Disable Java JIT for a specific method of code segment

I am experiencing the following problem. In a simplest way put I have a servlet and a java class in my web app. Now the java class iterates over the list applying some logic to each element. I also keep a counter to keep track of handled elements. I propagate the counter value to another class that servlet has access to via a setter. From my servlet I do AJAX calls to retrieve the number of handled element and show a progress bar.

int counter = 0;
...
for(SecurityForWorkflow securityForWorkflow : newSecuritiesForWorkflow) {
    ...
    WorkflowManager.getInstance().setProcessedSecurities(counter);
    counter++;
    ...
}

The problem is that the progress bar is not smooth, it may go from 1 to 56 to 100. My guess is that JIT somehow optimizes the flow by seeing that no one accesses(gets) the counter and moves the increment out of the loop. I came to this conclusion since When debugging the loop everything goes smooth(I assume JIT cant change the flow when debugging) but when I run it and output the values into a log file with timestamps, the counter increments from 0 to the overall value instantaneously/simultaneously even thou the loop runs for 20 second(170 iterations case).

My question is whether it is possible to disable JIT optimizations for a code segment(e.g. via annotations, but googling suggests that it is not) or maybe enforce non-optimization via a language construct/trick(i tried declaring the variable static, volatile, putting the loop in a synchronized block, calling the setter within a newly spawned thread every time, putting the setter in the finally block of a try-catch and some more I cant remember now and works if I put a Thread.sleep(1000) in the loop).

UPDATE: Here is the code of the loop

Also I updated the WorkflowManager.getInstance().setProcessedSecurities(counter); with WorkflowManager.getInstance().incProcessedSecurities(); bit the result is the same

for(SecurityForWorkflow securityForWorkflow : newSecuritiesForWorkflow) {
        ManualInteractionEntity manualInteractionEntity = null;
        BondEntityStatus createdBond = null;
        LegEntity createdLeg = null;
        isin = securityForWorkflow.getIsin();
        try {
          automatedSecurityBuildingStatus = securityBuilder.createBondEntity(
              isin, businessDay);
          if(automatedSecurityBuildingStatus.getBondEntityStatus()
              .getAssetType() != null
              && automatedSecurityBuildingStatus.getBondEntityStatus()
              .getEcbStatus() != null) {
            createdBond = automatedSecurityBuildingStatus.getBondEntityStatus();
          }
          else {
            removeFromSecuritiesForWorkflow.add(securityForWorkflow);
          }
        } catch(Exception e) {
          NabsLogger.getInstance().log(Level.WARNING, String.format("Exception"
              + " when creating security with isin: %s", isin), e);
          continue;
        }finally{
          WorkflowManager.getInstance().incProcessedSecurities();
        }
        try {
          createdLeg = createdBond.getLegEntities().get(0);
        } catch (Exception e) {
          createdLeg = createdBond.getLegEntityStatus();
        }

        if (createdBond.getSetupStatus().equals(
            Constants.MANUAL_INTERACTION_NEEDED)) {
          manualInteractionEntity = new ManualInteractionEntity();
          securityForWorkflow.addStatus(
              SecurityForWorkflow.STATUS_MANUAL_INTERACTION_NEEDED);
          manualInteractionEntity.setId(createdBond.getId());
          manualInteractionEntity.setCreation(true);
          Set<String> manualInteractionFields = automatedSecurityBuildingStatus
              .getManualInteractionRuleResults().keySet();
          manualInteractionEntity.setManualInteractionFields(
              new ArrayList<String>(manualInteractionFields));
          manualInteractionEntities.add(manualInteractionEntity);
        } else if (createdBond.getSetupStatus().equals(
            Constants.CREATED_AUTOMATICALLY)) {
          securityForWorkflow.addStatus(
              SecurityForWorkflow.STATUS_AUTOMATICALLY_BUILT);
        }
        PaymentDateCalculatorModel paymentDateCalculatorModel = 
            new PaymentDateCalculatorModel();
        paymentDateCalculatorModel.setAllDates(createdBond);
        PaymentProfileCalculatorModel paymentProfileCalculatorModel = 
            new PaymentProfileCalculatorModel();
        paymentProfileCalculatorModel.setAllPayments(createdBond);
        entities.add(createdBond);
        legs.add(createdLeg);
       }

Thanks.