
use test0
setup(db.Commands_DistinctWithoutIndex0)
benchRun({"ops":[{"op":"command","tags":["distinct","command","core"],"ns":"test0","command":{"distinct":"Commands_DistinctWithoutIndex0","key":"x"},"safe":false,"w":0,"j":false,"writeCmd":true}],"seconds":30,"host":"127.0.0.1:27017","parallel":8})

      Mixed.FindOneUpdateIntId-50-50

      var setup =  function( collection ) {
                  collection.drop();
                  var docs = [];
                  for ( var i = 0; i < 4800; i++ ) {
                      docs.push( { _id : i , x : 0 } );
                  }
                  collection.insert(docs);
                  collection.getDB().getLastError();
}
use test0
setup(db.Mixed_FindOneUpdateIntId)
benchRun({"ops":[{"op":"let","target":"x","value":{"#RAND_INT_PLUS_THREAD":[0,100]},"ns":"test0.Mixed_FindOneUpdateIntId","safe":false,"w":0,"j":false,"writeCmd":true},{"op":"findOne","query":{"_id":{"#VARIABLE":"x"}},"ns":"test0.Mixed_FindOneUpdateIntId","safe":false,"w":0,"j":false,"writeCmd":true},{"op":"update","query":{"_id":{"#VARIABLE":"x"}},"update":{"$inc":{"x":1}},"ns":"test0.Mixed_FindOneUpdateIntId","safe":false,"w":0,"j":false,"writeCmd":true}],"seconds":5,"host":"127.0.0.1:27017","parallel":8})
      Show
      Shell reproductions Commands.CountsIntIDRange var setup = function( collection ) { collection.drop(); var docs = []; for ( var i = 0; i < 4800; i++ ) { docs.push( { _id : i } ); } collection.insert(docs); collection.getDB().getLastError(); } use test0 setup(db.Commands_CountsIntIDRange0) benchRun({ "ops" :[{ "op" : "command" , "ns" : "test0" , "command" :{ "count" : "Commands_CountsIntIDRange0" , "query" :{ "_id" :{ "$gt" :10, "$lt" :100}}}, "safe" : false , "w" :0, "j" : false , "writeCmd" : true }], "seconds" :30, "host" : "127.0.0.1:27017" , "parallel" :8}) Commands.DistinctWithoutIndex var setup = function( collection ) { collection.drop(); var docs = []; for ( var i = 0; i < 4800; i++ ) { docs.push( { x : 1 } ); docs.push( { x : 2 } ); docs.push( { x : 3 } ); } collection.insert(docs); collection.getDB().getLastError(); }; use test0 setup(db.Commands_DistinctWithoutIndex0) benchRun({ "ops" :[{ "op" : "command" , "tags" :[ "distinct" , "command" , "core" ], "ns" : "test0" , "command" :{ "distinct" : "Commands_DistinctWithoutIndex0" , "key" : "x" }, "safe" : false , "w" :0, "j" : false , "writeCmd" : true }], "seconds" :30, "host" : "127.0.0.1:27017" , "parallel" :8}) Mixed.FindOneUpdateIntId-50-50 var setup = function( collection ) { collection.drop(); var docs = []; for ( var i = 0; i < 4800; i++ ) { docs.push( { _id : i , x : 0 } ); } collection.insert(docs); collection.getDB().getLastError(); } use test0 setup(db.Mixed_FindOneUpdateIntId) benchRun({ "ops" :[{ "op" : "let" , "target" : "x" , "value" :{ "#RAND_INT_PLUS_THREAD" :[0,100]}, "ns" : "test0.Mixed_FindOneUpdateIntId" , "safe" : false , "w" :0, "j" : false , "writeCmd" : true },{ "op" : "findOne" , "query" :{ "_id" :{ "#VARIABLE" : "x" }}, "ns" : "test0.Mixed_FindOneUpdateIntId" , "safe" : false , "w" :0, "j" : false , "writeCmd" : true },{ "op" : "update" , "query" :{ "_id" :{ "#VARIABLE" : "x" }}, "update" :{ "$inc" :{ "x" :1}}, "ns" : "test0.Mixed_FindOneUpdateIntId" , "safe" : false , "w" :0, "j" : false , "writeCmd" : true }], "seconds" :5, "host" : "127.0.0.1:27017" , "parallel" :8})
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      12-14% reduction in through from 3.0.6 for MMAPv1

      • Commands.DistinctWithoutIndex
      • Commands.CountsIntIDRange
      • Mixed.FindOneUpdateIntId-50-50
      • Commands.DistinctWithoutIndexAndQuery

      Smaller regression for wiredTiger.

            Assignee:
            backlog-server-query Backlog - Query Team (Inactive)
            Reporter:
            david.daly@mongodb.com David Daly (Inactive)
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            Watchers:
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              Updated:
              Resolved:
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