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09:01:26.000000000","message":"Patch Set 1: Code-Review+1\n\nNice work, I am in agreement with having a standard setting.\n\nNit: swappiness or swapiness?","accounts_in_message":[],"_revision_number":1},{"id":"9b59dde7f7751d8e2d59da57f9189bc6cd2e51e9","author":{"_account_id":7118,"name":"Ian Wienand","email":"iwienand@redhat.com","username":"iwienand"},"date":"2015-04-14 09:02:16.000000000","message":"Uploaded patch set 2.","accounts_in_message":[],"_revision_number":2},{"id":"20ffbdf1adada86f903895de2a72fbb6ef6e2efd","author":{"_account_id":6316,"name":"Anita Kuno","email":"anteaya@anteaya.info","username":"anteaya"},"date":"2015-04-14 09:03:03.000000000","message":"Patch Set 2: Code-Review+1\n\nThanks Ian.","accounts_in_message":[],"_revision_number":2},{"id":"211dea949d736bc113bef08534cb2e6af39bf446","author":{"_account_id":14428,"name":"Bharat Kumar Kobagana","email":"bharath.kobagana@gmail.com","username":"bharatkk"},"date":"2015-04-14 09:18:06.000000000","message":"Patch Set 2: Code-Review+1","accounts_in_message":[],"_revision_number":2},{"id":"617232dbe71a5bf9a92748de328b7df908e9b500","author":{"_account_id":3,"name":"Jenkins","username":"jenkins"},"date":"2015-04-14 10:12:52.000000000","message":"Patch Set 2: Verified+1\n\nBuild succeeded (check pipeline).\n\n- check-tempest-dsvm-full http://logs.openstack.org/21/173221/2/check/check-tempest-dsvm-full/1a4dac2/ : SUCCESS in 41m 35s\n- check-tempest-dsvm-postgres-full http://logs.openstack.org/21/173221/2/check/check-tempest-dsvm-postgres-full/f46eb0c/ : SUCCESS in 45m 11s\n- check-tempest-dsvm-neutron-full http://logs.openstack.org/21/173221/2/check/check-tempest-dsvm-neutron-full/4749a5c/ : SUCCESS in 58m 00s\n- check-grenade-dsvm http://logs.openstack.org/21/173221/2/check/check-grenade-dsvm/80e569b/ : SUCCESS in 44m 15s\n- gate-tempest-dsvm-large-ops http://logs.openstack.org/21/173221/2/check/gate-tempest-dsvm-large-ops/56d0d90/ : SUCCESS in 25m 25s\n- gate-tempest-dsvm-neutron-large-ops http://logs.openstack.org/21/173221/2/check/gate-tempest-dsvm-neutron-large-ops/1f36a82/ : SUCCESS in 20m 57s\n- gate-devstack-gate-unittests http://logs.openstack.org/21/173221/2/check/gate-devstack-gate-unittests/0de79ce/ : SUCCESS in 11s\n- check-devstack-dsvm-cells http://logs.openstack.org/21/173221/2/check/check-devstack-dsvm-cells/25f7ec4/ : SUCCESS in 18m 43s\n- check-dg-tempest-dsvm-full http://logs.openstack.org/21/173221/2/check/check-dg-tempest-dsvm-full/317bc55/ : SUCCESS in 51m 32s\n- check-dg-tempest-dsvm-full-reexec http://logs.openstack.org/21/173221/2/check/check-dg-tempest-dsvm-full-reexec/48315f7/ : SUCCESS in 50m 36s\n- check-dg-hooks-dsvm http://logs.openstack.org/21/173221/2/check/check-dg-hooks-dsvm/1ef315c/ : SUCCESS in 6m 50s\n- check-grenade-dsvm-partial-ncpu http://logs.openstack.org/21/173221/2/check/check-grenade-dsvm-partial-ncpu/ff48a83/ : SUCCESS in 44m 15s\n- check-neutron-dsvm-functional-nv http://logs.openstack.org/21/173221/2/check/check-neutron-dsvm-functional-nv/b9cf3c2/ : SUCCESS in 6m 52s (non-voting)\n- check-swift-dsvm-functional http://logs.openstack.org/21/173221/2/check/check-swift-dsvm-functional/041de49/ : SUCCESS in 23m 50s\n- check-tempest-dsvm-full-icehouse-nv http://logs.openstack.org/21/173221/2/check/check-tempest-dsvm-full-icehouse-nv/2a354f1/ : SUCCESS in 27m 28s (non-voting)\n- check-tempest-dsvm-neutron-icehouse-nv