From owner-freebsd-current@freebsd.org Tue Mar 6 16:41:30 2018 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 11A68F4137C for ; Tue, 6 Mar 2018 16:41:30 +0000 (UTC) (envelope-from freebsd-rwg@pdx.rh.CN85.dnsmgr.net) Received: from pdx.rh.CN85.dnsmgr.net (br1.CN84in.dnsmgr.net [69.59.192.140]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 8B3AD7F273 for ; Tue, 6 Mar 2018 16:41:28 +0000 (UTC) (envelope-from freebsd-rwg@pdx.rh.CN85.dnsmgr.net) Received: from pdx.rh.CN85.dnsmgr.net (localhost [127.0.0.1]) by pdx.rh.CN85.dnsmgr.net (8.13.3/8.13.3) with ESMTP id w26GeAdB049743; Tue, 6 Mar 2018 08:40:10 -0800 (PST) (envelope-from freebsd-rwg@pdx.rh.CN85.dnsmgr.net) Received: (from freebsd-rwg@localhost) by pdx.rh.CN85.dnsmgr.net (8.13.3/8.13.3/Submit) id w26GeA4g049742; Tue, 6 Mar 2018 08:40:10 -0800 (PST) (envelope-from freebsd-rwg) From: "Rodney W. Grimes" Message-Id: <201803061640.w26GeA4g049742@pdx.rh.CN85.dnsmgr.net> Subject: Re: Strange ARC/Swap/CPU on yesterday's -CURRENT In-Reply-To: To: =?ISO-8859-1?Q?Trond_Endrest=F8l?= Date: Tue, 6 Mar 2018 08:40:10 -0800 (PST) CC: FreeBSD current X-Mailer: ELM [version 2.4ME+ PL121h (25)] MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Mar 2018 16:41:30 -0000 > On Mon, 5 Mar 2018 14:39-0600, Larry Rosenman wrote: > > > Upgraded to: > > > > FreeBSD borg.lerctr.org 12.0-CURRENT FreeBSD 12.0-CURRENT #11 r330385: Sun Mar 4 12:48:52 CST 2018 root@borg.lerctr.org:/usr/obj/usr/src/amd64.amd64/sys/VT-LER amd64 > > +1200060 1200060 > > > > Yesterday, and I'm seeing really strange slowness, ARC use, and SWAP use and swapping. > > > > See http://www.lerctr.org/~ler/FreeBSD/Swapuse.png > > I see these symptoms on stable/11. One of my servers has 32 GiB of > RAM. After a reboot all is well. ARC starts to fill up, and I still > have more than half of the memory available for user processes. > > After running the periodic jobs at night, the amount of wired memory > goes sky high. /etc/periodic/weekly/310.locate is a particular nasty > one. I would like to find out if this is the same person I have reporting this problem from another source, or if this is a confirmation of a bug I was helping someone else with. Have you been in contact with Michael Dexter about this issue, or any other forum/mailing list/etc? If not then we have at least 2 reports of this unbound wired memory growth, if so hopefully someone here can take you further in the debug than we have been able to get. > > Limiting the ARC to, say, 16 GiB, has no effect of the high amount of > wired memory. After a few more days, the kernel consumes virtually all > memory, forcing processes in and out of the swap device. Our experience as well. ... Thanks, -- Rod Grimes rgrimes@freebsd.org