does linux i/o read/write less windows?

does linux i/o read/write less on hard drive than windows, since windows require antivirus and other security products? but what if it the is a fresh installed windows 7 and ubuntu?

 

Windows does not require anti-virus hence the comparison between vanilla systems is what you're looking for. You can do a benchmark and see, but it would require several weeks worth of data to get any meaningful result.

I believe, without any benchmarks, is that windows does more i/o because it utilizes pagefile even when there's free ram, whereas linux will normally use swap only if there's no ram left, except really badly written code.

Because of the kernel architecture differences, windows also has a higher overhead in communication between the kernel and its modules, so this could be an extra penalty, especially if related to network and disk.

But other than these general items, it depends on everything, including what kind of io scheduler you use, graphical interfaces, programs, usage model, etc. Virtually impossible to come up with one accurate figure.

Mrk