From owner-freebsd-questions@freebsd.org Sun Jul 26 08:39:22 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 136183A15BB for ; Sun, 26 Jul 2020 08:39:22 +0000 (UTC) (envelope-from 4250.82.1d4c20005a94959.fc560945179cbe6626ae2ea64b9a0b02@email-od.com) Received: from s1-b0c6.socketlabs.email-od.com (s1-b0c6.socketlabs.email-od.com [142.0.176.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4BDxF52ytKz4H0F for ; Sun, 26 Jul 2020 08:39:21 +0000 (UTC) (envelope-from 4250.82.1d4c20005a94959.fc560945179cbe6626ae2ea64b9a0b02@email-od.com) DKIM-Signature: v=1; a=rsa-sha256; d=email-od.com;i=@email-od.com;s=dkim; c=relaxed/relaxed; q=dns/txt; t=1595752761; x=1598344761; h=content-transfer-encoding:content-type:mime-version:references:in-reply-to:message-id:subject:cc:to:from:date:x-thread-info; bh=nwgOWdsThC1VujoWWi5XpS+1M3dgoI+7I69eBBVcdfA=; b=K14+6cakGY2CCfZZaQ+Yu3NL5GSGs+25OVht6Pb1NK8Iy70F4VJeikiKHvxCS4BsATCQB7ttNRwY3XpWNNEF90u39dLROhVyMucH/GduxABlZXltIhK2bCOPYXx/xn5E0DcAj5loOe87EvLzRjktO5inORABqnFFNWS2pd5EW2g= X-Thread-Info: NDI1MC45Mi4xZDRjMjAwMDVhOTQ5NTkuZnJlZWJzZC1xdWVzdGlvbnM9ZnJlZWJzZC5vcmc= Received: from r3.us-east-2.aws.in.socketlabs.com (r3.us-east-2.aws.in.socketlabs.com [142.0.189.3]) by mxsg2.email-od.com with ESMTP(version=Tls12 cipher=Aes256 bits=256); Sun, 26 Jul 2020 04:39:12 -0400 Received: from smtp.lan.sohara.org (EMTPY [185.202.17.215]) by r3.us-east-2.aws.in.socketlabs.com with ESMTP(version=Tls12 cipher=Aes256 bits=256); Sun, 26 Jul 2020 04:39:11 -0400 Received: from [192.168.63.1] (helo=steve.lan.sohara.org) by smtp.lan.sohara.org with smtp (Exim 4.92.3 (FreeBSD)) (envelope-from ) id 1jzcBa-0006pr-4S; Sun, 26 Jul 2020 09:39:10 +0100 Date: Sun, 26 Jul 2020 09:39:09 +0100 From: Steve O'Hara-Smith To: Victor Sudakov Cc: freebsd-questions@freebsd.org Subject: Re: Ask stupid questions and you'll get a stupid answers, was: Technological advantages over Linux Message-Id: <20200726093909.ee5e14e643d31da4dad5c804@sohara.org> In-Reply-To: <20200726063256.GA22924@admin.sibptus.ru> References: <6318251A-973A-4DEC-9271-12333EB11F7B@kicp.uchicago.edu> <20200725152412.GJ92589@admin.sibptus.ru> <20200725162403.GA4721@admin.sibptus.ru> <20200725182554.deffc63058a7c9f6d343ef06@sohara.org> <04df312d-9b2b-1873-2117-79a49e089bd9@kicp.uchicago.edu> <20200726063256.GA22924@admin.sibptus.ru> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.32; amd64-portbld-freebsd12.0) X-Clacks-Overhead: "GNU Terry Pratchett" Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4BDxF52ytKz4H0F X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=email-od.com header.s=dkim header.b=K14+6cak; dmarc=none; spf=pass (mx1.freebsd.org: domain of 4250.82.1d4c20005a94959.fc560945179cbe6626ae2ea64b9a0b02@email-od.com designates 142.0.176.198 as permitted sender) smtp.mailfrom=4250.82.1d4c20005a94959.fc560945179cbe6626ae2ea64b9a0b02@email-od.com X-Spamd-Result: default: False [-2.90 / 15.00]; ARC_NA(0.00)[]; RWL_MAILSPIKE_VERYGOOD(0.00)[142.0.176.198:from]; R_DKIM_ALLOW(-0.20)[email-od.com:s=dkim]; NEURAL_HAM_MEDIUM(-1.01)[-1.014]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; MV_CASE(0.50)[]; R_SPF_ALLOW(-0.20)[+ip4:142.0.176.0/20]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[sohara.org]; NEURAL_HAM_LONG(-0.96)[-0.963]; RCVD_COUNT_THREE(0.00)[4]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[email-od.com:+]; RCPT_COUNT_TWO(0.00)[2]; RCVD_IN_DNSWL_NONE(0.00)[142.0.176.198:from]; NEURAL_HAM_SHORT(-1.23)[-1.228]; FORGED_SENDER(0.30)[steve@sohara.org,4250.82.1d4c20005a94959.fc560945179cbe6626ae2ea64b9a0b02@email-od.com]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_LAST(0.00)[]; ASN(0.00)[asn:7381, ipnet:142.0.176.0/22, country:US]; FROM_NEQ_ENVFROM(0.00)[steve@sohara.org,4250.82.1d4c20005a94959.fc560945179cbe6626ae2ea64b9a0b02@email-od.com]; MID_RHS_MATCH_FROM(0.00)[] 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: Sun, 26 Jul 2020 08:39:22 -0000 On Sun, 26 Jul 2020 13:32:56 +0700 Victor Sudakov wrote: > FreeBSD freezes, then kills some innocent random processes like > local_unbound, then it may slowly recover. Sometimes it guesses > correctly and kills the offender (firefox most often). What else would you have it do ? Kill the largest process ? Kill the last process to call malloc ? There is no good response to OOM. The OS has no way to know which processes you care about most. -- Steve O'Hara-Smith