Quoting Jussi Kivilinna <jussi.kivilinna@xxxxxxxx>:
Quoting Matt Sealey <matt@xxxxxxxxxxxxxx>:
This question is to the implementor/committer (Dave McCullough), how
exactly did you measure the benchmark and can we reproduce it on some
other ARM box?
If it's long and laborious and not so important to test the IPsec
tunnel use-case, what would be the simplest possible benchmark to see
if the C vs. assembly version is faster for a particular ARM device? I
can get hold of pretty much any Cortex-A8 or Cortex-A9 that matters, I
have access to a Chromebook for A15, and maybe an i.MX27 or i.MX35 and
a couple Marvell boards (ARMv6) if I set my mind to it... that much
testing implies we find a pretty concise benchmark though with a
fairly common kernel version we can spread around (i.MX, OMAP and the
Chromebook, I can handle, the rest I'm a little wary of bothering to
spend too much time on). I think that could cover a good swath of
not-ARMv5 use cases from lower speeds to quad core monsters.. but I
might stick to i.MX to start with..
There is 'tcrypt' module in crypto/ for quick benchmarking.
'modprobe tcrypt mode=500 sec=1' tests AES in various cipher-modes,
using different buffer sizes and outputs results to kernel log.
Actually mode=200 might be better, as mode=500 is for asynchronous
implementations and might use hardware crypto if such device/module is
available.
-Jussi
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