From owner-freebsd-stable@FreeBSD.ORG Sun Mar 29 09:52:05 2015 Return-Path: Delivered-To: freebsd-stable@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 8F5AF36E; Sun, 29 Mar 2015 09:52:05 +0000 (UTC) Received: from elsa.codelab.cz (elsa.codelab.cz [94.124.105.4]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 49783AA3; Sun, 29 Mar 2015 09:52:04 +0000 (UTC) Received: from elsa.codelab.cz (localhost [127.0.0.1]) by elsa.codelab.cz (Postfix) with ESMTP id AC34C2842E; Sun, 29 Mar 2015 11:52:00 +0200 (CEST) Received: from illbsd.quip.test (ip-89-177-50-74.net.upcbroadband.cz [89.177.50.74]) (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by elsa.codelab.cz (Postfix) with ESMTPSA id 7594D2842D; Sun, 29 Mar 2015 11:51:59 +0200 (CEST) Message-ID: <5517CB3F.5070004@quip.cz> Date: Sun, 29 Mar 2015 11:51:59 +0200 From: Miroslav Lachman <000.fbsd@quip.cz> User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:35.0) Gecko/20100101 Firefox/35.0 SeaMonkey/2.32 MIME-Version: 1.0 To: trasz@FreeBSD.org Subject: Re: rctl logs swapuse even if swap is empty References: <550CBCE3.6040908@quip.cz> <550F3729.5020208@quip.cz> In-Reply-To: <550F3729.5020208@quip.cz> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-stable Stable X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 29 Mar 2015 09:52:05 -0000 Hello Edward, I am trying to contact you directly, because you are the author of RCTL. Can you shed some light on this issue? I still have a problem with understanding this swapuse issue. Now I have a monitoring of all values reported by "rctl -u jail:fox" and there are values like 60GB of swapuse. It doesn't make sense to me. If this is a bug, I can send you a CSV log file, od ODS (LibreOffice Calc) with graph, or MRTG graphs of all values. Miroslav Lachman https://lists.freebsd.org/pipermail/freebsd-stable/2015-March/082019.html Miroslav Lachman wrote on 03/22/2015 22:42: > Miroslav Lachman wrote on 03/21/2015 01:35: >> I tried RCTL for the first time, so maybe it is error on my side. > > [...] > >> Both jails are small webservers with PHP + Apache. They do not use much >> memory and they really do not user any swap space. (according to top and >> swapinfo) >> >> >> # swapinfo -h >> Device 1K-blocks Used Avail Capacity >> /dev/mirror/gm0s1b 16777216 0B 16G 0% >> >> >> # rctl -hu jail:fox | grep swap >> swapuse=0 >> >> >> Processes in both jails are logged as using more than 32MB of swap: >> >> Mar 21 01:18:55 neon kernel: rctl: rule "jail:fox:swapuse:log=33554432" >> matched by pid 20783 (httpd), uid 80, jail fox >> Mar 21 01:18:55 neon kernel: rctl: rule "jail:fox:swapuse:log=33554432" >> matched by pid 20787 (httpd), uid 80, jail fox >> Mar 21 01:18:58 neon kernel: rctl: rule "jail:fox:swapuse:log=33554432" >> matched by pid 19207 (httpd), uid 80, jail fox >> Mar 21 01:18:58 neon kernel: rctl: rule "jail:fox:swapuse:log=33554432" >> matched by pid 20790 (sh), uid 0, jail fox >> Mar 21 01:18:58 neon kernel: rctl: rule "jail:fox:swapuse:log=33554432" >> matched by pid 20792 (sh), uid 0, jail fox >> Mar 21 01:18:58 neon kernel: rctl: rule >> "jail:olymp:swapuse:log=33554432" matched by pid 20793 (sh), uid 0, jail >> olymp >> Mar 21 01:18:58 neon kernel: rctl: rule >> "jail:olymp:swapuse:log=33554432" matched by pid 20795 (sh), uid 0, jail >> olymp >> >> Is it expected? I do not think so. >> Or am I doing something wrong with rctl? > > This is really strange. FOP (Java application) in jail is failing unless > rctl swapuse is set to 7GB or more. > > Does swapuse means anything completely different than what is swapinfo > or top reporting? > > The same web services with FOP is running completely fine on real server > with 2GB of physical RAM installed and less than 5GB of swap partition > (swap is empty). But it is not working in jail if RCTL is set to > swapuse:deny=4GB or memoryuse:deny=4GB. > > Can somebody explain it? > > Miroslav Lachman > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" >