hey i am stuck with the same problem for days , time for insert increases gradually and in lower ipads it also crashes with memory problem .To insert 20k records it takes 4-5 minutes.Will background thread improve efficieny. ? Is there anyway i can optimize this. Please help out if you can.

```
  +(BOOL) addObjectToProfessionalsDBWithDict:(NSArray*)profArray{

if (!([profArray count]>0 && profArray )) {
    return NO;
}

NSManagedObjectContext *thisContext=[self getManagedObjectContext];

for (int i=0; i<[profArray count]; i++) {
  NSManagedObject *professionalDBObject = [NSEntityDescription
    insertNewObjectForEntityForName:@"ProfessionalsDB"
                                          inManagedObjectContext:thisContext];//initWithDictionary:objectDict];        NSMutableDictionary * objectDict=[profArray objectAtIndex:i];
 [professionalDBObject setValue:[objectDict valueForKey:@"Degree"] forKey:@"degree"];
[professionalDBObject setValue:[objectDict valueForKey:@"First_Name"] 
  // and 10 more  values  

     if(i%500==0){
        NSError *error;
        NSLog(@"saved rec nu %d",i);
        if (![thisContext save:&error]) {
            NSLog(@"Whoops, couldn't save: %@", [error localizedDescription]);
            return NO;
        }
        else{
            NSLog(@"data saved");

        }

         [thisContext reset];

   }

}

[prefs setInteger:numOfRecords forKey:@"numberOfRecords"];
NSError *error;

if (![thisContext save:&error]) {
    NSLog(@"Whoops, couldn't save: %@", [error localizedDescription]);
    return NO;
}

return YES;

```

}