From owner-freebsd-questions@FreeBSD.ORG Fri Dec 19 15:36:22 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 75C931065673 for ; Fri, 19 Dec 2008 15:36:22 +0000 (UTC) (envelope-from freebsd@optiksecurite.com) Received: from relais.videotron.ca (relais.videotron.ca [24.201.245.36]) by mx1.freebsd.org (Postfix) with ESMTP id 4C3388FC1C for ; Fri, 19 Dec 2008 15:36:22 +0000 (UTC) (envelope-from freebsd@optiksecurite.com) MIME-version: 1.0 Content-transfer-encoding: 8BIT Content-type: text/plain; charset=ISO-8859-1; format=flowed Received: from [192.168.10.103] ([74.56.107.65]) by VL-MH-MR002.ip.videotron.ca (Sun Java(tm) System Messaging Server 6.3-4.01 (built Aug 3 2007; 32bit)) with ESMTP id <0KC400JOHRC54H80@VL-MH-MR002.ip.videotron.ca> for freebsd-questions@freebsd.org; Fri, 19 Dec 2008 10:36:05 -0500 (EST) Message-id: <494BBFCA.5060305@optiksecurite.com> Date: Fri, 19 Dec 2008 10:37:46 -0500 From: FreeBSD User-Agent: Thunderbird 2.0.0.18 (Windows/20081105) To: Jerry McAllister References: <494A693A.5050204@optiksecurite.com> <200812181028.18306.kirk@strauser.com> <20081218163632.GE5150@torus.slightlystrange.org> <494A820E.2030907@optiksecurite.com> <20081219040719.GA83557@gizmo.acns.msu.edu> In-reply-to: <20081219040719.GA83557@gizmo.acns.msu.edu> Cc: freebsd-questions@freebsd.org Subject: SOLVED: Simple swap question X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 Dec 2008 15:36:22 -0000 Jerry McAllister a écrit : > On Thu, Dec 18, 2008 at 12:02:06PM -0500, FreeBSD wrote: > > >> Daniel Bye a écrit : >> >>> On Thu, Dec 18, 2008 at 10:28:18AM -0600, Kirk Strauser wrote: >>> >>>> On Thursday 18 December 2008 09:16:10 FreeBSD wrote: >>>> >>>>> Hi everyone, >>>>> >>>>> I have a FreeBSD 7.0-Release server that started to swap after an error >>>>> in a shell script (process spawning competition ;-) ). I killed the >>>>> shell and the RAM is now OK. The problem is that the swap is still used. >>>>> How can I "reset" the swap? >>>>> >>>> You don't. The system will handle it for you, I promise. :-) >>>> >>> And very well, too. >>> >>> You can prompt it to move pages back into RAM if you start using a swapped- >>> out process again - say, for example, a quiescent word processor had been >>> swapped out, you could get it back by raising it and starting to type. >>> >>> But as Kirk said, there really is no need. It's one of the kernel's many >>> jobs, and I'm inclined to leave it get on with it! >>> >>> Dan >>> >>> >> Thanks for your answer. I'm asking here because it's been several days >> and there is still used swap for data that should never be used anymore. >> If the kernel wants to keep it, why not move it to RAM now that there is >> some free? >> > > Why bother if it isn't being currently used? > > ////jerry > > Because this server is monitored by Nagios and it emails me every hour a warning because the swap is not 100% free (I know it's pretty extreme, but I want to know if the system is swapping). I just tried swapoff -a ; swapon -a and it worked great. Thanks everyone for your answer. Martin