Russ Cox 1af960802a crypto/rc4: faster amd64, 386 implementations ... -- amd64 -- On a MacBookPro10,2 (Core i5): benchmark old ns/op new ns/op delta BenchmarkRC4_128 470 421 -10.43% BenchmarkRC4_1K 3123 3275 +4.87% BenchmarkRC4_8K 26351 25866 -1.84% benchmark old MB/s new MB/s speedup BenchmarkRC4_128 272.22 303.40 1.11x BenchmarkRC4_1K 327.80 312.58 0.95x BenchmarkRC4_8K 307.24 313.00 1.02x For comparison, on the same machine, openssl 0.9.8r reports its rc4 speed as somewhat under 350 MB/s for both 1K and 8K. The Core i5 performance can be boosted another 20%, but only by making the Xeon performance significantly slower. On an Intel Xeon E5520: benchmark old ns/op new ns/op delta BenchmarkRC4_128 774 417 -46.12% BenchmarkRC4_1K 6121 3200 -47.72% BenchmarkRC4_8K 48394 25151 -48.03% benchmark old MB/s new MB/s speedup BenchmarkRC4_128 165.18 306.84 1.86x BenchmarkRC4_1K 167.28 319.92 1.91x BenchmarkRC4_8K 167.29 321.89 1.92x For comparison, on the same machine, openssl 1.0.1 (which uses a different implementation than 0.9.8r) reports its rc4 speed as 587 MB/s for 1K and 601 MB/s for 8K. It is using SIMD instructions to do more in parallel. So there's still some improvement to be had, but even so, this is almost 2x faster than what it replaced. -- 386 -- On a MacBookPro10,2 (Core i5): benchmark old ns/op new ns/op delta BenchmarkRC4_128 3491 421 -87.94% BenchmarkRC4_1K 28063 3205 -88.58% BenchmarkRC4_8K 220392 25228 -88.55% benchmark old MB/s new MB/s speedup BenchmarkRC4_128 36.66 303.81 8.29x BenchmarkRC4_1K 36.49 319.42 8.75x BenchmarkRC4_8K 36.73 320.90 8.74x On an Intel Xeon E5520: benchmark old ns/op new ns/op delta BenchmarkRC4_128 2268 524 -76.90% BenchmarkRC4_1K 18161 4137 -77.22% BenchmarkRC4_8K 142396 32350 -77.28% benchmark old MB/s new MB/s speedup BenchmarkRC4_128 56.42 244.13 4.33x BenchmarkRC4_1K 56.38 247.46 4.39x BenchmarkRC4_8K 56.86 250.26 4.40x R=agl CC=golang-dev https://golang.org/cl/7547050		2013-03-21 11:25:09 -04:00
..
aes	crypto/aes: speed up using AES-NI on amd64	2012-09-27 01:54:10 +08:00
cipher	crypto/cipher: avoid out of bounds error in CryptBlocks	2013-01-30 12:45:13 -08:00
des	crypto/des: add an example to demonstrate EDE2 operation.	2012-12-22 10:50:11 -05:00
dsa	all: remove now-unnecessary unreachable panics	2013-03-11 14:16:55 -07:00
ecdsa	crypto/elliptic: explicitly handle P+P, ∞+P and P+∞	2012-08-03 15:42:14 -04:00
elliptic	crypto/elliptic: explicitly handle P+P, ∞+P and P+∞	2012-08-03 15:42:14 -04:00
hmac	crypto/hmac: add Equal function.	2012-10-11 15:28:02 -04:00
md5	src: use internal tests if possible	2013-02-19 10:02:01 -05:00
rand	crypto/rsa: ensure that RSA keys use the full number of bits.	2012-12-28 19:11:37 -05:00
rc4	crypto/rc4: faster amd64, 386 implementations	2013-03-21 11:25:09 -04:00
rsa	crypto/rsa: fix infinite loop in GenerateMultiPrimeKey for large nprimes	2013-02-24 17:19:09 +01:00
sha1	src: use internal tests if possible	2013-02-19 10:02:01 -05:00
sha256	crypto: use better hash benchmarks	2012-11-01 16:21:18 -04:00
sha512	crypto: use better hash benchmarks	2012-11-01 16:21:18 -04:00
subtle	build: remove Make.pkg, Make.tool	2012-01-30 23:43:46 -05:00
tls	crypto/tls: use method values	2013-03-20 23:53:38 -04:00
x509	all: remove now-unnecessary unreachable panics	2013-03-11 14:16:55 -07:00
crypto.go	crypto/...: changes to address some of bug 2841.	2012-02-03 15:08:53 -05:00