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 CC24F18D8D for ; Fri, 13 Nov 2015 16:50:33 +0000 (UTC) Received: (qmail 62384 invoked by uid 500); 13 Nov 2015 16:50:29 -0000 Delivered-To: apmail-lucene-solr-user-archive@lucene.apache.org Received: (qmail 62315 invoked by uid 500); 13 Nov 2015 16:50:29 -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 62300 invoked by uid 99); 13 Nov 2015 16:50:29 -0000 Received: from Unknown (HELO spamd2-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 13 Nov 2015 16:50:29 +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 EE00F1A2526 for ; Fri, 13 Nov 2015 16:50:28 +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=[HTML_MESSAGE=3, KAM_LAZY_DOMAIN_SECURITY=1, T_RP_MATCHES_RCVD=-0.01, URIBL_BLOCKED=0.001] autolearn=disabled Received: from mx1-us-west.apache.org ([10.40.0.8]) by localhost (spamd2-us-west.apache.org [10.40.0.9]) (amavisd-new, port 10024) with ESMTP id dC3XIIjz8OH8 for ; Fri, 13 Nov 2015 16:50:15 +0000 (UTC) Received: from wunderwood.org (wunderwood.org [192.220.101.25]) by mx1-us-west.apache.org (ASF Mail Server at mx1-us-west.apache.org) with ESMTP id CE5D720270 for ; Fri, 13 Nov 2015 16:50:14 +0000 (UTC) Received: (qmail 86111 invoked by uid 25881); 13 Nov 2015 16:50:08 -0000 Received: from unknown (HELO [192.168.1.90]) (wunder@[76.218.104.79]) (envelope-sender ) by 192.220.101.25 (qmail-ldap-1.03) with AES256-SHA encrypted SMTP for ; 13 Nov 2015 16:50:08 -0000 From: Walter Underwood Content-Type: multipart/alternative; boundary="Apple-Mail=_98679888-C02F-44FF-B759-8C83BEBF3304" Message-Id: Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2104\)) Subject: Re: Best way to track cumulative GC pauses in Solr Date: Fri, 13 Nov 2015 08:50:07 -0800 References: <564610AF.3010101@elyograg.org> To: solr-user@lucene.apache.org In-Reply-To: <564610AF.3010101@elyograg.org> X-Mailer: Apple Mail (2.2104) --Apple-Mail=_98679888-C02F-44FF-B759-8C83BEBF3304 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Also, what GC settings are you using? We may be able to make some = suggestions. Cumulative GC pauses aren=E2=80=99t very interesting to me. I=E2=80=99m = more interested in the longest ones, 90th percentile, 95th, etc. wunder Walter Underwood wunder@wunderwood.org http://observer.wunderwood.org/ (my blog) > On Nov 13, 2015, at 8:32 AM, Shawn Heisey wrote: >=20 > On 11/13/2015 8:00 AM, Tom Evans wrote: >> We have some issues with our Solr servers spending too much time >> paused doing GC. =46rom turning on gc debug, and extracting numbers = from >> the GC log, we're getting an idea of just how much of a problem. >=20 > Try loading your gc log into gcviewer. >=20 > https://github.com/chewiebug/GCViewer/releases >=20 > Here's a screenshot of this in action with a gc log from Solr loaded: >=20 > = https://www.dropbox.com/s/orwt0fcmii5691l/solr-gc-gcviewer-1.35-snapshot.p= ng?dl=3D0 >=20 > This screenshot is from a snapshot build including a feature request > that I made: >=20 > https://github.com/chewiebug/GCViewer/issues/139 >=20 > If you use the 1.34.1 version, you will not see some of the numbers > shown in my screenshot, but the info you asked for, accumulated GC > pauses, IS included in that version. >=20 > Thanks, > Shawn >=20 --Apple-Mail=_98679888-C02F-44FF-B759-8C83BEBF3304--