On 3 January 2015 at 13:56, Sebastian Urbach sebastian@urbach.org wrote:
On January 3, 2015 10:41:42 AM usprey usprey@gmail.com wrote:
Hi usprey,
Summary: The documentation is still somewhat vague on the best use of the "HardwareAccel" option.
*HardwareAccel* *0*|*1*
The docu is not exactly a high-performance howto :-)
np, would just like to elaborate this option in the manual for people not fluent in OpenSSL.
If non-zero, try to use built-in (static) crypto hardware acceleration when available. (Default: 0)
I could not find a definitive answer in the archives or in
https://gitweb.torproject.org/tor.git/log/?qt=grep&q=hardwareaccel&s... .
https://www.torservers.net/wiki/setup/server#aes-ni_crypto_acceleration claims no intervention is needed in regards of aes-ni accelaration, but I would like to add an explanation or source to this recommendation.
Question_1: If my CPU supports and have loaded aesni_intel on linux with OpenSSL is 1.0.1.j-1, should I leave HardwareAccel off or explicitly enable it?
You don't have to change anything with 1.0.1.j-1, leave the default.
Question_2: What does "*built-in (static) crypto hardware acceleration*" refer to? Dedicated hardware, CPU-support or...?
It specifically means that you have the aes_ni cpu capabilities / flag. I have seen this flag on dedicated systems and also on vps systems as well. If the cpu / bios provides the flag and all other requirements are met (as stated in the torservers.net docu) you can use that feature on any system.
k, ty, will venture into OpenSSL docs.
I would very much appreciate it if you would switch to text mail format, thanks.
k, is that the preferred default on these lists?
Thank you very much for running a relay !
Best regards
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-- Sincerely yours / Sincères salutations
Sebastian Urbach
Definition of Tor: 10% luck, 20% skill, 15% concentrated power of will, 5% pleasure, 50% pain and 100% reason to remember the name!
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