[geeks] FreeBSD advice please?

[Phil Stracchino]

Jonathan C. Patschke wrote:
> FreeBSD has HT turned off by default on processors that are vulnerable to
> the HT cache timing attack.  You can enable them by setting the following
> sysctl in /etc/sysctl.conf:
> 
>          machdep.hyperthreading_allowed=1

Actually, reading more on this, it's looking like (a) the attack was
never really much more than a hypothetical possibility in the first
place, (b) OpenSSL has long since been patched to close the potential
hole, and (c) for many tasks, throughput is actually better with HT off
*anyway*.


But anyway, right now, getting all possible theoretical logical
processors in action is a far secondary consideration to just getting
the FreeBSD install CD to BOOT on the thing.


-- 
  Phil Stracchino, CDK#2     DoD#299792458     ICBM: 43.5607, -71.355
  alaric at caerllewys.net   alaric at metrocast.net   phil at co.ordinate.org
         Renaissance Man, Unix ronin, Perl hacker, Free Stater
                 It's not the years, it's the mileage.