From: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Date: Fri, 7 Jan 2011 11:14:59 +1100 > Anyway, here is a test program that does a set number (1024 * 1024) > of 4096-byte (total 4GB) encryptions with libssl and kernel crypto. > The result on my Core 2 (in a KVM VM FWIW) is: > > lenny0:~# time ./test_crypto > /dev/null > > real 0m30.340s > user 0m0.172s > sys 0m30.166s > lenny0:~# time ./test_crypto software > /dev/null > > real 0m34.555s > user 0m34.550s > sys 0m0.004s > lenny0:~# > > I'm not claiming these numbers make any sense but this is just > a ballpark figure. > > Dave, can you run this program on your N2 and see what it shows? Sure, here goes, BTW I had to change the buffer size to 8192 since vmsplice requires page aligned operation (I was getting -EINVAL otherwise): davem@maramba:~$ time ./crypto_user_test >/dev/null real 0m46.586s user 0m3.280s sys 0m43.230s davem@maramba:~$ time ./crypto_user_test software >/dev/null real 10m40.336s user 10m40.540s sys 0m0.000s davem@maramba:~$ What's that, something like a factor of 13 faster? :-) -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
