{"action":"created","comment":{"url":"https://api.github.com/repos/systemd/systemd/pulls/comments/61570525","id":61570525,"diff_hunk":"@@ -2073,6 +2113,7 @@ const sd_bus_vtable bus_manager_vtable[] = {\n         SD_BUS_METHOD(\"ResetFailed\", NULL, NULL, method_reset_failed, SD_BUS_VTABLE_UNPRIVILEGED),\n         SD_BUS_METHOD(\"ListUnits\", NULL, \"a(ssssssouso)\", method_list_units, SD_BUS_VTABLE_UNPRIVILEGED),\n         SD_BUS_METHOD(\"ListUnitsFiltered\", \"as\", \"a(ssssssouso)\", method_list_units_filtered, SD_BUS_VTABLE_UNPRIVILEGED),\n+        SD_BUS_METHOD(\"ListUnitsByStatesAndPatterns\", \"asas\", \"a(ssssssouso)\", method_list_units_filtered_by_states_and_patterns, SD_BUS_VTABLE_UNPRIVILEGED),","path":"src/core/dbus-manager.c","position":103,"original_position":103,"commit_id":"3119707c9525c27e9c5934d6cb2bf20dcee20c1e","original_commit_id":"3119707c9525c27e9c5934d6cb2bf20dcee20c1e","user":{"login":"poettering","id":2130732,"avatar_url":"https://avatars.githubusercontent.com/u/2130732?v=3","gravatar_id":"","url":"https://api.github.com/users/poettering","html_url":"https://github.com/poettering","followers_url":"https://api.github.com/users/poettering/followers","following_url":"https://api.github.com/users/poettering/following{/other_user}","gists_url":"https://api.github.com/users/poettering/gists{/gist_id}","starred_url":"https://api.github.com/users/poettering/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/poettering/subscriptions","organizations_url":"https://api.github.com/users/poettering/orgs","repos_url":"https://api.github.com/users/poettering/repos","events_url":"https://api.github.com/users/poettering/events{/privacy}","received_events_url":"https://api.github.com/users/poettering/received_events","type":"User","site_admin":false},"body":"The name sounds a bit cumbersome. Please just call this \"ListUnitsByPatterns\" or so...","created_at":"2016-04-29T12:41:20Z","updated_at":"2016-04-29T12:41:20Z","html_url":"https://github.com/systemd/systemd/pull/3142#discussion_r61570525","pull_request_url":"https://api.github.com/repos/systemd/systemd/pulls/3142","_links":{"self":{"href":"https://api.github.com/repos/systemd/systemd/pulls/comments/61570525"},"html":{"href":"https://github.com/systemd/systemd/pull/3142#discussion_r61570525"},"pull_request":{"href":"https://api.github.com/repos/systemd/systemd/pulls/3142"}}},"pull_request":{"url":"https://api.github.com/repos/systemd/systemd/pulls/3142","id":68265395,"html_url":"https://github.com/systemd/systemd/pull/3142","diff_url":"https://github.com/systemd/systemd/pull/3142.diff","patch_url":"https://github.com/systemd/systemd/pull/3142.patch","issue_url":"https://api.github.com/repos/systemd/systemd/issues/3142","number":3142,"state":"open","locked":false,"title":"core: Filter by unit name behind the D-Bus, instead on the client side","user":{"login":"kayrus","id":4047483,"avatar_url":"https://avatars.githubusercontent.com/u/4047483?v=3","gravatar_id":"","url":"https://api.github.com/users/kayrus","html_url":"https://github.com/kayrus","followers_url":"https://api.github.com/users/kayrus/followers","following_url":"https://api.github.com/users/kayrus/following{/other_user}","gists_url":"https://api.github.com/users/kayrus/gists{/gist_id}","starred_url":"https://api.github.com/users/kayrus/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kayrus/subscriptions","organizations_url":"https://api.github.com/users/kayrus/orgs","repos_url":"https://api.github.com/users/kayrus/repos","events_url":"https://api.github.com/users/kayrus/events{/privacy}","received_events_url":"https://api.github.com/users/kayrus/received_events","type":"User","site_admin":false},"body":"This PR improves systemd performance on the systems which have thousands of units. Resolves https://github.com/coreos/fleet/issues/478 and partly obsoletes https://github.com/coreos/fleet/pull/1418 (will create new patch with the new systemd dbus method soon)\r\n\r\nBenchmarking:\r\n\r\ntest unit file:\r\n\r\n```ini\r\n[Service]\r\nType=oneshot\r\nRemainAfterExit=true\r\nExecStart=/bin/true\r\n```\r\n\r\n```sh\r\ncd /etc/systemd/system\r\nfor i in {1..1000}; do cp -p hello.service hello$i.service ; done\r\ncp -p hello.service hello@.service\r\nfor i in {1..1000}; do systemctl start --no-block hello$i.service ; done\r\nfor i in {1..1000}; do systemctl start --no-block hello@$i.service ; done\r\n```\r\n\r\nTests without the patch:\r\n\r\n```sh\r\n$ time busctl call org.freedesktop.systemd1 /org/freedesktop/systemd1 org.freedesktop.systemd1.Manager ListUnitFiles > /dev/null\r\n\r\nreal    0m0.934s\r\nuser    0m0.003s\r\nsys     0m0.002s\r\n$ time systemctl list-unit-files rsyncd.service --state=disabled > /dev/null\r\n\r\nreal    0m0.919s\r\nuser    0m0.001s\r\nsys     0m0.001s\r\n$ time for i in {1..1000}; do busctl call org.freedesktop.systemd1 /org/freedesktop/systemd1 org.freedesktop.systemd1.Manager ListUnitsFiltered as 0 > /dev/null; done\r\n\r\nreal    0m28.465s\r\nuser    0m16.550s\r\nsys     0m1.015s\r\n$ time for i in {1..1000}; do systemctl list-units hello@$i.service > /dev/null ; done\r\n\r\nreal    0m14.086s\r\nuser    0m5.496s\r\nsys     0m1.118s\r\n$ time for i in {1..1000}; do systemctl list-units hello@$i.service > /dev/null ; done\r\n\r\nreal    0m13.972s\r\nuser    0m5.482s\r\nsys     0m1.014s\r\n$ time for i in {1..1000}; do systemctl list-units hello@$i.service > /dev/null ; done\r\n\r\nreal    0m14.074s\r\nuser    0m5.411s\r\nsys     0m1.140s\r\n$ time for i in {1..1000}; do systemctl list-units hello$i.service > /dev/null ; done\r\n\r\nreal    0m14.021s\r\nuser    0m5.390s\r\nsys     0m1.077s\r\n$ time for i in {1..1000}; do systemctl list-units hello$i.service > /dev/null ; done\r\n\r\nreal    0m14.124s\r\nuser    0m5.359s\r\nsys     0m1.129s\r\n$ time for i in {1..1000}; do systemctl list-units hello$i.service > /dev/null ; done\r\n\r\nreal    0m14.125s\r\nuser    0m5.554s\r\nsys     0m1.112s\r\n======================HERE=I=USE=ONLY=10====================================\r\n$ time for i in {1..10}; do systemctl list-unit-files hello$i.service > /dev/null ; done \r\n\r\nreal    0m10.095s\r\nuser    0m0.022s\r\nsys     0m0.008s\r\n$ time for i in {1..10}; do systemctl list-unit-files hello$i.service > /dev/null ; done \r\n\r\nreal    0m9.957s\r\nuser    0m0.018s\r\nsys     0m0.005s\r\n$ time for i in {1..10}; do systemctl list-unit-files hello$i.service > /dev/null ; done \r\n\r\nreal    0m9.704s\r\nuser    0m0.016s\r\nsys     0m0.010s\r\n```\r\n\r\nTests with the patch:\r\n\r\n```sh\r\n$ time busctl call org.freedesktop.systemd1 /org/freedesktop/systemd1 org.freedesktop.systemd1.Manager ListUnitFilesFiltered asas 0 2 \"hello1.service\" \"hello@1.service\" > /dev/null\r\n\r\nreal    0m0.005s\r\nuser    0m0.001s\r\nsys     0m0.001s\r\n\r\n$ time systemctl list-unit-files rsyncd.service --state=disabled > /dev/null\r\n\r\nreal    0m0.009s\r\nuser    0m0.000s\r\nsys     0m0.001s\r\n\r\n$ time for i in {1..1000}; do busctl call org.freedesktop.systemd1 /org/freedesktop/systemd1 org.freedesktop.systemd1.Manager ListUnitsFiltered asas 0 2 \"hello$i.service\" \"hello@$i.service\" > /dev/null; done\r\n\r\nreal    0m4.099s\r\nuser    0m0.602s\r\nsys     0m0.772s\r\n$ time for i in {1..1000}; do systemctl list-units hello@$i.service > /dev/null ; done\r\n\r\nreal    0m10.038s\r\nuser    0m0.597s\r\nsys     0m0.712s\r\n$ time for i in {1..1000}; do systemctl list-units hello@$i.service > /dev/null ; done\r\n\r\nreal    0m9.975s\r\nuser    0m0.579s\r\nsys     0m0.726s\r\n$ time for i in {1..1000}; do systemctl list-units hello@$i.service > /dev/null ; done\r\n\r\nreal    0m10.307s\r\nuser    0m0.623s\r\nsys     0m0.735s\r\n$ time for i in {1..1000}; do systemctl list-units hello$i.service > /dev/null ; done\r\n\r\nreal    0m9.768s\r\nuser    0m0.633s\r\nsys     0m0.671s\r\n$ time for i in {1..1000}; do systemctl list-units hello$i.service > /dev/null ; done\r\n\r\nreal    0m10.071s\r\nuser    0m0.612s\r\nsys     0m0.695s\r\n$ time for i in {1..1000}; do systemctl list-units hello$i.service > /dev/null ; done\r\n\r\nreal    0m9.976s\r\nuser    0m0.590s\r\nsys     0m0.715s\r\n======================HERE=I=USE=1000========================================\r\n$ time for i in {1..1000}; do systemctl list-unit-files hello$i.service > /dev/null ; done \r\n\r\nreal    0m11.263s\r\nuser    0m0.570s\r\nsys     0m0.732s\r\n$ time for i in {1..1000}; do systemctl list-unit-files hello$i.service > /dev/null ; done \r\n\r\nreal    0m11.329s\r\nuser    0m0.566s\r\nsys     0m0.715s\r\n$ time for i in {1..1000}; do systemctl list-unit-files hello$i.service > /dev/null ; done \r\n\r\nreal    0m11.697s\r\nuser    0m0.587s\r\nsys     0m0.757s\r\n```\r\n\r\nP.S. Not sure about the existing method modification, most probably you'll suggest to create new dbus method.\r\n\r\n```\r\n=============================================================================\r\n```\r\n\r\nP.P.S. I've also noticed performance degradation in systemd (between v225 and master branch) when compared:\r\n\r\n```sh\r\n$ time busctl call org.freedesktop.systemd1 /org/freedesktop/systemd1 org.freedesktop.systemd1.Manager ListUnitsFiltered asas 0 2 \"hello1.service\" \"hello@1.service\" > /dev/null\r\n\r\nreal    0m0.004s\r\nuser    0m0.002s\r\nsys     0m0.000s\r\n$ time systemctl -r list-units hello1.service hello@1.service > /dev/null\r\nreal    0m0.011s\r\nuser    0m0.001s\r\nsys     0m0.001s\r\n```\r\n\r\nSomething takes extra `0m0.007s` in systemd v225 had similar time comparing to `busctl call`\r\n\r\nSimilar tests as above but on systemd v225 (5 seconds in v225 vs 10 seconds in master branch):\r\n\r\n```sh\r\n$ time for i in {1..1000}; do busctl call org.freedesktop.systemd1 /org/freedesktop/systemd1 org.freedesktop.systemd1.Manager ListUnitsFiltered asas 0 1 \"hello@$i.service\" > /dev/null ; done\r\n\r\nreal    0m3.286s\r\nuser    0m0.234s\r\nsys     0m0.355s\r\n$ time for i in {1..1000}; do systemctl list-units hello$i.service > /dev/null ; done\r\n\r\nreal    0m5.506s\r\nuser    0m0.630s\r\nsys     0m0.664s\r\n```","created_at":"2016-04-28T18:12:14Z","updated_at":"2016-04-29T12:41:20Z","closed_at":null,"merged_at":null,"merge_commit_sha":"04e5fa6fe1d5b6f9d078bd6c2d23f2d7e7cd53b7","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/systemd/systemd/pulls/3142/commits","review_comments_url":"https://api.github.com/repos/systemd/systemd/pulls/3142/comments","review_comment_url":"https://api.github.com/repos/systemd/systemd/pulls/comments{/number}","comments_url":"https://api.github.com/repos/systemd/systemd/issues/3142/comments","statuses_url":"https://api.github.com/repos/systemd/systemd/statuses/3119707c9525c27e9c5934d6cb2bf20dcee20c1e","head":{"label":"endocode:kayrus/dbus_filter_units_master","ref":"kayrus/dbus_filter_units_master","sha":"3119707c9525c27e9c5934d6cb2bf20dcee20c1e","user":{"login":"endocode","id":4068543,"avatar_url":"https://avatars.githubusercontent.com/u/4068543?v=3","gravatar_id":"","url":"https://api.github.com/users/endocode","html_url":"https://github.com/endocode","followers_url":"https://api.github.com/users/endocode/followers","following_url":"https://api.github.com/users/endocode/following{/other_user}","gists_url":"https://api.github.com/users/endocode/gists{/gist_id}","starred_url":"https://api.github.com/users/endocode/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/endocode/subscriptions","organizations_url":"https://api.github.com/users/endocode/orgs","repos_url":"https://api.github.com/users/endocode/repos","events_url":"https://api.github.com/users/endocode/events{/privacy}","received_events_url":"https://api.github.com/users/endocode/received_events","type":"Organization","site_admin":false},"repo":{"id":36789448,"name":"systemd","full_name":"endocode/systemd","owner":{"login":"endocode","id":4068543,"avatar_url":"https://avatars.githubusercontent.com/u/4068543?v=3","gravatar_id":"","url":"https://api.github.com/users/endocode","html_url":"https://github.com/endocode","followers_url":"https://api.github.com/users/endocode/followers","following_url":"https://api.github.com/users/endocode/following{/other_user}","gists_url":"https://api.github.com/users/endocode/gists{/gist_id}","starred_url":"https://api.github.com/users/endocode/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/endocode/subscriptions","organizations_url":"https://api.github.com/users/endocode/orgs","repos_url":"https://api.github.com/users/endocode/repos","events_url":"https://api.github.com/users/endocode/events{/privacy}","received_events_url":"https://api.github.com/users/endocode/received_events","type":"Organization","site_admin":false},"private":false,"html_url":"https://github.com/endocode/systemd","description":"systemd 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