From nobody Wed Oct 11 18:28:04 2023 X-Original-To: freebsd-virtualization@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 4S5Lqf2Dtzz4wWfX for ; Wed, 11 Oct 2023 18:28:14 +0000 (UTC) (envelope-from sean@rogue-research.com) Received: from mail.rogue-research.com (mail.rogue-research.com [207.115.102.151]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.rogue-research.com", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4S5Lqd4bvrz4XmK for ; Wed, 11 Oct 2023 18:28:13 +0000 (UTC) (envelope-from sean@rogue-research.com) Authentication-Results: mx1.freebsd.org; dkim=none; spf=pass (mx1.freebsd.org: domain of sean@rogue-research.com designates 207.115.102.151 as permitted sender) smtp.mailfrom=sean@rogue-research.com; dmarc=pass (policy=none) header.from=rogue-research.com Received: from localhost (localhost [127.0.0.1]) by mail.rogue-research.com (Postfix) with ESMTP id 5E1A4F019878 for ; Wed, 11 Oct 2023 14:28:06 -0400 (EDT) X-Virus-Scanned: amavisd-new at rogue-research.com Received: from mail.rogue-research.com ([127.0.0.1]) by localhost (kingu.rogue-research.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id KCpv4bRvTd28 for ; Wed, 11 Oct 2023 14:28:05 -0400 (EDT) Received: from [192.168.64.1] (hobgoblin.rogue-research.com [10.29.19.119]) by mail.rogue-research.com (Postfix) with ESMTPSA id 1AB92F01986C for ; Wed, 11 Oct 2023 14:28:05 -0400 (EDT) From: Sean McBride To: FreeBSD virtualization Subject: bhyve guests: what clock source to use? Date: Wed, 11 Oct 2023 14:28:04 -0400 X-Mailer: MailMate (1.14r5937) Message-ID: <415C25C7-27B1-4706-BD4B-D484E4B6787B@rogue-research.com> List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-virtualization@freebsd.org X-BeenThere: freebsd-virtualization@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; markup=markdown Content-Transfer-Encoding: quoted-printable X-Spamd-Bar: - X-Spamd-Result: default: False [-1.11 / 15.00]; SUBJECT_ENDS_QUESTION(1.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; DMARC_POLICY_ALLOW(-0.50)[rogue-research.com,none]; R_MISSING_CHARSET(0.50)[]; R_SPF_ALLOW(-0.20)[+mx]; NEURAL_SPAM_SHORT(0.19)[0.189]; MIME_GOOD(-0.10)[text/plain]; BLOCKLISTDE_FAIL(0.00)[207.115.102.151:server fail]; RCVD_TLS_LAST(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; MLMMJ_DEST(0.00)[freebsd-virtualization@freebsd.org]; ASN(0.00)[asn:11478, ipnet:207.115.96.0/20, country:CA]; R_DKIM_NA(0.00)[]; TO_DN_ALL(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; RCPT_COUNT_ONE(0.00)[1]; FREEFALL_USER(0.00)[sean]; RCVD_VIA_SMTP_AUTH(0.00)[]; MIME_TRACE(0.00)[0:+]; FROM_HAS_DN(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-virtualization@freebsd.org]; TO_MATCH_ENVRCPT_ALL(0.00)[]; ARC_NA(0.00)[]; MID_RHS_MATCH_FROM(0.00)[] X-Rspamd-Queue-Id: 4S5Lqd4bvrz4XmK Hi all, As part of debugging a problem I'm having, I'd like to understand: What clock source should bhyve guests use? tsc? hpet? acpi_pm? What are= pros/cons of the choices? Does it depend on the guest OS? (for me FreeB= SD and Ubuntu) Should it match the host? Thanks, Sean