Notes on jprof profiles (David Baron)

Notes on jprof profile of loading hiprof profile

• 15082 TOTAL
  • 7732 HandleEndToken
    • 7693 See below
  • 5074 HandleStartToken
    • 2637 SinkContext::OpenContainer
    • 665 See below
    • 462 CNavDTD::WillHandleStartTag
  • 2192 nsParserTokenize
  • 804 Other

• 8358 CloseContainersTo (reached through HandleStartToken (a little of the time) and (almost all of the time, and most of the calls to CloseContainersTo) HandleEndToken)
  • 4865 SelectorMatches
    • There's a bunch of needless string conversion going on here - the string is stored in the element and in history as one byte, but it's converted to 2-byte for transfer between the functions
    • 1965 IsValidLink (which should be cleaned up!!)
      • 580 nsString::AssignWithConversion (pointless)
    • 1923 GetLinkState
      • 375 nsCString::AssignWithConversion (pointless)
      • 295 nsCAutoString ctor and dtor (pointless)
    • 116 nsAutoString::~nsAutoString (35 for ctor)
  • 886 SinkContext::FrushText
  • 452 ViewportFrame::Reflow
  • 442 (excl kids) ContentEnumFunc