From owner-freebsd-questions@freebsd.org Fri Aug 21 05:02:55 2020 Return-Path: Delivered-To: freebsd-questions@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 2CE543B3043 for ; Fri, 21 Aug 2020 05:02:55 +0000 (UTC) (envelope-from freebsd@edvax.de) Received: from mout.kundenserver.de (mout.kundenserver.de [212.227.126.135]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "mout.kundenserver.de", Issuer "TeleSec ServerPass Class 2 CA" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4BXqCJ6wzwz4RYH for ; Fri, 21 Aug 2020 05:02:52 +0000 (UTC) (envelope-from freebsd@edvax.de) Received: from r56.edvax.de ([178.12.112.48]) by mrelayeu.kundenserver.de (mreue011 [212.227.15.167]) with ESMTPA (Nemesis) id 1MXGes-1k9UTK38Uo-00YfAo; Fri, 21 Aug 2020 07:02:44 +0200 Date: Fri, 21 Aug 2020 07:02:42 +0200 From: Polytropon To: "@lbutlr" Cc: FreeBSD Subject: Re: Swapping when memory is idle?? Message-Id: <20200821070242.3597d05a.freebsd@edvax.de> In-Reply-To: References: Reply-To: Polytropon Organization: EDVAX X-Mailer: Sylpheed 3.1.1 (GTK+ 2.24.5; i386-portbld-freebsd8.2) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K1:3rwP/YtNtwwS8LeFOkIsk41Recdqyy72ieT+75eJAJMhpQM1f7d +KZNJKZ14ODHXkAqukd1xOmU/FkHMbgyWzZHRsHD0/6zi11HSBeD2eMN+6LTB8fQ0Z9h8rt njS4bxI8dMZogAEYzs/5om1d95fSvyoVj94ix43Gylu/mKTWIHqMsCcZ/8uEM+Qsv0Dkuhi xTCCvPh9ZGTfU5pPWCp5g== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:9q9ZtWr/NKQ=:+SKJWXZeJIHfsl/xaeX7xn 4mopfkVMPjqexGamx/VE7vejwBEx+75GUGSPL3fVhXG+QuZjtE9ghWLvx2sQ50kYcmj4x1B7d XQzMlKTIdy4KlOA/vWb0qae0MgLCP6n5zhUqMul0gd6fx5+eN4vHiDh8AvjOF4E+mA2p8753A obbUnsRcfSL6/mI+rUOHTuH+hQfERWNzI57J3cORMdkDL5KaZ7qI+fbnYAVaH7Jy7hdQTEJjO HvzGl186tDwOCSxBVhzhz447cQ8Rfe5D75o2B6JdWtfAfBVoEdMZp1dvFEGfiXuTtuyyvnG0c cLmfnlY4CanNNIe8YijkHQVazk6FNM27DrcATtWCvXndqVB9QMZM6jAjmnKEc0697zEcYDRKD 3zi43HZ6994wl6MfRvXHfh5E8sF3CooWvgLahfUltUpiI8KxMp9/6s/ddgFR9lqeFzpfQ2u2V tW/ub0RWPotM7sQ9Y9w4DMZF7FjQHknVkElhDcixIZdPkBr0qslpitHpFee1/8apjFf1I25Cu ps0p0ijss8LVTmLigEB4x4+jfUYQK7D3earGkudxJf/+Hxu3lYh15HQWpPsjjb0qa0aQiPzmV 96o/ymOkvqL/889ac2NW+5jKUZ1A7pQZyr0mOqTcIBhroOKpt/mJZbZTGnFE0Th2nXDD8QJjC BhvuPeWP8hurSJNXgzvuyXZwONHwB0Fj6hQjr3obd7iW+WEPl0keJb2FOJsmtmxayn0F6JaXM Zc4l0oanFKkWPosMvRS2iAkjTp1xUR2YR3OykzkAp/VZTFkTIspQMwD9LZbeMiw3AYnWXI0/R YQ/FCDsU8N30032yLeWyo8F0COf5OfFAaS8M45D5fBpbT7CYGiEWszOpj3j6s8afh2ozmZx X-Rspamd-Queue-Id: 4BXqCJ6wzwz4RYH X-Spamd-Bar: +++ Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=none (mx1.freebsd.org: domain of freebsd@edvax.de has no SPF policy when checking 212.227.126.135) smtp.mailfrom=freebsd@edvax.de X-Spamd-Result: default: False [3.19 / 15.00]; HAS_REPLYTO(0.00)[freebsd@edvax.de]; RCVD_VIA_SMTP_AUTH(0.00)[]; MV_CASE(0.50)[]; HAS_ORG_HEADER(0.00)[]; TO_DN_ALL(0.00)[]; NEURAL_HAM_SHORT(-0.79)[-0.789]; RCPT_COUNT_TWO(0.00)[2]; RECEIVED_SPAMHAUS_PBL(0.00)[178.12.112.48:received]; RCVD_TLS_LAST(0.00)[]; R_DKIM_NA(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:8560, ipnet:212.227.0.0/16, country:DE]; SUBJECT_ENDS_QUESTION(1.00)[]; ARC_NA(0.00)[]; REPLYTO_EQ_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[edvax.de]; AUTH_NA(1.00)[]; NEURAL_SPAM_MEDIUM(0.58)[0.582]; TO_MATCH_ENVRCPT_SOME(0.00)[]; MID_CONTAINS_FROM(1.00)[]; RCVD_IN_DNSWL_NONE(0.00)[212.227.126.135:from]; R_SPF_NA(0.00)[no SPF record]; RWL_MAILSPIKE_POSSIBLE(0.00)[212.227.126.135:from]; RCVD_COUNT_TWO(0.00)[2]; MAILMAN_DEST(0.00)[freebsd-questions] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 21 Aug 2020 05:02:55 -0000 On Thu, 20 Aug 2020 12:40:32 -0600, @lbutlr wrote: > Once a page is in swap it will stay there until it is needed. Or until the operator deactivates and reactivates swap (using the swapoff / swapon programs), which would lead to anything still in swap being "synced" with RAM as long as there is enough capacity to hold them. THis is of course a heavy interference with how the OS manages memory, and often not a good idea. ;-) -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...