[time-nuts] Linux time servers

[M. Warner Losh]

In message: <20090515142600.GG2435 at vanheusden.com>
            Folkert van Heusden <folkert at vanheusden.com> writes:
: > You might consider switching to FreeBSD for more reasons than just 
: > timing, It's much faster than Fedora and I found the new 7.1 version easy 
: 
: much faster in what respect? tested how?

The usual benchmark that's cited here is the mysql tps scaling better
than Linux.  See for example
http://people.freebsd.org/~kris/scaling/mysql.html.  The numbers in
this "paper" are a little dated (being for 7.0 and a little over a
year old), they show good scaling.  Of course, this isn't the place to
debate that in extreme detail (for example, there are other pages I
can't find right now that show newer versions of Linux, some better,
some worse as changes to the scheduler help or hurt performance).  It
is no longer the case that you can automatically assume Linux performs
better.  You have to measure things and make sure you use the system
that best matches your performance requirements.

Also, on a 7.1R system, you need to make sure that you enable tagged
queueing.  A last minute change botched it.  7.2R is out now too.

Warner