Date: Thu, 19 Oct 2017 16:03:02 +0300 From: Lev Serebryakov <lev@FreeBSD.org> To: freebsd-net@freebsd.org Subject: igb0 sometimes consume 100% of 4 cores for not-too-heavy traffic Message-ID: <82cf7080-b473-3e6c-5e8f-9f004c8a288f@FreeBSD.org>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --3A2Pw5sjFaI1BjgAJCIfpv7NXHxXINCUX Content-Type: multipart/mixed; boundary="xfhOwXpHAIp8VjXjcLjfvNDaw8o3MOIa5"; protected-headers="v1" From: Lev Serebryakov <lev@FreeBSD.org> 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--
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