From owner-freebsd-current@freebsd.org Wed Nov 20 17:39:00 2019 Return-Path: Delivered-To: freebsd-current@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 406011BD429 for ; Wed, 20 Nov 2019 17:39:00 +0000 (UTC) (envelope-from fbsd@www.zefox.net) Received: from www.zefox.net (www.zefox.net [50.1.20.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "www.zefox.org", Issuer "www.zefox.org" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 47J90f4Xthz46wF for ; Wed, 20 Nov 2019 17:38:58 +0000 (UTC) (envelope-from fbsd@www.zefox.net) Received: from www.zefox.net (localhost [127.0.0.1]) by www.zefox.net (8.15.2/8.15.2) with ESMTPS id xAKHcrFT000373 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 20 Nov 2019 09:38:54 -0800 (PST) (envelope-from fbsd@www.zefox.net) Received: (from fbsd@localhost) by www.zefox.net (8.15.2/8.15.2/Submit) id xAKHcr7n000372; Wed, 20 Nov 2019 09:38:53 -0800 (PST) (envelope-from fbsd) Date: Wed, 20 Nov 2019 09:38:53 -0800 From: bob prohaska To: freebsd-current@freebsd.org Cc: bob prohaska Subject: Reverting -current by date. Message-ID: <20191120173853.GB311@www.zefox.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) X-Rspamd-Queue-Id: 47J90f4Xthz46wF X-Spamd-Bar: / Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=none (mx1.freebsd.org: domain of fbsd@www.zefox.net has no SPF policy when checking 50.1.20.27) smtp.mailfrom=fbsd@www.zefox.net X-Spamd-Result: default: False [0.79 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.65)[-0.646,0]; WWW_DOT_DOMAIN(0.50)[]; RCVD_TLS_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; IP_SCORE(0.07)[ip: (0.31), ipnet: 50.1.16.0/20(0.16), asn: 7065(-0.04), country: US(-0.05)]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[zefox.net]; AUTH_NA(1.00)[]; NEURAL_HAM_LONG(-0.54)[-0.541,0]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; R_SPF_NA(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:7065, ipnet:50.1.16.0/20, country:US]; MID_RHS_MATCH_FROM(0.00)[]; MID_RHS_WWW(0.50)[]; RCVD_COUNT_TWO(0.00)[2] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Nov 2019 17:39:00 -0000 >From time to time it would be handy to revert freebsd-current to an older, well-behaved revision. Is there a mechanism for identifying revision numbers that will at least compile and boot, by date? In my case buildworld seems to be markedly slower than, say, six months ago. Maybe it's hardware, maybe something else. Is there a way to pick a revision number to revert to, that's better than merely guessing? Thanks for reading, bob prohaska