** Changed in: ubuntu-z-systems Status: Fix Committed => Fix Released
-- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1806483 Title: Ubuntu 18.04.1 - OpenSSL RSA connection rate performance degradation using ibmca engine (openssl-ibmca) Status in Ubuntu on IBM z Systems: Fix Released Status in openssl-ibmca package in Ubuntu: Fix Released Status in openssl-ibmca source package in Xenial: Invalid Status in openssl-ibmca source package in Bionic: Fix Released Status in openssl-ibmca source package in Cosmic: Fix Released Status in openssl-ibmca source package in Disco: Fix Released Bug description: [Impact] * hw accelerated crypto suffers from poor performance under certain configurations. [Test Case] ---Steps to Reproduce--- Server; openssl s_server -cert benchcert.pem -quiet -WWW -engine ibmca -accept 8050 Client: openssl s_time -key benchcert.pem -www /2k.html -time 90 -cipher AES256-SHA -new -bugs -connect 10.14.1.254:8050 -elapsed By scaling the number of processes, the issue becomes more and more visible. requires installing and configuring openssl-ibmca, on systems with hw crypto enabled on the LPAR in the HMC. [Regression Potential] * There will be a change in crypto performance, when openssl-ibmca is installed and configured to be used; hopefully for the better. [Other Info] * Original bug report: ---Problem Description--- Recent performance evaluation has shown significant degradation in the TLS connections per second rate using the OpenSSL s_time benchmark with Ubuntu 18.04.1. While doing RSA sign/verify operations, the engine would preffer doing RSA-ME instead of RSA-CRT which is significantly better in terms of performance. Baseline for this comparison are measurements executed with another distro. Both measurements have been made on LPAR native, using the CEX6A adapter. Crypto stack on the host: OpenSSL ver: 1.1.0g IBMCA ver: 1.4.1.-0 Libica ver: 3.2.1 Problem present under following condititions: 1. IBMCA ver >= 2.0.0 2. OpenSSL version >= 1.1.0 && IBMCA ver >= 1.3.1. ---uname output--- Linux m42lp01 4.15.0-29-generic #31-Ubuntu SMP Tue Jul 17 15:42:24 UTC 2018 s390x s390x s390x GNU/Linux Machine Type = Type/Model:3906-M04 LPAR ---Steps to Reproduce--- Server; openssl s_server -cert benchcert.pem -quiet -WWW -engine ibmca -accept 8050 Client: openssl s_time -key benchcert.pem -www /2k.html -time 90 -cipher AES256-SHA -new -bugs -connect 10.14.1.254:8050 -elapsed By scaling the number of processes, the issue becomes more and more visible. Userspace tool common name: openssl-ibmca The userspace tool has the following bit modes: 64 Userspace package: openssl-ibmca-1.4.1-0ubuntu1.s390x The attached patch is generated from the commit available here: https://github.com/opencryptoki/openssl-ibmca/commit/a0e23d4063bf897dd9136c491d2201de5fbba653 Generated with: git format-patch -1 a0e23d4063bf897dd9136c491d2201de5fbba653 To be applied with: patch /openssl-ibmca/src/ibmca_rsa.c ~/0001-Fix-doing-rsa-me-altough-rsa-crt-would-be-possible.patch Fix applies smoothly and shows expected performance improvement as visible on the chart. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1806483/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp