From owner-freebsd-stable@freebsd.org Tue Feb 12 16:56:23 2019 Return-Path: Delivered-To: freebsd-stable@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 4514F14ECEE3 for ; Tue, 12 Feb 2019 16:56:23 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from hz.grosbein.net (hz.grosbein.net [IPv6:2a01:4f8:d12:604::2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "hz.grosbein.net", Issuer "hz.grosbein.net" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 62B826E78F; Tue, 12 Feb 2019 16:56:22 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from eg.sd.rdtc.ru (eg.sd.rdtc.ru [IPv6:2a03:3100:c:13:0:0:0:5]) by hz.grosbein.net (8.15.2/8.15.2) with ESMTPS id x1CGuD5i072183 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 12 Feb 2019 17:56:14 +0100 (CET) (envelope-from eugen@grosbein.net) X-Envelope-From: eugen@grosbein.net X-Envelope-To: markj@freebsd.org Received: from [10.58.0.4] ([10.58.0.4]) by eg.sd.rdtc.ru (8.15.2/8.15.2) with ESMTPS id x1CGuC80051802 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NOT); Tue, 12 Feb 2019 23:56:12 +0700 (+07) (envelope-from eugen@grosbein.net) Subject: Re: 11.2-STABLE kernel wired memory leak To: Mark Johnston References: <20190212163446.GA29847@raichu> <763f9373-747a-fe5b-8376-cc9bb3293219@grosbein.net> Cc: FreeBSD stable From: Eugene Grosbein Message-ID: Date: Tue, 12 Feb 2019 23:56:06 +0700 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <763f9373-747a-fe5b-8376-cc9bb3293219@grosbein.net> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=0.3 required=5.0 tests=BAYES_00,LOCAL_FROM,SPF_PASS autolearn=no autolearn_force=no version=3.4.2 X-Spam-Report: * -2.3 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * -0.0 SPF_PASS SPF: sender matches SPF record * 2.6 LOCAL_FROM From my domains X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on hz.grosbein.net X-Rspamd-Queue-Id: 62B826E78F X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; spf=permerror (mx1.freebsd.org: domain of eugen@grosbein.net uses mechanism not recognized by this client) smtp.mailfrom=eugen@grosbein.net X-Spamd-Result: default: False [-3.89 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; MX_INVALID(0.50)[cached]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[grosbein.net]; RCVD_COUNT_THREE(0.00)[3]; IP_SCORE(-1.41)[ip: (-2.39), ipnet: 2a01:4f8::/29(-2.40), asn: 24940(-2.24), country: DE(-0.01)]; TO_DN_ALL(0.00)[]; R_SPF_PERMFAIL(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; NEURAL_HAM_SHORT(-0.89)[-0.886,0]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:2a01:4f8::/29, country:DE]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Feb 2019 16:56:23 -0000 12.02.2019 23:49, Eugene Grosbein wrote: > 12.02.2019 23:34, Mark Johnston wrote: > >> I suspect that the "leaked" memory is simply being used to cache UMA >> items. Note that the values in the FREE column of vmstat -z output are >> quite large. The cached items are reclaimed only when the page daemon >> wakes up to reclaim memory; if there are no memory shortages, large >> amounts of memory may accumulate in UMA caches. In this case, the sum >> of the product of columns 2 and 5 gives a total of roughly 4GB cached. > > Forgot to note, that before I got system to single user mode, there was heavy swap usage (over 3.5GB) > and heavy page-in/page-out, 10-20 megabytes per second and system was crawling slow due to pageing. There was significant memory shortage due to Firefox having over 5GB RSS plus other processes like Xorg, parts of xfce4 etc. Still, over 4GB of Wired memory.