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A comment on Maybe Skip SHA-3. Parent comment

Re:Maybe Skip SHA-3 by gigatexal on Wednesday May 31, 2017 @03:57PM (#14455429)
It'd be interesting to see what SHA2-512 would do since I think modern intel CPUs prefer that size to 256. (I could be wrong though as i have no source to cite just something I remember reading.)
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Re:Maybe Skip SHA-3 by dchest on Wednesday May 31, 2017 @05:42PM (#14456165)
You're not wrong. Type this into Terminal:

     openssl speed sha512 sha256
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Re:Maybe Skip SHA-3 by gigatexal on Thursday June 01, 2017 @07:43PM (#14466061)
tl;dr sha512 outperforms sha256 as message size increases.

pastebin output for lack of decent formatting:

https://pastebin.com/zqgtTKhm

on a linode system with 2 xeon E5-2680v3 cores @ 2.5ghz and 4GB of ram on this version and config of openssl on ubuntu server 17.04:

OpenSSL 1.0.2g 1 Mar 2016 built on: reproducible build, date unspecified options:bn(64,64) rc4(16x,int) des(idx,cisc,16,int) aes(partial) blowfish(idx) compiler: cc -I. -I.. -I../include -fPIC -DOPENSSL_PIC -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -m64 -DL_ENDIAN -g -O2 -fdebug-prefix-map=/build/openssl-p_sOry/openssl-1.0.2g=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -Wl,-Bsymbolic-functions -Wl,-z,relro -Wa,--noexecstack -Wall -DMD32_REG_T=int -DOPENSSL_IA32_SSE2 -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_MONT5 -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -DMD5_ASM -DAES_ASM -DVPAES_ASM -DBSAES_ASM -DWHIRLPOOL_ASM -DGHASH_ASM -DECP_NISTZ256_ASM

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