There's lots of improvements in Solaris that make it faster than linux (eg. we completely *smoke* linux in terms of TCP/IP performance) but also a few places where linux appears much faster, esp. filesystem operations. Usually that's because linux has fairly intensive disk caching turned on by default (so despite the fact that commands that write to disk finish much quicker, often the data isn't actually written to disk ! So if you have a power outage just after one of these commands has finished, on Solaris your disk will be in a consistent state (and the , whereas on linux you're screwed...)
- it's not always about performance, reliability also comes into it. As regards "most advanced os on the planet", that may sound subjective, but I'd say that SUN's implementations of DTrace, Zones, TCP/IP stack, Service Management Facility, Fault Management Architecture and probably other stuff I'm missing out make Solaris a better OS that anything else out there at the moment. Check out the following: http://www.sun.com/software/solaris/whats_new_performance.jsp http://www.sun.com/software/solaris/benchmarks.jsp http://www.sun.com/software/whitepapers/solaris10/fs_performance.pdf http://www.computerworld.com/softwaretopics/os/story/0,10801,97680,00.html http://it.slashdot.org/comments.pl?sid=165491&threshold=3&mode=flat&commentsort=0&op=Change Cheers, Yuriy