From owner-freebsd-questions@freebsd.org Thu Aug 20 07:54:01 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 EFA3F3B5335 for ; Thu, 20 Aug 2020 07:54:01 +0000 (UTC) (envelope-from odhiambo@gmail.com) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 4BXH3F5DYZz439g for ; Thu, 20 Aug 2020 07:54:01 +0000 (UTC) (envelope-from odhiambo@gmail.com) Received: by mailman.nyi.freebsd.org (Postfix) id B38B53B5334; Thu, 20 Aug 2020 07:54:01 +0000 (UTC) Delivered-To: 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 B35403B54D9 for ; Thu, 20 Aug 2020 07:54:01 +0000 (UTC) (envelope-from odhiambo@gmail.com) Received: from mail-oo1-xc33.google.com (mail-oo1-xc33.google.com [IPv6:2607:f8b0:4864:20::c33]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4BXH3D70vsz43Mf for ; Thu, 20 Aug 2020 07:54:00 +0000 (UTC) (envelope-from odhiambo@gmail.com) Received: by mail-oo1-xc33.google.com with SMTP id j16so215341ooc.7 for ; Thu, 20 Aug 2020 00:54:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=LrkTcOO21zfxKJMf4UJnSRtg9e7/clLdB4hSOmHqf50=; b=rjOs/qJXTo3ibAn9BWsJZWvMGbllfWa/SRfBvx+87TV7EBaZvRtNKAbCjof+m6I+Bt 7SCCOxZHqJFTNypOrewfZxBnMBeharQ3SqGhnAevo1lLVLwIFyBvkTuR+fpzcl1x6ARi YvcCxExgwnmh6zdlvAKeJ7ebBnIzDFAAZ+iTKV5KahrM1MJ4R7n7bVtvS1QIH5cv0cLZ c9bdvpv/gZUdbw5b+8Dykk5pDemOHBqalcGF1yPtddeoovxRaU3iklPLAjFQQadi90fQ 9i8pFBo/f3mZNQcoAuYZvEwz9sRxt8tHv2vhteJzq/82BBx7kl4JHpaY2JzM14HBgomv Ig8w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=LrkTcOO21zfxKJMf4UJnSRtg9e7/clLdB4hSOmHqf50=; b=iBcUDPeHhUddg4aKv/IQhp8CzV5Jlm8zXw8duLZQX/pUGLN/nhSuEZq5ZTlvWaGtAJ 8SxAHZ1GFIh/0H0WldBYEYlzf7tRSWeRG+IMS4gi0DFJ2lGJ92ncS5VW81mu62doMiRe bhd1ogl46pmsydYcg4EFUeXyddw2H5Vg3XzaHoUZqDzpDKUX5d9VWPRIAQ8VdeUU4J3w si5ouavYhUiiHleLXK4VsTEzkY8z27so9q9nnl7S0laT2l6jpsQ2OFXrfHRu6x3uLi45 Burr4FlLG0uDgBkT5xNpCV4UVG+OYN962VX3FsCyZAFGiDEybzaNZw36pxWJHiybLk69 xYEg== X-Gm-Message-State: AOAM532S9H7m4aMd1Wp3yxTYiQ+GxErShGOKvOIeOIld87BLZ1pa62kd VLAQ+0ANk61qht47IJLXkAseYmsic+xcG5jWAh9bjo5SZQl5gA== X-Google-Smtp-Source: ABdhPJwOX+NqTmYGN8Q6W1R7/qtJwO2aCaISuo7ZxUIlsXLdlDfJzKHr5B4oj0mJsUup7+Ui49bo6BpKIynUcckf23o= X-Received: by 2002:a4a:982e:: with SMTP id y43mr1459611ooi.64.1597910039112; Thu, 20 Aug 2020 00:53:59 -0700 (PDT) MIME-Version: 1.0 From: Odhiambo Washington Date: Thu, 20 Aug 2020 10:53:27 +0300 Message-ID: Subject: Swapping when memory is idle?? To: questions X-Rspamd-Queue-Id: 4BXH3D70vsz43Mf X-Spamd-Bar: / Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=rjOs/qJX; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of odhiambo@gmail.com designates 2607:f8b0:4864:20::c33 as permitted sender) smtp.mailfrom=odhiambo@gmail.com X-Spamd-Result: default: False [-0.98 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.78)[-0.780]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; RCVD_TLS_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36:c]; FREEMAIL_FROM(0.00)[gmail.com]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[questions@freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::c33:from]; NEURAL_HAM_SHORT(-0.20)[-0.200]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; SUBJECT_ENDS_QUESTION(1.00)[]; MAILMAN_DEST(0.00)[questions]; RCVD_COUNT_TWO(0.00)[2] Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.33 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: Thu, 20 Aug 2020 07:54:02 -0000 Hola, I have a machine with 16GB RAM and not heavily used. I see from `top` some things that I do not understand well. Why would a system use swap when memory is idle? Output of top shown below: last pid: 2272; load averages: 0.07, 0.19, 0.17 up 26+12:09:26 10:49:04 155 processes: 1 running, 154 sleeping CPU: 0.1% user, 0.0% nice, 0.0% system, 0.0% interrupt, 99.9% idle Mem: 799M Active, 6262M Inact, 4964M Laundry, 2465M Wired, 1492M Buf, 1564M Free Swap: 3598M Total, 3530M Used, 67M Free, 98% Inuse -- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 "Oh, the cruft.", grep ^[^#] :-)