Path: csiph.com!news.mixmin.net!aioe.org!bofh.it!news.nic.it!robomod From: Vagrant Cascadian Newsgroups: linux.debian.bugs.dist,linux.debian.kernel Subject: Bug#820622: linux-image-4.5.0-trunk-armmp-lpae: raspberry pi 2: smsc95xx 1-1.1:1.0 eth0: kevent 2 may have been dropped Date: Mon, 02 May 2016 03:30:01 +0200 Message-ID: References: X-Original-To: Ben Hutchings , 820622@bugs.debian.org, Diederik de Haas X-Mailbox-Line: From debian-bugs-dist-request@lists.debian.org Mon May 2 01:24:12 2016 Old-Return-Path: X-Spam-Flag: NO X-Spam-Score: -5.196 Reply-To: Vagrant Cascadian , 820622@bugs.debian.org Resent-To: debian-bugs-dist@lists.debian.org Resent-Cc: Debian Kernel Team X-Debian-Pr-Message: followup 820622 X-Debian-Pr-Package: src:linux X-Debian-Pr-Keywords: patch moreinfo X-Debian-Pr-Source: linux X-Spam-Bayes: score:0.0000 Tokens: new, 18; hammy, 150; neutral, 103; spammy, 0. spammytokens: hammytokens:0.000-+--H*c:pgp-sha512, 0.000-+--H*UA:sk:x86_64-, 0.000-+--H*u:Notmuch, 0.000-+--H*u:notmuchmail.org, 0.000-+--H*UA:Notmuch User-Agent: Notmuch/0.18.2 (http://notmuchmail.org) Emacs/24.4.1 (x86_64-pc-linux-gnu) X-Hashcash: 1:20:160502:ben@decadent.org.uk::mGb8IWMY6tQqg7nn:00000000000000000000000000000000000000000001uQ X-Hashcash: 1:20:160502:didi.debian@cknow.org::m5vS7mJ5NLxyoXvA:00000000000000000000000000000000000000003L5l X-Hashcash: 1:20:160502:820622@bugs.debian.org::RX1L1OincHNtjwx3:000000000000000000000000000000000000000GcLy MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" X-Debian-Message: from BTS X-Mailing-List: archive/latest/1271791 List-ID: List-URL: Approved: robomod@news.nic.it Lines: 121 Organization: linux.* mail to news gateway Sender: robomod@news.nic.it X-Original-Date: Sun, 01 May 2016 18:20:59 -0700 X-Original-Message-ID: <871t5l2r2c.fsf@aikidev.net> X-Original-References: <1665547.eTK4qXpqrB@bagend> <1460333530.7108.96.camel@decadent.org.uk> <877fg5klcy.fsf@aikidev.net> <87wpo18i4g.fsf@aikidev.net> <1461856347.1169.40.camel@decadent.org.uk> Xref: csiph.com linux.debian.bugs.dist:735856 linux.debian.kernel:53879 --=-=-= Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Control: tag 820622 -moreinfo On 2016-04-28, Ben Hutchings wrote: > Could you test with turbo_mode re-enabled and with this patch applied? > > Also could you test network receive throughput (e.g. with netperf -t > TCP_STREAM, sending *to* the RPi) in these three different > configurations: Ok, if I understood you correctly... Installed netperf on another machine, and ran: netperf -t TCP_STREAM 10.0.0.50 Where 10.0.0.50 is the raspberry pi 2. Ran netperf twice for each combination, rebooting the raspberry pi 2 between changes in turbo_mode or kernel. Double-checked /sys/module/smsc95xx/parameters/turbo_mode contained N when booted with turbo_mode=3D0, and Y when turbo_mode=3D1. To my untrained eye, doesn't look like a significant difference between any of the modes. None of