From owner-freebsd-net@freebsd.org Thu Oct 19 13:03:12 2017 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 75440E3AC9A for ; Thu, 19 Oct 2017 13:03:12 +0000 (UTC) (envelope-from lev@FreeBSD.org) Received: from onlyone.not-for.work (onlyone.not-for.work [148.251.9.81]) by mx1.freebsd.org (Postfix) with ESMTP id 397A2689B1 for ; Thu, 19 Oct 2017 13:03:11 +0000 (UTC) (envelope-from lev@FreeBSD.org) Received: from [192.168.19.110] (unknown [89.113.128.32]) (Authenticated sender: lev@serebryakov.spb.ru) by onlyone.not-for.work (Postfix) with ESMTPSA id B9E29F6B for ; Thu, 19 Oct 2017 16:03:09 +0300 (MSK) To: freebsd-net@freebsd.org Reply-To: lev@FreeBSD.org From: Lev Serebryakov Subject: igb0 sometimes consume 100% of 4 cores for not-too-heavy traffic Organization: FreeBSD Message-ID: <82cf7080-b473-3e6c-5e8f-9f004c8a288f@FreeBSD.org> Date: Thu, 19 Oct 2017 16:03:02 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="3A2Pw5sjFaI1BjgAJCIfpv7NXHxXINCUX" X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 19 Oct 2017 13:03:12 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --3A2Pw5sjFaI1BjgAJCIfpv7NXHxXINCUX Content-Type: multipart/mixed; boundary="xfhOwXpHAIp8VjXjcLjfvNDaw8o3MOIa5"; protected-headers="v1" From: Lev Serebryakov Reply-To: lev@FreeBSD.org To: freebsd-net@freebsd.org Message-ID: <82cf7080-b473-3e6c-5e8f-9f004c8a288f@FreeBSD.org> Subject: igb0 sometimes consume 100% of 4 cores for not-too-heavy traffic --xfhOwXpHAIp8VjXjcLjfvNDaw8o3MOIa5 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable I have system on SuperMicro MoBo with built-in I210 adapters. CPU is E3-1220v3, 4 cores, and igb0 driver creates 4 queues. FreeBSD version is 11.1-STABLE r324205. Sometimes system becomes very unresponsive and igb0 queues consume 100% of CPU for tens of minutes. System doesn't have any firewall, NAT or other additional network processing. I don't believe, that it is normal behavior, because only possible load on this server at these moments is torrents, which could not be more than 100MBit/s (my connection to Internet). 100% of 4 cores of E3-1220v3 for 50-60Mbit/s? Really? Looks like a bug= =2E --=20 // Lev Serebryakov --xfhOwXpHAIp8VjXjcLjfvNDaw8o3MOIa5-- --3A2Pw5sjFaI1BjgAJCIfpv7NXHxXINCUX Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEE+W0coLX0MYtnSzMK6rA8WL/cR48FAlnoooxfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldEY5 NkQxQ0EwQjVGNDMxOEI2NzRCMzMwQUVBQjAzQzU4QkZEQzQ3OEYACgkQ6rA8WL/c R48gkA/+I/xcl/wg6NT34AWD90lAnp1Y2wlyFBJ90VE/Qn10hzBbvrVNbGGJ14xp ppusCisX4cKh0sL9kKkW/voaVkP1gNtzaMcm36Uoc+pkobW9T8WMBZ+pS3wsq7Kn u/KjmF44Yau8s940kp4iOUZgCdGmG7P7zalzJZe8z3G9guDckCvGlNGff4xaT8P2 /Rpl1SHEgjfFIMFwp6sqVgm0/1rj0oFzzxIVHJ06X31+k/bhz5nmIJCvGbOPzuE8 Wj2DlWXOUW6RuPRfuvok27aef0IKlDpRIFXAGfmYrroBVl8h4uxQoxzGy1k3gP2R cNz6dMugCkkedt8LicU/9O9GX/4i8fOQ7gMBKeqtR7cPDA+w1T3QnG4/wO3WIQjl VWTP26UBcbZbnoSF6WApM1sKaNZMnJWaN726EyZtsfD8AE7kaH/loMyHQ8GkOTiA Sy6AxnN7FdZgEpMr56r0zfiAmFwoFQsffQz1lgjy2kuW/NtyFfoWQJWNUK8wsL9W VSUTAogn4kXBXWnoQgCxy9elYIbCoj5mi/8O0SAkX+HCWaWPrVNrae5TPNKvULOm cLIMN6Pw2cz5OPyk78u/bRvs3577fq3fT82oqkg4H0VGePvTCKPZOaln0dBQXOyQ aYtwZqxNCq3/ZcbyPy95uJlMpDMWyC+f22L98LkkV+mvpdgi6YA= =I35/ -----END PGP SIGNATURE----- --3A2Pw5sjFaI1BjgAJCIfpv7NXHxXINCUX--