http://logs.openstack.org/21/173221/2/check/check-tempest-dsvm-neutron-icehouse-nv/a0da8d5/ : SUCCESS in 48m 28s (non-voting)\n- check-tempest-dsvm-postgres-full-icehouse-nv http://logs.openstack.org/21/173221/2/check/check-tempest-dsvm-postgres-full-icehouse-nv/6fd8b74/ : SUCCESS in 26m 39s (non-voting)\n- check-devstack-dsvm-cells-icehouse-nv http://logs.openstack.org/21/173221/2/check/check-devstack-dsvm-cells-icehouse-nv/aba1e90/ : SUCCESS in 13m 14s (non-voting)\n- check-tempest-dsvm-full-juno-nv http://logs.openstack.org/21/173221/2/check/check-tempest-dsvm-full-juno-nv/920f3f8/ : SUCCESS in 33m 43s (non-voting)\n- check-tempest-dsvm-neutron-full-juno-nv http://logs.openstack.org/21/173221/2/check/check-tempest-dsvm-neutron-full-juno-nv/7f1f063/ : SUCCESS in 54m 24s (non-voting)\n- check-tempest-dsvm-postgres-full-juno-nv http://logs.openstack.org/21/173221/2/check/check-tempest-dsvm-postgres-full-juno-nv/e418f89/ : SUCCESS in 42m 09s (non-voting)\n- check-tempest-dsvm-ironic-pxe_ssh http://logs.openstack.org/21/173221/2/check/check-tempest-dsvm-ironic-pxe_ssh/6b65c57/ : SUCCESS in 32m 51s\n- check-tempest-dsvm-f21 http://logs.openstack.org/21/173221/2/check/check-tempest-dsvm-f21/da11c5b/ : FAILURE in 48m 55s (non-voting)\n- check-tempest-dsvm-centos7 http://logs.openstack.org/21/173221/2/check/check-tempest-dsvm-centos7/ea90cd6/ : SUCCESS in 36m 46s (non-voting)","accounts_in_message":[],"_revision_number":2},{"id":"6b63de53f7364b78b2cdf28ede55a7202d0a6033","author":{"_account_id":5263,"name":"Jeremy Stanley","display_name":"fungi","email":"fungi@yuggoth.org","username":"fungi","status":"missing, presumed fed"},"date":"2015-04-14 23:46:12.000000000","message":"Patch Set 2: Code-Review+2","accounts_in_message":[],"_revision_number":2},{"id":"23ff496e35a9c84b940ee612473b3f11ed0525aa","author":{"_account_id":7069,"name":"Joshua Hesketh","email":"josh@nitrotech.org","username":"jhesketh"},"date":"2015-04-15 05:17:38.000000000","message":"Patch Set 2: Code-Review+2\n\nGood stuff. Not approving to get more input and the chance to baby-sit.","accounts_in_message":[],"_revision_number":2},{"id":"d3d77f45a485ff900f1650936728b78c4a7d63cd","author":{"_account_id":10796,"name":"Deepak C Shetty (deepakcs)","email":"dpkshetty@gmail.com","username":"deepakcs"},"date":"2015-04-15 05:43:42.000000000","message":"Patch Set 2: Code-Review+1\n\nDoes this mean that the centos7 image created for rax and hpcloud platforms are created using diff tools due to which swap in rax is 0 but set to 30 in hpcloud ? Just curious to understand why the exact same image isn\u0027t used in both places (which i thought was the case ?) - thanks deepak","accounts_in_message":[],"_revision_number":2},{"id":"98ed00bfe35de20406f1fc6f5d199190a5b5d334","author":{"_account_id":6786,"name":"Sergey Lukjanov","email":"me@slukjanov.name","username":"slukjanov"},"date":"2015-04-15 12:40:41.000000000","message":"Patch Set 2: Code-Review+2","accounts_in_message":[],"_revision_number":2},{"id":"cde7d0417348de7c634f7c69e0f9f8d36651885f","author":{"_account_id":2750,"name":"Sean Dague","email":"sean@dague.net","username":"sdague"},"date":"2015-04-15 13:30:58.000000000","message":"Patch Set 2: Code-Review+2 Workflow+1\n\ngood catch","accounts_in_message":[],"_revision_number":2},{"id":"c865f1341736351c9dc79e1e9b10863485fbd69f","author":{"_account_id":3,"name":"Jenkins","username":"jenkins"},"date":"2015-04-15 13:31:03.000000000","message":"Patch Set 2: -Verified\n\nStarting gate 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http://logs.openstack.org/21/173221/2/gate/gate-tempest-dsvm-neutron-large-ops/0ea0b80/ : SUCCESS in 23m 11s\n- gate-devstack-gate-unittests http://logs.openstack.org/21/173221/2/gate/gate-devstack-gate-unittests/e0dcb46/ : SUCCESS in 7s\n- gate-devstack-dsvm-cells http://logs.openstack.org/21/173221/2/gate/gate-devstack-dsvm-cells/15d0a11/ : SUCCESS in 20m 30s\n- gate-grenade-dsvm-partial-ncpu http://logs.openstack.org/21/173221/2/gate/gate-grenade-dsvm-partial-ncpu/49013d9/ : SUCCESS in 38m 49s\n- gate-swift-dsvm-functional http://logs.openstack.org/21/173221/2/gate/gate-swift-dsvm-functional/d66a484/ : SUCCESS in 21m 56s","accounts_in_message":[],"_revision_number":2},{"id":"c6049681fbf25bbacabf21cb3ba0db2ae7687fc8","author":{"_account_id":3,"name":"Jenkins","username":"jenkins"},"date":"2015-04-15 16:05:47.000000000","message":"Change has been successfully merged into the git 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https://review.opendev.org/openstack/devstack-gate refs/changes/21/173221/1"}}},"commit":{"parents":[{"commit":"0aa3857386b2ef7285afb8501b6d7f3caec41ab9","subject":"Merge \"Archive ceph logs and config\"","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/devstack-gate/commit/0aa3857386b2ef7285afb8501b6d7f3caec41ab9"}]}],"author":{"name":"Ian Wienand","email":"iwienand@redhat.com","date":"2015-04-14 08:44:35.000000000","tz":600},"committer":{"name":"Ian Wienand","email":"iwienand@redhat.com","date":"2015-04-14 08:54:50.000000000","tz":600},"subject":"Set standard \"swappiness\"","message":"Set standard \"swappiness\"\n\nOne thing that remained somewhat of mystery after recent issues with\nthe OOM killer \u0026 centos7 was why we saw the problem only on RAX and\nnot hpcloud.\n\nIn going through the final telemetry sent from a dying host [1] it is\nclear there is swap available, but it is not being used at all.\n\nCloser inspection shows that there is one crucial difference between\nHP \u0026 RAX centos7 images, and that is the swappiness levels -- which is\nset to 0 on RAX and 30 on HP [2].\n\nThere is discussion about this around the place; [3] is a good post --\nbut the upshot is that a swappiness of 0 (swap only when needed) can\nlead to certain processes triggering the OOM killer despite some swap\nbeing available.  This matches what we saw on the console, which was\nusually mysql getting itself killed (unfortunately I don\u0027t believe we\nhave any console logs gathered during the issue still available).\n\nSwap should really be a last-resort for our CI testing.  Using\ncloud-based IO as memory is not going to be performant.  This change\nproposes turning swappiness down low for all platforms after we setup\nthe swap-space; this should ensure its availability for extreme\ncircumstances but not overuse.\n\nI have related changes to enable better oversight of memory usage of\njobs in the works [4].\n\n[1] http://paste.openstack.org/show/196769/\n[2] https://etherpad.openstack.org/p/oom-in-rax-centos7-CI-job\n[3] http://www.percona.com/blog/2014/04/28/oom-relation-vm-swappiness0-new-kernel/\n[4] https://review.openstack.org/#/c/171919/\n\nChange-Id: I09974be88cc590cf9ffbd16db58c19131c9532aa\n","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/devstack-gate/commit/5b6cd44170cf3b1958222ce62c29ba81f7e936cc"}],"resolve_conflicts_web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/devstack-gate/commit/5b6cd44170cf3b1958222ce62c29ba81f7e936cc"}]},"branch":"refs/heads/master"},"ed0e70bb2da9ee19eab94d6d0bfb73640136736d":{"kind":"REWORK","_number":2,"created":"2015-04-14 09:02:16.000000000","uploader":{"_account_id":7118,"name":"Ian Wienand","email":"iwienand@redhat.com","username":"iwienand"},"ref":"refs/changes/21/173221/2","fetch":{"anonymous http":{"url":"https://review.opendev.org/openstack/devstack-gate","ref":"refs/changes/21/173221/2","commands":{"Checkout":"git fetch https://review.opendev.org/openstack/devstack-gate refs/changes/21/173221/2 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.opendev.org/openstack/devstack-gate refs/changes/21/173221/2 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.opendev.org/openstack/devstack-gate refs/changes/21/173221/2 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.opendev.org/openstack/devstack-gate refs/changes/21/173221/2"}}},"commit":{"parents":[{"commit":"0aa3857386b2ef7285afb8501b6d7f3caec41ab9","subject":"Merge \"Archive ceph logs and config\"","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/devstack-gate/commit/0aa3857386b2ef7285afb8501b6d7f3caec41ab9"}]}],"author":{"name":"Ian Wienand","email":"iwienand@redhat.com","date":"2015-04-14 08:44:35.000000000","tz":600},"committer":{"name":"Ian Wienand","email":"iwienand@redhat.com","date":"2015-04-14 09:02:03.000000000","tz":600},"subject":"Set standard \"swappiness\"","message":"Set standard \"swappiness\"\n\nOne thing that remained somewhat of mystery after recent issues with\nthe OOM killer \u0026 centos7 was why we saw the problem only on RAX and\nnot hpcloud.\n\nIn going through the final telemetry sent from a dying host [1] it is\nclear there is swap available, but it is not being used at all.\n\nCloser inspection shows that there is one crucial difference between\nHP \u0026 RAX centos7 images, and that is the swappiness levels -- which is\nset to 0 on RAX and 30 on HP [2].\n\nThere is discussion about this around the place; [3] is a good post --\nbut the upshot is that a swappiness of 0 (swap only when needed) can\nlead to certain processes triggering the OOM killer despite some swap\nbeing available.  This matches what we saw on the console, which was\nusually mysql getting itself killed (unfortunately I don\u0027t believe we\nhave any console logs gathered during the issue still available).\n\nSwap should really be a last-resort for our CI testing.  Using\ncloud-based IO as memory is not going to be performant.  This change\nproposes turning swappiness down low for all platforms after we setup\nthe swap-space; this should ensure its availability for extreme\ncircumstances but not overuse.\n\nI have related changes to enable better oversight of memory usage of\njobs in the works [4].\n\n[1] http://paste.openstack.org/show/196769/\n[2] https://etherpad.openstack.org/p/oom-in-rax-centos7-CI-job\n[3] http://www.percona.com/blog/2014/04/28/oom-relation-vm-swappiness0-new-kernel/\n[4] https://review.openstack.org/#/c/171919/\n\nChange-Id: I09974be88cc590cf9ffbd16db58c19131c9532aa\n","web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/devstack-gate/commit/ed0e70bb2da9ee19eab94d6d0bfb73640136736d"}],"resolve_conflicts_web_links":[{"name":"gitea","tooltip":"Open in GitWeb","url":"https://opendev.org/openstack/devstack-gate/commit/ed0e70bb2da9ee19eab94d6d0bfb73640136736d"}]},"branch":"refs/heads/master"}},"requirements":[],"submit_records":[],"submit_requirements":[]}