Public bug reported: Problem Description ======================== Java throws "mbind: Invalid argument" message when invoked with UseNUMA flag in certain numa topologies with non-consecutive nodes.
---uname output--- not relevant ---Additional Hardware Info--- The JVM code used to discover which numa nodes it can bind assumes that nodes are consecutive and tries to bind from 0 to numa_max_node(), i.e. 0 to the highest node number available on the system. However, at least on PPC64 that assumption is not always true. For instance, the following numa topology: available: 4 nodes (0-1,16-17) node 0 cpus: 0 8 16 24 32 node 0 size: 130706 MB node 0 free: 145 MB node 1 cpus: 40 48 56 64 72 node 1 size: 0 MB node 1 free: 0 MB node 16 cpus: 80 88 96 104 112 node 16 size: 130630 MB node 16 free: 529 MB node 17 cpus: 120 128 136 144 152 node 17 size: 0 MB node 17 free: 0 MB node distances: node 0 1 16 17 0: 10 20 40 40 1: 20 10 40 40 16: 40 40 10 20 17: 40 40 20 10 Machine Type = VM and BM Steps to Reproduce ============================= On an topology similar to the aforementioned numa topology just issue: "java -XX:+UseParallelGC -XX:+UseNUMA -version" == Comment: #1 - Gustavo Bueno Romero <grom...@br.ibm.com> - 2017-06-09 10:19:37 == Bug is already fixed upstream: https://bugs.openjdk.java.net/browse/JDK-8181462 http://hg.openjdk.java.net/jdk8u/jdk8u-dev/hotspot/rev/4a575a49e938 == Comment: #3 - Gustavo Bueno Romero <grom...@br.ibm.com> - 2017-06-09 10:22:03 == Dear Daitx, could you please apply that 8u upstream fix on the next CPU cycle (around 18 July), please? Thank you. Regards. ** Affects: openjdk-8 (Ubuntu) Importance: Undecided Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) Status: New ** Tags: architecture-ppc64le bugnameltc-155628 severity-medium targetmilestone-inin--- ** Tags added: architecture-ppc64le bugnameltc-155628 severity-medium targetmilestone-inin--- ** Changed in: ubuntu Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) ** Package changed: ubuntu => openjdk-8 (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1697348 Title: Java throws "mbind: Invalid argument" message when invoked with UseNUMA To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openjdk-8/+bug/1697348/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
