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Re: [tor-talk] Tor and AES-NI acceleration , and Tor profiling
On Tue, Nov 8, 2011 at 10:29 AM, Nick Mathewson <nickm@xxxxxxxxxxxxxx> wrote:
> Hmm. On examination it looks like there might be some uses of
> OpenSSL's AES_encrypt function left around in your profile. Try
> changing the beginning of Tor's aes.c so that the line that now says:
>
> #undef USE_OPENSSL_EVP
>
> now says
>
> #define USE_OPENSSL_EVP
>
> Does that improve matters at all?
Curious whether you had a chance to try this. From the latest
profile, your biggest timesink is _x86_64_AES_encrypt_compact. But
that's not the AESNI version. I think that using EVP there would get
the right result, if I understand how engines work correctly.
--
Nick
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