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Re: gnutls26 insanely slow on m68k (compared to openssl)

Andreas Schwab <schwab@linux-m68k.org> writes:

> Thorsten Glaser <tg@mirbsd.de> writes:
>> Dixi quod…
>>>‣‣‣ wget 1.14-1 (gnutls26)
>>>libgnutls26_2.12.7-4		⇒ 45s (via LD_PRELOAD)
>>>ii libgnutls26:m68k  2.12.20-2	⇒ 64s
>>>‣‣‣ wget 1.12-5 (openssl)
>>>ii libssl1.0.0:m68k  1.0.1c-4	⇒ 1s
>>>Now that is a *noticeable* difference, even, granted, when the two
>>>servers (https://www.mirbsd.org/ and https://evolvis.evolvis.org/)
>>>have both 4096-bit RSA certificates.
>> Hi again, any idea how this can be debugged?
> Perhaps gnutls is just using different (more expensive) defaults?

Can you try using gnutls-cli to see if the slowness is in the handshake
or the transfer or something else?  Most benchmarks I've done and read
indicate GnuTLS is comparable to OpenSSL in speed -- there are no
dramatic differences, and each have better performance in some areas.

The reason for a 64-time slowdown is likely a non-crypto bug somewhere.


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