[tor-dev] building from source in a 64-bit windows environment..
zackw at panix.com
Sat May 18 03:56:44 UTC 2013
On 2013-05-17 11:04 PM, Blibbet wrote:
> On the positive side, it seems like many Win32 projects get about 15%
> faster (when run on NT64 systems, removing the overhead of the Win32
Just one point of information: this is almost certainly due to the
larger register set and newer, more efficient calling conventions used
on x86-64. I would expect OS overhead (whether or not from a
"subsystem", which AIUI is a vestigial concept in modern Windows anyway)
to be more or less the same in both modes.
If I am mistaken about this -- if Windows actually does offer
substantially reduced OS overhead for 64-bit processes -- then, with my
Firefox hat on rather than my Tor hat, I would really appreciate
pointers to details.
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