From owner-freebsd-virtualization@freebsd.org Sun Feb 14 16:03:41 2021 Return-Path: Delivered-To: freebsd-virtualization@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 39791533865 for ; Sun, 14 Feb 2021 16:03:41 +0000 (UTC) (envelope-from shawn.webb@hardenedbsd.org) Received: from mail-qk1-x735.google.com (mail-qk1-x735.google.com [IPv6:2607:f8b0:4864:20::735]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4DdsV43FQJz3kL4 for ; Sun, 14 Feb 2021 16:03:40 +0000 (UTC) (envelope-from shawn.webb@hardenedbsd.org) Received: by mail-qk1-x735.google.com with SMTP id c3so3776767qkj.11 for ; Sun, 14 Feb 2021 08:03:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=hardenedbsd.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=8tXrkAnqmFJTn+FtwYt73SGRlJFG7HvmZlTmaL1ibew=; b=I/80gKzWyrjKDTMdCZ07EYzrf1A561Vpg/Ireia3MwZgdyfNQHtPx0wjPVYpJq4WU6 NUaQO2921olTei+mfFx56HN6kiGJQblrDIEbgQomK+u4+pyITXBjqWiQqzTcAmDHWDN6 ZuNDU8L/ZXxqtYGCvW3c7SF8m/0EsnW0c3ka5O1KR814ezuIOz+cb0sygeovloAz/Yto OHNygV95Qzkh80z6t4KT4uDqv4mAO+VmCOkOI5j7Z1lAJ8NNSn4cwkXr7JYV02+6HZgv 9/kj9MWVGXdaVLkdHP07vO59zwqdNGTe0F07MpHmP2cCgJ/7Gh+lwShgZvoGxcmaJDhb gGqg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=8tXrkAnqmFJTn+FtwYt73SGRlJFG7HvmZlTmaL1ibew=; b=NkWO4YxLYP6D6q3bZb7boiceyBEsbIAbAXCJ6yw+s7Lhr9/8eUTrzXqu6klE5XBqmX +eVNrpgUJi57DqKt7dB+kXwDSj8/IHfjc3/c8jaXWJ/ONWaJc4IGrzt7d3Wlis0RlZy0 zNcOCVO5SubAZ8709IYzx3WpzFaF6HXYNMZaiSb3oVu4HoEvz+ykvtb6UCUg78nwts0X RM1naPFM7YQ0GBbang5OkevG23C5COvnq3RtGz2Slr7tAqzjBfdE2wloiHV3T7/J0mnq XeRCAl9YAcd4UcSRv7ItX1HO5smgNyDb0s3XEqnlNSh9Kz+xUIyPaj1UAw4VpokUN+lv vWwg== X-Gm-Message-State: AOAM5324PyyoE3PaXq9iz0bG2+rXRIJJNu7OmA3CUlXib4ce5PBGqaTn Q5Mv82k7xpq9zzK/8ejmyO+mFg== X-Google-Smtp-Source: ABdhPJy01lv79ct/rgENjm1v8mL7YR3ZqNXEI3lrdhQacv33wMpMLvBvEApzZpvIOo+nNrxKSd0JQA== X-Received: by 2002:a05:620a:11a2:: with SMTP id c2mr11110369qkk.285.1613318619211; Sun, 14 Feb 2021 08:03:39 -0800 (PST) Received: from mutt-hbsd (pool-100-16-222-53.bltmmd.fios.verizon.net. [100.16.222.53]) by smtp.gmail.com with ESMTPSA id r25sm7815897qtt.89.2021.02.14.08.03.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 14 Feb 2021 08:03:38 -0800 (PST) Date: Sun, 14 Feb 2021 11:03:37 -0500 From: Shawn Webb To: Simon Connah Cc: "freebsd-virtualization@freebsd.org" Subject: Re: Any plans to increase the maximum number of virtual CPUs above 16? Message-ID: <20210214160337.6vn3xpxj6c6eryvt@mutt-hbsd> X-Operating-System: FreeBSD mutt-hbsd 14.0-CURRENT-HBSD FreeBSD 14.0-CURRENT-HBSD X-PGP-Key: http://pgp.mit.edu/pks/lookup?op=vindex&search=0xFF2E67A277F8E1FA References: <331a93ae-d4d8-e510-4499-7185e31fbbc9@gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="7kzl46p7jzbvkajm" Content-Disposition: inline In-Reply-To: <331a93ae-d4d8-e510-4499-7185e31fbbc9@gmail.com> X-Rspamd-Queue-Id: 4DdsV43FQJz3kL4 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=hardenedbsd.org header.s=google header.b=I/80gKzW; dmarc=none; spf=pass (mx1.freebsd.org: domain of shawn.webb@hardenedbsd.org designates 2607:f8b0:4864:20::735 as permitted sender) smtp.mailfrom=shawn.webb@hardenedbsd.org X-Spamd-Result: