Hi, I modified the patch so it doesn't introduce a copy of the existing assembler implementation but modifies the existing one to be usable for 64 and 32 bit. Additionally I added some alignment constraints for internal functions which resulted in a noticeable speed-up. I rerun the tests on another machine, an Core i7 M620, 2.67GHz. I also took the "low-end" numbers for the AES-NI variants because I didn't want to wait for the big numbers to come every now and then any more ;) So here is the comparison of 5 consecutive tcrypt test runs for some selected algorithms in MiB/s: x86-64 (old): 1. run 2. run 3. run 4. run 5. run mean ECB, 256 bit, 8kB: 152.49 152.58 152.51 151.80 151.87 152.25 CBC. 256 bit, 8kB: 144.32 144.44 144.35 143.75 143.75 144.12 LRW, 320 bit, 8kB: 159.41 159.21 159.21 158.55 159.28 159.13 XTS, 512 bit, 8kB: 144.87 142.88 144.75 144.11 144.75 144.27 x86-64 (new): 1. run 2. run 3. run 4. run 5. run mean ECB, 256 bit, 8kB: 184.07 184.07 183.50 183.50 184.07 183.84 CBC. 256 bit, 8kB: 170.25 170.24 169.71 169.71 170.25 170.03 LRW, 320 bit, 8kB: 169.91 169.91 169.39 169.37 169.91 169.69 XTS, 512 bit, 8kB: 172.39 172.35 171.82 171.82 172.35 172.14 i586: 1. run 2. run 3. run 4. run 5. run mean ECB, 256 bit, 8kB: 125.98 126.03 126.03 125.64 126.03 125.94 CBC. 256 bit, 8kB: 118.18 118.19 117.84 117.84 118.19 118.04 LRW, 320 bit, 8kB: 128.37 128.35 127.97 127.98 128.35 128.20 XTS, 512 bit, 8kB: 118.52 118.50 118.14 118.14 118.49 118.35 x86 (AES-NI): 1. run 2. run 3. run 4. run 5. run mean ECB, 256 bit, 8kB: 187.33 187.34 187.33 186.75 186.74 187.09 CBC. 256 bit, 8kB: 171.84 171.84 171.84 171.28 171.28 171.61 LRW, 320 bit, 8kB: 168.54 168.54 168.53 168.00 168.02 168.32 XTS, 512 bit, 8kB: 166.61 166.60 166.60 166.08 166.60 166.49 Comparing the mean values gives us: x86-64: old new delta ECB, 256 bit, 8kB: 152.25 183.84 +20.7% CBC. 256 bit, 8kB: 144.12 170.03 +18.0% LRW, 320 bit, 8kB: 159.13 169.69 +6.6% XTS, 512 bit, 8kB: 144.27 172.14 +19.3% x86: i586 aes-ni delta ECB, 256 bit, 8kB: 125.94 187.09 +48.6% CBC. 256 bit, 8kB: 118.04 171.61 +45.4% LRW, 320 bit, 8kB: 128.20 168.32 +31.3% XTS, 512 bit, 8kB: 118.35 166.49 +40.7% The funny thing is that the 32 bit implementation is sometimes even faster then the 64 bit one. Nevertheless the minor optimization of aligning function entries gave the 64 bit version quite a big performance gain (up to 20%). I'll post the new version of the patch in a follow-up email. Regards, Mathias -- 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
