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| author | Russell Branca <chewbranca@apache.org> | 2020-09-17 16:14:18 -0700 |
|---|---|---|
| committer | Russell Branca <chewbranca@apache.org> | 2020-09-22 14:56:24 -0700 |
| commit | 4a09cfa263f05f8825ef320c3a9e532a234ee5df (patch) | |
| tree | 436f193a554d6a57beabd5b5688043d3e7654e8c | |
| parent | c2c282204978ecbf7034b8f89b7260f3a3e6116e (diff) | |
| download | couchdb-3160-3.x-fix-run-queue-metric.tar.gz | |
Workaround dirty schedulers in run_queue stats3160-3.x-fix-run-queue-metric
| -rw-r--r-- | src/chttpd/src/chttpd_node.erl | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/src/chttpd/src/chttpd_node.erl b/src/chttpd/src/chttpd_node.erl index 033abd68d..6407df106 100644 --- a/src/chttpd/src/chttpd_node.erl +++ b/src/chttpd/src/chttpd_node.erl @@ -15,7 +15,8 @@ -export([ handle_node_req/1, - get_stats/0 + get_stats/0, + run_queues/0 ]). -include_lib("couch/include/couch_db.hrl"). @@ -210,10 +211,12 @@ get_stats() -> {CF, CDU} = db_pid_stats(), MessageQueues0 = [{couch_file, {CF}}, {couch_db_updater, {CDU}}], MessageQueues = MessageQueues0 ++ message_queues(registered()), + {SQ, DCQ} = run_queues(), [ {uptime, couch_app:uptime() div 1000}, {memory, {Memory}}, - {run_queue, statistics(run_queue)}, + {run_queue, SQ}, + {run_queue_dirty_cpu, DCQ}, {ets_table_count, length(ets:all())}, {context_switches, element(1, statistics(context_switches))}, {reductions, element(1, statistics(reductions))}, @@ -285,3 +288,13 @@ message_queues(Registered) -> {Type, Length} = process_info(whereis(Name), Type), {Name, Length} end, Registered). + +%% Workaround for https://bugs.erlang.org/browse/ERL-1355 +run_queues() -> + case erlang:system_info(dirty_cpu_schedulers) > 0 of + false -> + {statistics(run_queue), 0}; + true -> + [DCQ | SQs] = lists:reverse(statistics(run_queue_lengths)), + {lists:sum(SQs), DCQ} + end. |