Public bug reported: [Proposal]
* Update jtreg (universe) in 14.04 LTS from 4.1-2 to 4.2-b05-1, which is also the same version that is running on Zesty and above. [Impact] * In 14.04 LTS jtreg has no reverse runtime dependencies and a single reverse build dependency: openjdk-7 (main). * The current jtreg is based on upstream version 4.1-b02-2 and does not have the capability to run tests concurrently - this was only introduced in version 4.1-b04. * Patching b02 to b04 is not enough, as various tests that were fine before end up failing when ran concurrently. * Version 4.2-b05-1 allows the openjdk-7 tests to run using the agentvm concurrently, which speeds things up. It also prevents many additional failures compared to updating it to 4.1-b04. A few tests still fail when run concurrently, but all on the jdk testsuite which was only recently enabled, so there's no real impact - these tests will eventually be ignored or fixed. * Example of the openjdk-7 build times with jtreg 4.1-2 (agentvm, no concurrency) and jtreg 4.2-b05-1 (agentvm, concurrency), ordered by build time: arch jtreg4.1 jtreg4.2 speedup ppc64el 03:53:57 01:49:57 2.1x arm64 05:31:43 03:53:12 1.4x powerpc 19:22:16 06:44:41 2.9x amd64 23:44:55 10:06:21 2.3x i386 27:07:27 09:20:25 2.9x armhf 33:53:22 12:16:16 2.8x [Test Case] * Grab jtreg-4.2-b5-1 source * Edit its debian/control file: - change 'debhelper' build deps to version 9 `Build-Depends: debhelper (>= 9), ...` * Update the changelog, debbuild it and push to a PPA * Grab the current openjdk-7 source from the archive * Update its debian/rules file: - find the first 'JTREG_OPTIONS = ...' line - replace it by 'JTREG_OPTIONS = -agentvm -conc:auto' * Update the changelog, debbuild it and push to a PPA * (optional) Build it 3 times, get the median - powerpc, ppc64el and arm64 build times are quite stable, but amd64 and i386 can vary by a lot - re-running builds allow for a somewhat stable(-ish) result * Download buildlogs and compare the PPA build with the ones in the archive. [Regression Potential] * This package is used solely by the openjdk-7 during build for running tests, the only impact would be additional failures in those tests. * This change has been tested quite a few times by doing a lot of openjdk-7 rebuilds, no significant changes were detected on its hotspot and langtools testsuites. The jdk testsuite has more failures when ran concurrently, but it has only been enabled recently and those tests either need to be fixed or ignored. * The jtreg package depends on libjtharness-java, from the jtharness source package. Xenial and above rely on jtharness 4.6-1, while Trusty still runs 4.4.0-MR1-Rel-b19-1. By updating just jtreg against an older jtharness we might be introducing failures on the test runs, such as the new failures in the jdk testsuite. If so, instead of simply updating or ignoring those tests we would then need to SRU jtharness as well. [Other Info] * debdiff with jtreg update attached. ** Affects: jtreg (Ubuntu) Importance: Undecided Status: New ** Tags: patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1694358 Title: [SRU] update jtreg in 14.04 LTS to 4.2-b05 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/jtreg/+bug/1694358/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs