Return-Path: X-Original-To: apmail-lucene-solr-user-archive@minotaur.apache.org Delivered-To: apmail-lucene-solr-user-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 241EC18381 for ; Wed, 5 Aug 2015 10:13:29 +0000 (UTC) Received: (qmail 90020 invoked by uid 500); 5 Aug 2015 10:13:24 -0000 Delivered-To: apmail-lucene-solr-user-archive@lucene.apache.org Received: (qmail 89943 invoked by uid 500); 5 Aug 2015 10:13:24 -0000 Mailing-List: contact solr-user-help@lucene.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: solr-user@lucene.apache.org Delivered-To: mailing list solr-user@lucene.apache.org Received: (qmail 89932 invoked by uid 99); 5 Aug 2015 10:13:24 -0000 Received: from Unknown (HELO spamd2-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 05 Aug 2015 10:13:24 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd2-us-west.apache.org (ASF Mail Server at spamd2-us-west.apache.org) with ESMTP id 2A1E41A97D0 for ; Wed, 5 Aug 2015 10:13:24 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd2-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: 3.991 X-Spam-Level: *** X-Spam-Status: No, score=3.991 tagged_above=-999 required=6.31 tests=[KAM_LAZY_DOMAIN_SECURITY=1, KAM_TIME=3, MIME_QP_LONG_LINE=0.001, T_RP_MATCHES_RCVD=-0.01] autolearn=disabled Received: from mx1-us-east.apache.org ([10.40.0.8]) by localhost (spamd2-us-west.apache.org [10.40.0.9]) (amavisd-new, port 10024) with ESMTP id WKx87mqoz-qx for ; Wed, 5 Aug 2015 10:13:23 +0000 (UTC) Received: from mail.openindex.io (mail.openindex.io [178.21.113.82]) by mx1-us-east.apache.org (ASF Mail Server at mx1-us-east.apache.org) with ESMTP id 60989428DF for ; Wed, 5 Aug 2015 10:13:23 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mail.openindex.io (Postfix) with ESMTP id 00E2C38200C for ; Wed, 5 Aug 2015 10:13:17 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at mail.openindex.io Received: from mail.openindex.io ([127.0.0.1]) by localhost (mail.openindex.io [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id HPSYRPvaMmMi for ; Wed, 5 Aug 2015 10:13:01 +0000 (UTC) Received: from mail.openindex.io (localhost [127.0.0.1]) by mail.openindex.io (Postfix) with ESMTP id D100F38200A for ; Wed, 5 Aug 2015 10:13:01 +0000 (UTC) Subject: High CPU DistributedQueue and OverseerAutoReplicaFailoverThread From: =?utf-8?Q?Markus_Jelsma?= To: =?utf-8?Q?solr-user?= Date: Wed, 5 Aug 2015 10:13:01 +0000 Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Priority: 3 (Normal) X-Mailer: Zarafa 7.1.10-44973 Message-Id: Hello=C2=A0 - we have a single Solr 5.2.1 node that (for now) contains four single shard collections. Only two collections actually contain data and are queried. The machine has some unusual latency that led me to sample the CPU time with VisualVM. On that node we see that DistributedQueue$LatchWachter.await() and OverseerAutoReplicaFailoverThread() claiming a lot of CPU time, DistributedQueue takes the most of it. I have set logging to DEBUG but no Zookeeper logging is printed, the connections are stable and updates rarely come in.=20 Is it because the node runs the overseer=3F If so, how can i prevent it from taking quite a lot of CPU time on a node with four collections where no state changes occur=3F Any other thoughts=3F Markus