From owner-freebsd-hackers@freebsd.org Wed Feb 20 22:27:13 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 899DD14DEACA for ; Wed, 20 Feb 2019 22:27:13 +0000 (UTC) (envelope-from ale@FreeBSD.org) Received: from lab.alexdupre.com (lab.alexdupre.com [93.151.207.39]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id A83B071B77 for ; Wed, 20 Feb 2019 22:27:12 +0000 (UTC) (envelope-from ale@FreeBSD.org) Received: (qmail 21612 invoked from network); 20 Feb 2019 22:20:28 -0000 Received: from unknown (HELO ?192.168.178.163?) (sysadmin@alexdupre.com@192.168.178.163) by lab.alexdupre.com with ESMTPSA; 20 Feb 2019 22:20:28 -0000 Subject: Re: Amazon AMIs To: Colin Percival , Matthew Seaman , freebsd-hackers@freebsd.org References: <8a139c9c-b98b-4a54-1d7c-0ea1e3dc7a72@freebsd.org> From: Alex Dupre Message-ID: <53a0bd68-a6ba-e8ad-4af2-abeb22e92c03@FreeBSD.org> Date: Wed, 20 Feb 2019 23:20:28 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Firefox/52.0 SeaMonkey/2.49.4 MIME-Version: 1.0 In-Reply-To: <8a139c9c-b98b-4a54-1d7c-0ea1e3dc7a72@freebsd.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: A83B071B77 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.99 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; NEURAL_HAM_SHORT(-0.99)[-0.994,0]; ASN(0.00)[asn:30722, ipnet:93.151.128.0/17, country:IT] 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 22:27:13 -0000 Colin Percival wrote: > On 2/20/19 3:00 AM, Matthew Seaman wrote: >> Question:=C2=A0 Why is m4.large the recommended instance type?=C2=A0 S= urely we'd be >> better served and present users with a better experience by recommendi= ng an m5 >> instance as one of the more modern and higher performance types? >=20 > Last time I looked at this, we weren't handling hotplug/hotunplug of "N= VMe" > disks properly on the m5/c5/etc. instances. I opted to recommend the i= nstance > which completely works rather than the one with slightly better perform= ance... 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=3D235856 They are indeed cheaper and more performant, but not 100% reliable in every workload. --=20 Alex Dupre