From nobody Tue Feb 07 13:29:15 2023 X-Original-To: freebsd-stable@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4PB3rM5QfDz3myyb for ; Tue, 7 Feb 2023 13:29:23 +0000 (UTC) (envelope-from mike@karels.net) Received: from mail2.karels.net (mail2.karels.net [3.19.118.201]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "freebsd", Issuer "freebsd" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4PB3rM3G9rz3Mjx for ; Tue, 7 Feb 2023 13:29:23 +0000 (UTC) (envelope-from mike@karels.net) Authentication-Results: mx1.freebsd.org; none Received: from mail2.karels.net (localhost [IPv6:0:0:0:0:0:0:0:1]) by mail2.karels.net (8.16.1/8.16.1) with ESMTP id 317DTGcO030932; Tue, 7 Feb 2023 07:29:16 -0600 (CST) (envelope-from mike@karels.net) Received: from [10.0.2.130] ([73.62.165.147]) by mail2.karels.net with ESMTPSA id X22eCyxS4mPSeAAAs/W3XQ (envelope-from ); Tue, 07 Feb 2023 07:29:16 -0600 From: Mike Karels To: mike tancsa Cc: FreeBSD-STABLE Mailing List Subject: Re: Raptor Lake / Alder lake on RELENG_13 ? Date: Tue, 07 Feb 2023 07:29:15 -0600 X-Mailer: MailMate (1.14r5937) Message-ID: In-Reply-To: <0600fbab-035f-fd23-a6d7-27cd2f58665e@sentex.net> References: <0600fbab-035f-fd23-a6d7-27cd2f58665e@sentex.net> List-Id: Production branch of FreeBSD source code List-Archive: https://lists.freebsd.org/archives/freebsd-stable List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-stable@freebsd.org X-BeenThere: freebsd-stable@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: 4PB3rM3G9rz3Mjx X-Spamd-Bar: ---- X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:16509, ipnet:3.16.0.0/14, country:US] X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-ThisMailContainsUnwantedMimeParts: N On 6 Feb 2023, at 16:04, mike tancsa wrote: > Hi All, > > =C2=A0=C2=A0=C2=A0 I have seen a couple of commits around these CPUs, b= ut wondering if anyone is running 13 on these newer hybrid CPUs ? Do the = slower cores just get disabled or are they made use of somehow ? > > =C2=A0=C2=A0=C2=A0 ---Mike I have been testing the changes on -current, and they are working fine. = I have not tested on 13, but I would expect the same result. The workaro= und is on 13-stable, but not yet a RELENG branch. Presumably it will be = in 13.2 when it is branched. If no one else has reported, I will test th= e 13.2 branch. Also, I haven=E2=80=99t heard of tests on Raptor Lake, bu= t I have heard that the behavior should be the same as Alder Lake. The E-cores are not disabled. They are forced to use a less efficient me= thod of page invalidation. They are scheduled as if they were P-cores wi= thout threads, but they are less used because of the shared cache among 4= cores rather than 2. I have some preliminary scheduler changes that rec= ognize the slower cores, but there are still issues to be dealt with. Mike