From owner-freebsd-hackers@freebsd.org Mon Jan 28 21:05:00 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 25AB514BF9CD for ; Mon, 28 Jan 2019 21:05:00 +0000 (UTC) (envelope-from bu7cher@yandex.ru) Received: from forward100o.mail.yandex.net (forward100o.mail.yandex.net [37.140.190.180]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 190E877EEF for ; Mon, 28 Jan 2019 21:04:58 +0000 (UTC) (envelope-from bu7cher@yandex.ru) Received: from mxback3j.mail.yandex.net (mxback3j.mail.yandex.net [IPv6:2a02:6b8:0:1619::10c]) by forward100o.mail.yandex.net (Yandex) with ESMTP id 9BD074AC1825; Tue, 29 Jan 2019 00:04:50 +0300 (MSK) Received: from smtp4o.mail.yandex.net (smtp4o.mail.yandex.net [2a02:6b8:0:1a2d::28]) by mxback3j.mail.yandex.net (nwsmtp/Yandex) with ESMTP id 6wKU6hPoJn-4owiJHYA; Tue, 29 Jan 2019 00:04:50 +0300 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1548709490; bh=vSNMcMcDv6lkb+MZH+V27sRXhEkAJr65jQfgzT6w13U=; h=Subject:To:Cc:References:From:Message-ID:Date:In-Reply-To; b=rOWlf66aDqX0L5h0HH7rrpf2mf3BXrKClgXr/9rKmrt6sCYKZChCkF4CaY7X3hXl9 hhR3mGhvt6YoOOxVDizmulR1mSbo079tUMid99hIqh6e8uDwND3gw7tRn0Bins2JNI r896V+klwPsvZsc0EZzAnxkrA9XaqgrBuDU2o8tU= Received: by smtp4o.mail.yandex.net (nwsmtp/Yandex) with ESMTPSA id xTcjedm24o-4nnK2sDF; Tue, 29 Jan 2019 00:04:49 +0300 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client certificate not present) Subject: Re: CPU Isolation To: Mark Saad Cc: FreeBSD Hackers References: <0e842838-e7d0-1b86-e27e-8d1562e70aee@yandex.ru> From: "Andrey V. Elsukov" Openpgp: id=E6591E1B41DA1516F0C9BC0001C5EA0410C8A17A Autocrypt: addr=bu7cher@yandex.ru; prefer-encrypt=mutual; keydata= mQENBEwBF1kBCADB9sXFhBEUy8qQ4X63Y8eBatYMHGEFWN9ypS5lI3RE6qQW2EYbxNk7qUC5 21YIIS1mMFVBEfvR7J9uc7yaYgFCEb6Sce1RSO4ULN2mRKGHP3/Sl0ijZEjWHV91hY1YTHEF ZW/0GYinDf56sYpDDehaBF5wkWIo1+QK5nmj3vl0DIDCMNd7QEiWpyLVwECgLX2eOAXByT8B bCqVhJGcG6iFP7/B9Ll6uX5gb8thM9LM+ibwErDBVDGiOgvfxqidab7fdkh893IBCXa82H9N CNwnEtcgzh+BSKK5BgvPohFMgRwjti37TSxwLu63QejRGbZWSz3OK3jMOoF63tCgn7FvABEB AAG0JUFuZHJleSBWLiBFbHN1a292IDxidTdjaGVyQHlhbmRleC5ydT6JATgEEwECACIFAkwB F1kCGwMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEAHF6gQQyKF6qmYIAI6ekfm1VA4T vqankI1ISE6ku4jV7UlpIQlEbE7/8n3Zd6teJ+pGOQhN5qk8QE7utdPdbktAzi+x7LIJVzUw 4TywZLXGrkP7VKYkfg6oyCGyzITghefQeJtr2TN4hYCkzPWpylkue8MtmqfZv/6royqwTbN+ +E09FQNvTgRUYJYTeQ1qOsxNRycwvw3dr2rOfuxShbzaHBB1pBIjGrMg8fC5pd65ACH5zuFV A0CoTNGMDrEZSfBkTW604UUHFFXeCoC3dwDZRKOWJ3GmMXns65Ai5YkA63BSHEE1Qle3VBhd cG1w0CB5FBV3pB27UVnf0jEbysrDqW4qN7XMRFSWNAy5AQ0ETAEXWQEIAJ2p6l9LBoqdH/0J PEFDY2t2gTvAuzz+8zs3R03dFuHcNbOwjvWCG0aOmVpAzkRa8egn5JB4sZaFUtKPYJEQ1Iu+ LUBwgvtXf4vWpzC67zs2dDuiW4LamH5p6xkTD61aHR7mCB3bg2TUjrDWn2Jt44cvoYxj3dz4 S49U1rc9ZPgD5axCNv45j72tggWlZvpefThP7xT1OlNTUqye2gAwQravXpZkl5JG4eOqJVIU X316iE3qso0iXRUtO7OseBf0PiVmk+wCahdreHOeOxK5jMhYkPKVn7z1sZiB7W2H2TojbmcK HZC22sz7Z/H36Lhg1+/RCnGzdEcjGc8oFHXHCxUAEQEAAYkBHwQYAQIACQUCTAEXWQIbDAAK CRABxeoEEMihegkYCAC3ivGYNe2taNm/4Nx5GPdzuaAJGKWksV+w9mo7dQvU+NmI2az5w8vw 98OmX7G0OV9snxMW+6cyNqBrVFTu33VVNzz9pnqNCHxGvj5dL5ltP160JV2zw2bUwJBYsgYQ WfyJJIM7l3gv5ZS3DGqaGIm9gOK1ANxfrR5PgPzvI9VxDhlr2juEVMZYAqPLEJe+SSxbwLoz BcFCNdDAyXcaAzXsx/E02YWm1hIWNRxanAe7Vlg7OL+gvLpdtrYCMg28PNqKNyrQ87LQ49O9 50IIZDOtNFeR0FGucjcLPdS9PiEqCoH7/waJxWp6ydJ+g4OYRBYNM0EmMgy1N85JJrV1mi5i Message-ID: Date: Tue, 29 Jan 2019 00:01:38 +0300 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="0gOaGfzy4uR0QCkjOcUTlO6hoGKwlijVN" X-Rspamd-Queue-Id: 190E877EEF X-Spamd-Bar: ------ Authentication-Results: mx1.freebsd.org; dkim=pass header.d=yandex.ru header.s=mail header.b=rOWlf66a; dmarc=pass (policy=none) header.from=yandex.ru; spf=pass (mx1.freebsd.org: domain of bu7cher@yandex.ru designates 37.140.190.180 as permitted sender) smtp.mailfrom=bu7cher@yandex.ru X-Spamd-Result: default: False [-6.96 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; FREEMAIL_FROM(0.00)[yandex.ru]; R_SPF_ALLOW(-0.20)[+ip4:37.140.128.0/18]; HAS_ATTACHMENT(0.00)[]; RCVD_COUNT_THREE(0.00)[4]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[yandex.ru:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[yandex.ru,none]; MX_GOOD(-0.01)[cached: mx.yandex.ru]; SIGNED_PGP(-2.00)[]; NEURAL_HAM_SHORT(-0.98)[-0.982,0]; RCVD_IN_DNSWL_LOW(-0.10)[180.190.140.37.list.dnswl.org : 127.0.5.1]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:+]; FREEMAIL_ENVFROM(0.00)[yandex.ru]; ASN(0.00)[asn:13238, ipnet:37.140.128.0/18, country:RU]; MID_RHS_MATCH_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[yandex.ru.dwl.dnswl.org : 127.0.5.0]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[yandex.ru:s=mail]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.20)[multipart/signed,multipart/mixed,text/plain]; RCVD_TLS_LAST(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; IP_SCORE(-0.77)[asn: 13238(-3.84), country: RU(0.00)] 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: Mon, 28 Jan 2019 21:05:00 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --0gOaGfzy4uR0QCkjOcUTlO6hoGKwlijVN Content-Type: multipart/mixed; boundary="1Vc4IEhZovUVfTQtXqpfaonPHZTy0goIz"; protected-headers="v1" From: "Andrey V. Elsukov" To: Mark Saad Cc: FreeBSD Hackers Message-ID: Subject: Re: CPU Isolation References: <0e842838-e7d0-1b86-e27e-8d1562e70aee@yandex.ru> In-Reply-To: --1Vc4IEhZovUVfTQtXqpfaonPHZTy0goIz Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 28.01.2019 22:25, Mark Saad wrote: > All > Thanks for the replies, I had experimented with the init script > method but ; I kept thinking that I was doing this wrong. I think that > adding a loader option to > isolate cpus from the scheduler would be useful; but I have no idea > how to get there. My current plans are to setup init to use cpus 0-4 > and to use 5-7 for my applications > and see how it goes. The other test I want to try is to run some > kernel threads on dedicated cores. Let me try to break stuff now. As r331723 says, now kernel threads belong to cpuset #2, all other processes belong to cpuset 1. So, you can try to use commands: Limit all userlevel application to use only CPU cores 0-4: # cpuset -s 1 -l 0-4 Limit kernel level threads to use CPU only CPU cores 0-4: # cpuset -s 2 -l 0-4 and then dedicate CPUs 5-7 for your application with pid PID # cpuset -l 5-7 -p PID --=20 WBR, Andrey V. Elsukov --1Vc4IEhZovUVfTQtXqpfaonPHZTy0goIz-- --0gOaGfzy4uR0QCkjOcUTlO6hoGKwlijVN Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Comment: Using GnuPG with Thunderbird - https://www.enigmail.net/ iQEzBAEBCAAdFiEE5lkeG0HaFRbwybwAAcXqBBDIoXoFAlxPbbIACgkQAcXqBBDI oXqM3Af+JVauRTNAb1zdf8msElT5R40HUAslbM3/RTIrS9bzLL1K3yRy/72rSXOY LSLtWRTOWQQqkQ2qd2NxdFbiIzGINAuCJ8GJO+SKARRIsabWPOsXWw1z9mVl5hdi 5VbumtDHs+T3LqzRr2024KUF3GV+yNeSjUEW9Yp8H9JU9xWuOuicOcNMGH33OS/S +52Az2l+s062kKcZwrypI9X+qg5PyX380C5A/0iO/vcHOfQshD98hRe+bjWpDuiJ sNyJXucXtyIs37WRe8xmyK7gec4/LZ8ivWpHxmdJcHu2Dy33EardlgNBOfJLVTQ4 cVUfbAfl5pp6PaxgQKGrhrwl19Wqxw== =PqgO -----END PGP SIGNATURE----- --0gOaGfzy4uR0QCkjOcUTlO6hoGKwlijVN--