them triggered the kernel messages that prompted the bug report. > 1. turbo_mode=3D0 MIGRATED TCP STREAM TEST from 0.0.0.0 () port 0 AF_INET to localhost () p= ort 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec =20=20 87380 16384 16384 10.02 1781.22 MIGRATED TCP STREAM TEST from 0.0.0.0 () port 0 AF_INET to localhost () p= ort 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec =20=20 87380 16384 16384 10.02 1847.21 > 2. turbo_mode=3D1, current driver MIGRATED TCP STREAM TEST from 0.0.0.0 () port 0 AF_INET to localhost () p= ort 0 AF_INET : demo Recv Send Send=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20= =20=20=20=20=20=20=20=20 Socket Socket Message Elapsed=20=20=20=20=20=20=20=20=20=20=20=20=20=20 Size Size Size Time Throughput=20=20 bytes bytes bytes secs. 10^6bits/sec=20=20 =20=20 87380 16384 16384 10.02 1812.38=20=20=20 MIGRATED TCP STREAM TEST from 0.0.0.0 () port 0 AF_INET to localhost () p= ort 0 AF_INET : demo Recv Send Send=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20= =20=20=20=20=20=20=20=20 Socket Socket Message Elapsed=20=20=20=20=20=20=20=20=20=20=20=20=20=20 Size Size Size Time Throughput=20=20 bytes bytes bytes secs. 10^6bits/sec=20=20 =20=20 87380 16384 16384 10.02 1843.34=20=20=20 > 3. turbo_mode=3D1, patched driver MIGRATED TCP STREAM TEST from 0.0.0.0 () port 0 AF_INET to localhost () p= ort 0 AF_INET : demo Recv Send Send=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20= =20=20=20=20=20=20=20=20 Socket Socket Message Elapsed=20=20=20=20=20=20=20=20=20=20=20=20=20=20 Size Size Size Time Throughput=20=20 bytes bytes bytes secs. 10^6bits/sec=20=20 =20=20 87380 16384 16384 10.03 1822.99=20=20=20 MIGRATED TCP STREAM TEST from 0.0.0.0 () port 0 AF_INET to localhost () p= ort 0 AF_INET : demo Recv Send Send=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20= =20=20=20=20=20=20=20=20 Socket Socket Message Elapsed=20=20=20=20=20=20=20=20=20=20=20=20=20=20 Size Size Size Time Throughput=20=20 bytes bytes bytes secs. 10^6bits/sec=20=20 =20=20 87380 16384 16384 10.03 1824.52=20=20=20 live well, vagrant --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCgAGBQJXJqt8AAoJELeLgtSBS5G2Kr8P/0L6Lkfaaly3PdkeVIE67R/e e15fifgOVUqXDBOwd+wcMoUxCh6WIdJMjvw/xsdQ2vYE7Ywwp8Po11E2N440Tf+Z bP60wyRLEbKFnCdbngJwofkXS47SPX0LdyQtto9bVKA6dW7sxOQRmrBaZhCKTt9Z pf7nniC18sxTfj7lwKlapezqHsutI3g+FCEqEOb+bClWl5+n5XNtNJBpjy96COml FPv3g05nDFLkHeSxlY5EKzDm0r3EBgX+vtFhrZGbMXg97mMcxUkax/2av5mjpwe4 ML9TxMhi1Si1E0ltbudB3kdSSH4tjThIT+92getmgsxaaWysVlpdFTKxq01vH4HK qbSwS1ddlboXbxfCScKxxb0/n6RDpIOJH/QBHkDOLUFgiPSCICS7H0kIuBDzWK7C T3ENuFMq8BTFylTEd9wTQYx58zARvU71Us0gP9zbWoXeHiKdNXXjHQiCDY7cOvCJ HDeb6wbqiMt9LQJbXQrHCLgswihfUgaJzFuBDJLvzzh0KMUoFgtYbgQ3DohKoHmQ cNyENyZY6GosW8W2ioGrjsll7M47c74GpjJ22bLfhIGUdWEBpn3Ua0oguVug0pDD cRQq3rMeMN2DTIcFsMuZygLT5xaHl6U5C5goPwuipKybGQKGsY4ZS9lTzNEO5/At vLVbZbvJQRgItFpmfukg =5zzD -----END PGP SIGNATURE----- --=-=-=--