From owner-freebsd-arm@freebsd.org Thu Jun 4 02:39:49 2020 Return-Path: Delivered-To: freebsd-arm@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 CBA362FDD8F for ; Thu, 4 Jun 2020 02:39:49 +0000 (UTC) (envelope-from marklmi@yahoo.com) Received: from sonic304-25.consmr.mail.gq1.yahoo.com (sonic304-25.consmr.mail.gq1.yahoo.com [98.137.68.206]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 49cqkD5FzVz4Q4y for ; Thu, 4 Jun 2020 02:39:48 +0000 (UTC) (envelope-from marklmi@yahoo.com) X-YMail-OSG: 37fN2ggVM1lAfLZXu9MAow4uixP.0l9ssPYEZoaInJ7avnEGBFHo5itQyjQ0dxh 2lgftGtyJ7Lbzfy5DJW.v8UBSYrzt1LqBz5mEcCZjN3u0SRKFkODvBDUFOEg9PvqffFZjua7PEfc mfAG2gGHXixhGW71cNRXGuBmIm01iFXONMsosbm2gWXhX1kZX7wB8H_LrFijBEnEBYevrt7m3vQZ oXbwRj0sm.3grYbFw9jr7y1WCOvi5_2rXoSyuP9Sc6kH5wT1W_rc7D5XTKEeKMEhRzGJyoBGMCcj kys9jBCqZzD3hVEiDFzLpiarWVj3Db5hPZuEEoQABNibE9SmyNJpX9jN5.cMvfhE1KYyFKym2ZjE F5ZoY0iO2VRBfTY5ygIzwNP7ESrL5l3Q4U3Bvfl68fQDV1mBWPT6Dh4xqVXfWw3Gb1u6lSI5vr1X 7JajxZaF.0IMY04.Y8wUjCxBp906ooulH1eL02j.iMyN.wWfaYI.ZEUp4_GzMTsFie.5b5EW3Nxc a.WFDLrEa7qFJ3iMeEaeVLW6jGizito7m0zqhrQ14BjphpMZgpqYdq540umLJNE5qa54G6njGuMJ vcd5Lk.EdsewQbEfG1GLkespz9CYUpGVUzv5_Kf1BPv77DeV2HisElUcLKlFD4.AAx3ddwdgBKf8 KO.1Rq4_Bm.y.58VY4PVKo6i8WJ7ItDgm2TWdyFMJknOBN4e1Y7Yb5PU70UJJK41YOfTKU27kdQp mUq.RcNjIjxnhyXzPIZHb2sm1FjwTO.Oxcat4cyYxX2ddV_508b5zr3SrUB1rRQGnRrSrQB7o0qN ayhXZ2aa_5AKAWU9cNxhLU2X5MHPAaL_fO_1uHGoksxcRwhofzaO2ZDwjl1wXoyXDdUI9L5chaXc etMqU_JLPr5am6osYrIAdKr3oYm6qK9H3tNZkFXBsp6XHfSheKdb._Mtb5.agew1GD03Ue9LF58A mtP7Sj7Zl6ZxKXLKeprjfe4ZTpZVaH.UDtTeeOrHFV5KBWF0Sjbm0i0KrCtyy4MBkuc8Ab6JyfV3 tEwZV7lZNFcxYPdKWMyBo0bForUOnU1SJedNQFgCyjYlQ3FePCwMNn8lXt7w0UymNRCmvp19VVM2 mwTFzOFuUEbslTqM.kMVEL4CzgGaiDMOT.nsmtTazFLiOM2ydn7Q8YV8f6Akl5FHCyc7aKy._5cH 5HENYC2unPKet5qs9LcaVpn0900B9bJNadkZh8K5YU1US538_VdZXIitlYMS2Bi4H5tlA1pNkHyO JR1jVKNhGkW60RTXTRlu.XDq3l6QUj9_du31v9hFFupio5YWfX257mXdiA9Rnk_h2O0_fziTlRR_ Ela8Pn.KZhXzwa2KkVZ3iCYSLamjWNZ1gqPLCIKKEfmPWpuHEaAQSSCXgKB4CGZvmyii_sP.Ocfd c92TfF7UffUFZRVoXmOeiU1th1_w9pSLZin0nNpr3LQI0DArndA-- Received: from sonic.gate.mail.ne1.yahoo.com by sonic304.consmr.mail.gq1.yahoo.com with HTTP; Thu, 4 Jun 2020 02:39:47 +0000 Received: by smtp417.mail.gq1.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID 31dda218e6dacd03915b9d0de04e34fe; Thu, 04 Jun 2020 02:39:45 +0000 (UTC) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.80.23.2.2\)) Subject: Re: Ssh sessions running top keep disconnecting From: Mark Millard In-Reply-To: <20200604020250.GA26450@www.zefox.net> Date: Wed, 3 Jun 2020 19:39:44 -0700 Cc: freebsd-arm@freebsd.org Content-Transfer-Encoding: 7bit Message-Id: <7A0C9F2C-734E-49F8-B533-B3B487588D71@yahoo.com> References: <20200604020250.GA26450@www.zefox.net> To: bob prohaska X-Mailer: Apple Mail (2.3608.80.23.2.2) X-Rspamd-Queue-Id: 49cqkD5FzVz4Q4y X-Spamd-Bar: --- X-Spamd-Result: default: False [-3.22 / 15.00]; RCVD_TLS_LAST(0.00)[]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[yahoo.com:s=s2048]; RWL_MAILSPIKE_POSSIBLE(0.00)[98.137.68.206:from]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; FREEMAIL_FROM(0.00)[yahoo.com]; MV_CASE(0.50)[]; MIME_GOOD(-0.10)[text/plain]; R_SPF_ALLOW(-0.20)[+ptr:yahoo.com]; NEURAL_HAM_LONG(-1.02)[-1.023]; NEURAL_HAM_MEDIUM(-1.01)[-1.006]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[yahoo.com:+]; RCPT_COUNT_TWO(0.00)[2]; RCVD_IN_DNSWL_NONE(0.00)[98.137.68.206:from]; NEURAL_HAM_SHORT(-0.69)[-0.695]; DMARC_POLICY_ALLOW(-0.50)[yahoo.com,reject]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[yahoo.com]; ASN(0.00)[asn:36647, ipnet:98.137.64.0/21, country:US]; RCVD_COUNT_TWO(0.00)[2]; MID_RHS_MATCH_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[yahoo.com:dkim] X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 04 Jun 2020 02:39:49 -0000 On 2020-Jun-3, at 19:02, bob prohaska wrote: > For some reason, ssh sessions running top seem to be quitting > with > packet_write_wait: Connection to 50.1.20.25 port 22: Broken pipe > > I'm in the habit of leaving an ssh session running top going on > machines running long jobs like world or port builds. On my Pi3 > running 12.1-stable those sessions keep disconnecting. No other > ssh sessions, among the four open, seem to be affected. > > The client is a Pi3b+ running raspberry pi os. It has a dozen > or so ssh sessions open, no others are affected. > > Any ideas what might be going on? > No clue. But a possible kind of experiment . . . top keeps its ssh connection in use on a rather frequent basis, even if the mount of traffic is not large. Try having some other ssh session into the 12.1 Stable FreeBSD system that also keeps its ssh connection in use on a rather frequent basis. Does it get the same issue as the top sessions do? (Need not be at the same times but if the times were near each other for failures that might indicate something.) Of course, it may be that some of your other ssh connections to the same system already do this test --or it may be they all rarely put their connection to use (compared to top). === Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)