From owner-freebsd-hackers@freebsd.org Wed Feb 20 22:32:05 2019 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 0996D14DEDE4 for ; Wed, 20 Feb 2019 22:32:05 +0000 (UTC) (envelope-from jonathan@FreeBSD.org) Received: from smtp.freebsd.org (smtp.freebsd.org [96.47.72.83]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "smtp.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 6B0E871F36; Wed, 20 Feb 2019 22:32:04 +0000 (UTC) (envelope-from jonathan@FreeBSD.org) Received: from [192.168.86.191] (stjhnf0157w-142-134-222-130.dhcp-dynamic.fibreop.nl.bellaliant.net [142.134.222.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) (Authenticated sender: jonathan) by smtp.freebsd.org (Postfix) with ESMTPSA id 073D048FA; Wed, 20 Feb 2019 22:32:03 +0000 (UTC) (envelope-from jonathan@FreeBSD.org) From: "Jonathan Anderson" To: "Alex Dupre" Cc: "Colin Percival" , "Matthew Seaman" , freebsd-hackers@freebsd.org Subject: Re: Amazon AMIs Date: Wed, 20 Feb 2019 19:02:01 -0330 X-Mailer: MailMate (1.12.4r5594) Message-ID: In-Reply-To: <53a0bd68-a6ba-e8ad-4af2-abeb22e92c03@FreeBSD.org> References: <8a139c9c-b98b-4a54-1d7c-0ea1e3dc7a72@freebsd.org> <53a0bd68-a6ba-e8ad-4af2-abeb22e92c03@FreeBSD.org> MIME-Version: 1.0 Content-Type: text/plain; format=flowed X-Rspamd-Queue-Id: 6B0E871F36 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.98 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.996,0]; NEURAL_HAM_SHORT(-0.99)[-0.985,0]; ASN(0.00)[asn:11403, ipnet:96.47.64.0/20, country:US]; NEURAL_HAM_LONG(-1.00)[-0.999,0] X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Feb 2019 22:32:05 -0000 On 20 Feb 2019, at 18:50, Alex Dupre wrote: > Colin Percival wrote: >> Last time I looked at this, we weren't handling hotplug/hotunplug of >> "NVMe" >> disks properly on the m5/c5/etc. instances. I opted to recommend the >> instance >> which completely works rather than the one with slightly better >> performance... > > It does happen only on a few instances, but I get some freezes on new > t3 > machines: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235856 > > They are indeed cheaper and more performant, but not 100% reliable in > every workload. https://www.xkcd.com/937 ? :) Jon -- Jonathan Anderson jonathan@FreeBSD.org