Still Failing: openssl/openssl#38530 (master - 9ce8e0d)

Thu Nov 12 13:40:44 UTC 2020

Build Update for openssl/openssl
-------------------------------------

Build: #38530
Status: Still Failing

Duration: 1 hr, 23 mins, and 55 secs
Commit: 9ce8e0d (master)
Author: XiaokangQian
Message: Optimize AES-XTS mode in OpenSSL for aarch64

Aes-xts mode can be optimized by interleaving cipher operation on
several blocks and loop unrolling. Interleaving needs one ideal
unrolling factor, here we adopt the same factor with aes-cbc,
which is described as below:
	If blocks number > 5, select 5 blocks as one iteration,every
	loop, decrease the blocks number by 5.
	If left blocks < 5, treat them as tail blocks.
Detailed implementation has a little adjustment for squeezing
code space.
With this way, for small size such as 16 bytes, the performance is
similar as before, but for big size such as 16k bytes, the performance
improves a lot, even reaches to 2x uplift, for some arches such as A57,
the improvement even reaches more than 2x uplift. We collect many
performance datas on different micro-archs such as thunderx2,
ampere-emag, a72, a75, a57, a53 and N1, all of which reach 0.5-2x uplift.
The following table lists the encryption performance data on aarch64,
take a72, a75, a57, a53 and N1 as examples. Performance value takes the
unit of cycles per byte, takes the format as comparision of values.
List them as below:

A72:
                            Before optimization     After optimization  Improve
evp-aes-128-xts at 16          8.899913518             5.949087263         49.60%
evp-aes-128-xts at 64          4.525512668             3.389141845         33.53%
evp-aes-128-xts at 256         3.502906908             1.633573479         114.43%
evp-aes-128-xts at 1024        3.174210419             1.155952639         174.60%
evp-aes-128-xts at 8192        3.053019303             1.028134888         196.95%
evp-aes-128-xts at 16384       3.025292462             1.02021169          196.54%
evp-aes-256-xts at 16          9.971105023             6.754233758         47.63%
evp-aes-256-xts at 64          4.931479093             3.786527393         30.24%
evp-aes-256-xts at 256         3.746788153             1.943975947         92.74%
evp-aes-256-xts at 1024        3.401743802             1.477394648         130.25%
evp-aes-256-xts at 8192        3.278769327             1.32950421          146.62%
evp-aes-256-xts at 16384       3.27093296              1.325276257         146.81%

A75:
                            Before optimization     After optimization  Improve
evp-aes-128-xts at 16          8.397965173             5.126839098         63.80%
evp-aes-128-xts at 64          4.176860631             2.59817764          60.76%
evp-aes-128-xts at 256         3.069126585             1.284561028         138.92%
evp-aes-128-xts at 1024        2.805962699             0.932754655         200.83%
evp-aes-128-xts at 8192        2.725820131             0.829820397         228.48%
evp-aes-128-xts at 16384       2.71521905              0.823251591         229.82%
evp-aes-256-xts at 16          11.24790935             7.383914448         52.33%
evp-aes-256-xts at 64          5.294128847             3.048641998         73.66%
evp-aes-256-xts at 256         3.861649617             1.570359905         145.91%
evp-aes-256-xts at 1024        3.537646797             1.200493533         194.68%
evp-aes-256-xts at 8192        3.435353012             1.085345319         216.52%
evp-aes-256-xts at 16384       3.437952563             1.097963822         213.12%

A57:
                            Before optimization     After optimization  Improve
evp-aes-128-xts at 16          10.57455446             7.165438012         47.58%
evp-aes-128-xts at 64          5.418185447             3.721241202         45.60%
evp-aes-128-xts at 256         3.855184592             1.747145379         120.66%
evp-aes-128-xts at 1024        3.477199757             1.253049735         177.50%
evp-aes-128-xts at 8192        3.36768104              1.091943159         208.41%
evp-aes-128-xts at 16384       3.360373443             1.088942789         208.59%
evp-aes-256-xts at 16          12.54559459             8.745489036         43.45%
evp-aes-256-xts at 64          6.542808937             4.326387568         51.23%
evp-aes-256-xts at 256         4.62668822              2.119908754         118.25%
evp-aes-256-xts at 1024        4.161716505             1.557335554         167.23%
evp-aes-256-xts at 8192        4.032462227             1.377749511         192.68%
evp-aes-256-xts at 16384       4.023293877             1.371558933         193.34%

A53:
                            Before optimization     After optimization  Improve
evp-aes-128-xts at 16          18.07842135             13.96980808         29.40%
evp-aes-128-xts at 64          7.933818397             6.07159276          30.70%
evp-aes-128-xts at 256         5.264604704             2.611155744         101.60%
evp-aes-128-xts at 1024        4.606660117             1.722713454         167.40%
evp-aes-128-xts at 8192        4.405160115             1.454379201         202.90%
evp-aes-128-xts at 16384       4.401592028             1.442279392         205.20%
evp-aes-256-xts at 16          20.07084054             16.00803726         25.40%
evp-aes-256-xts at 64          9.192647294             6.883876732         33.50%
evp-aes-256-xts at 256         6.336143161             3.108140452         103.90%
evp-aes-256-xts at 1024        5.62502952              2.097960651         168.10%
evp-aes-256-xts at 8192        5.412085608             1.807294191         199.50%
evp-aes-256-xts at 16384       5.403062591             1.790135764         201.80%

N1:
                            Before optimization     After optimization  Improve
evp-aes-128-xts at 16          6.48147613              4.209415473         53.98%
evp-aes-128-xts at 64          2.847744115             1.950757468         45.98%
evp-aes-128-xts at 256         2.085711968             1.061903238         96.41%
evp-aes-128-xts at 1024        1.842014669             0.798486302         130.69%
evp-aes-128-xts at 8192        1.760449052             0.713853939         146.61%
evp-aes-128-xts at 16384       1.760763546             0.707702009         148.80%
evp-aes-256-xts at 16          7.264142817             5.265970454         37.94%
evp-aes-256-xts at 64          3.251356212             2.41176323          34.81%
evp-aes-256-xts at 256         2.380488469             1.342095742         77.37%
evp-aes-256-xts at 1024        2.08853022              1.041718215         100.49%
evp-aes-256-xts at 8192        2.027432668             0.944571334         114.64%
evp-aes-256-xts at 16384       2.00740782              0.941991415         113.10%

Add more XTS test cases to cover the cipher stealing mode and cases of different
number of blocks.

CustomizedGitHooks: yes
Change-Id: I93ee31b2575e1413764e27b599af62994deb4c96

Reviewed-by: Paul Dale <paul.dale at oracle.com>
Reviewed-by: Tomas Mraz <tmraz at fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11399)

View the changeset: https://github.com/openssl/openssl/compare/c87a7f31a3db...9ce8e0d17e60

View the full build log and details: https://travis-ci.com/github/openssl/openssl/builds/200292820?utm_medium=notification&utm_source=email

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