text: // Ensure that multi-update and multi-remove operations yield regularly.
  (function() {
      'use strict';
  
      function countOpYields(coll, op) {
          const profileEntry = coll.getDB()
                                   .system.profile.find({ns: coll.getFullName()})
                                   .sort({$natural: -1})
                                   .limit(1)
                                   .next();
          assert.eq(profileEntry.op, op);
          return profileEntry.numYield;
      }
  
      const nDocsToInsert = 300;
      const worksPerYield = 50;
  
      // Start a mongod that will yield every 50 work cycles.
      const mongod = MongoRunner.runMongod({
          setParameter: `internalQueryExecYieldIterations=${worksPerYield}`,
          profile: 2,
      });
      assert.neq(null, mongod, 'mongod was unable to start up');
  
      const coll = mongod.getDB('test').yield_during_writes;
      coll.drop();
  
      for (let i = 0; i < nDocsToInsert; i++) {
          assert.writeOK(coll.insert({_id: i}));
      }
  
      // A multi-update doing a collection scan should yield about nDocsToInsert / worksPerYield
      // times.
      assert.writeOK(coll.update({}, {$inc: {counter: 1}}, {multi: true}));
      assert.gt(countOpYields(coll, 'update'), (nDocsToInsert / worksPerYield) - 2);
  
      // Likewise, a multi-remove should also yield approximately every worksPerYield documents.
      assert.writeOK(coll.remove({}, {multi: true}));
      assert.gt(countOpYields(coll, 'remove'), (nDocsToInsert / worksPerYield) - 2);
  
      MongoRunner.stopMongod(mongod);
  })();
  