What is Antimalware Service Executable? In fact, the Antimalware Service Executable (also known as MsMpEng.exe.) process is Windows Defender’s background service and it is always running in the background.
I'd wager they're generic vanilla device drivers that aren't set up to squeeze all the possible oomph from your nice SSD.Tip: Before proceeding, you can always backup important files on your Windows PC, as mistaken operation may cause unexpected data loss sometimes. Since your benchmarks are heavy on disk I/O, I'd cast a skeptical eye at the disk device drivers. On the other hand, some subsystems may be more mature and optimized for Windows, such as the OpenGL mentioned by a previous poster. Lastly, your Windows installation's system-level device drivers (including for the SSD) may not be as optimized for your Apple hardware as OS X is. On the other hand, Windows gives software more direct access to hardware than OS X does, which can yield a speed boost in some applications such as hardcore gaming. Windows also suffers from disk fragmentation much more than OS X does, but since you're running on an SSD that might not be as much of an issue. On the other hand, constant real-time antivirus is a necessity with Windows, so it's hard to say if it's fair to omit it when users should definitely always enable it. Try (carefully and temporarily) turning off your antivirus utilities on Windows to give what some might call a fairer test.
Scanning every file and process for bad stuff takes an astonishing amount of processing power, and then there's the antivirus update process, which can take many minutes and (in the case of my Kaspersky and Avast installations) noticeably slow down the machine while they're downloading and installing. One of OS X's is no need for 'round-the-clock antivirus activity.
If you were to install 2 identical copies of OS X you'd also see different performance.īoth platforms have their strengths. In that case, it's not Windows being slow - it's your disk. the end of the disk is half the speed of the start of the disk. The difference in speed between the outermost track (start of first partition) and the innermost track (end of last partition) is in the other of 50%. Hard drive performance slows down the further from the start of the disk you get, as the angular velocity of each track is slower towards the middle. If you're testing this on teh same hardware and are running bootcamp, then if you are using a spinning hard drive (not an SSD), windows will be installed on the slower part of the disk. This means the application will load its own version of a shared library, rather than referencing the already loaded system version.
Due to the "dll hell", windows apps typically include the specific version of a DLL they have been tested to work with, in the application directory. On reason could be that OS X is a "cleaner" platform than Windows. OpenGL performance is generally faster on Windows, for example. It depends how you measure - what software you are testing and how.