default: False [-2.74 / 15.00]; TO_DN_EQ_ADDR_SOME(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[hardenedbsd.org:+]; RCPT_COUNT_TWO(0.00)[2]; SIGNED_PGP(-2.00)[]; FREEMAIL_TO(0.00)[gmail.com]; FROM_EQ_ENVFROM(0.00)[]; SUBJECT_ENDS_QUESTION(1.00)[]; RBL_DBL_DONT_QUERY_IPS(0.00)[2607:f8b0:4864:20::735:from]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; MIME_TRACE(0.00)[0:+,1:+,2:~]; RECEIVED_SPAMHAUS_PBL(0.00)[100.16.222.53:received]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[hardenedbsd.org:s=google]; FROM_HAS_DN(0.00)[]; NEURAL_SPAM_SHORT(0.36)[0.356]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.20)[multipart/signed,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-virtualization@freebsd.org]; DMARC_NA(0.00)[hardenedbsd.org]; SPAMHAUS_ZRD(0.00)[2607:f8b0:4864:20::735:from:127.0.2.255]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::735:from]; MID_RHS_NOT_FQDN(0.50)[]; RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[freebsd-virtualization] X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 14 Feb 2021 16:03:41 -0000 --7kzl46p7jzbvkajm Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Nov 27, 2018 at 10:06:52PM +0000, Simon Connah wrote: > I was reading the bhyve man page and noticed that it said the maximum num= ber > of virtual CPUs is limited to 16. With AMD Epyc being out with 32 cores a= nd > 64 threads per CPU and being able to have 2 of them in one system this > number seems rather low by modern standards. >=20 > Are there any plans to increase this number to something like 32 virtual > CPUs? I'm running into this. I have a server that can handle way more than 16 vCPUs. I know this topic has been talked about several times, and theoretical discussions keep taking place. A bit more than two years later, and this is still a topic of discussion. I'm curious if anyone has a patch to punish me with. I'm very happy to be a guinea pig. Thanks, --=20 Shawn Webb Cofounder / Security Engineer HardenedBSD GPG Key ID: 0xFF2E67A277F8E1FA GPG Key Fingerprint: D206 BB45 15E0 9C49 0CF9 3633 C85B 0AF8 AB23 0FB2 https://git-01.md.hardenedbsd.org/HardenedBSD/pubkeys/src/branch/master/Sha= wn_Webb/03A4CBEBB82EA5A67D9F3853FF2E67A277F8E1FA.pub.asc --7kzl46p7jzbvkajm Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEA6TL67gupaZ9nzhT/y5nonf44foFAmApSdcACgkQ/y5nonf4 4fo7WBAAnaWEYt/oNKmrkULBvJJrZ15kBr5jV3WzDxUPtVAAxMX6vR49C1I3HEoq uulC2hxZG+A1zqGaNOnmwbRjThhonmi5yikczUwp1fWA5CsNaWUA2m/1k/pYSVjD W9R1+uF9tmPtdTmeBqt1JzsFPAwq+urX6KydMcY2VoA+7wU42RdqUTIQT+7eVo2T meQcLXVVNEypJ6X7cin6AAAFwG+L9WSPDnw3qSIJ8+aOOzB1LZKlVlLo6+ku/QWm NCyDHt0mBzO2PQDVgZYSjksDTDKRENhtgNuUoRIYv8dSQDuV6s4YsOHWpcZ0iTR5 2v/NneHlvX6RYRc78F/Uqw4YMNJgfi6vm47nu3wBp2whYZpN5ESWQtKUpCXKceLV Cq1hjil/lZG0Vy7SGyXokJPMgLctfTesAZ+622VHYnXD+FXFTPry2qo97fpZzRWx nIuz7D6mHmC4qhYtpl2hB6541ltrWCDhpecF9KalOjJCL9/FYtS6qwBQW8QZHha8 ADnwoR0JwF1XN/Lf0CjRHTMctTr6XQ/qnwVviKECnfCn9HVzmOqscGJ9okYaxeMf 4HmtJlxMSv3ntZEvqNc5ut2Zr+bwne0wHtz3wQqqgiqmKbw0nZi6xJnEG/JXOfvc CBVtKE6WPZn32S3hxP+vlQNuVq3I5l42Wrf0Pe+7N80GWxFHl3g= =Biof -----END PGP SIGNATURE----- --7kzl46p7jzbvkajm--