title: What are the negative consequences of turning debug heap off? (_NO_DEBUG_HEAP==1)
body: <p>The initial phase of my program loads in significant amounts of data into STL containers. I found that it was taking several minutes before I could reach the real meat of my program.</p>
  
  <p>After some searching, I found that I could set _NO_DEBUG_HEAP==1 within my VS2012 Configuration Properties->Debugging->Environment variable...turning off utilization of the windows debug heap. This gave me a 10x improvement in debugging speed. I have not yet found any description what what debugging functionality I lose by doing so. </p>
  
  <p>In summary: what checks were completed and what debug info was being generated by using the windows debug heap?</p>
  
  <p>Thank you.</p>