From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: limited network bandwidth with 3.2.x kernels Date: Wed, 15 Feb 2012 09:00:20 +0100 Message-ID: <1329292820.2555.47.camel@edumazet-laptop> References: <8633039.fHPLx6GNq3@localhost.localdomain> <5133914.uYLb0gnNTc@localhost.localdomain> <1329235210.4818.1.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <5781419.24ZaHfTAxC@localhost.localdomain> <1329280993.2555.21.camel@edumazet-laptop> <1329286016.2555.41.camel@edumazet-laptop> <20120215025200.6e6f02a2.billfink@mindspring.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Neal Cardwell , alekcejk@googlemail.com, netdev@vger.kernel.org To: Bill Fink Return-path: Received: from mail-wi0-f174.google.com ([209.85.212.174]:63574 "EHLO mail-wi0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757624Ab2BOIAZ (ORCPT ); Wed, 15 Feb 2012 03:00:25 -0500 Received: by wics10 with SMTP id s10so324879wic.19 for ; Wed, 15 Feb 2012 00:00:24 -0800 (PST) In-Reply-To: <20120215025200.6e6f02a2.billfink@mindspring.com> Sender: netdev-owner@vger.kernel.org List-ID: Le mercredi 15 f=C3=A9vrier 2012 =C3=A0 02:52 -0500, Bill Fink a =C3=A9= crit : > Would it be useful to check if there was any difference in > TCP parameters between the 3.1 and 3.2 kernels by performing > the following on each: >=20 > grep . /sys/module/tcp_*/parameters/* >=20 > -Bill I did yesterday and found nothing interesting. # diff SYSCTL1 SYSCTL2 13a14 > kernel.sched_cfs_bandwidth_slice_us =3D 5000 18c19 < kernel.tainted =3D 513 --- > kernel.tainted =3D 4609 33c34 < kernel.threads-max =3D 48402 --- > kernel.threads-max =3D 48398 35c36 < kernel.random.entropy_avail =3D 2200 --- > kernel.random.entropy_avail =3D 1715 38,39c39,40 < kernel.random.boot_id =3D da6427fc-eb8e-40a8-8809-8cae94a65fb5 < kernel.random.uuid =3D 118c4362-a2a2-4973-ab3e-a09a0ed306ff --- > kernel.random.boot_id =3D 2f77031a-9e65-4358-9c02-09058831507a > kernel.random.uuid =3D 44cdd730-9c00-4a85-87c3-0a5b1c7c1278 52a54 > kernel.cap_last_cap =3D 35 102,103c104,105 < kernel.osrelease =3D 2.6.41.10-3.fc15.i686 < kernel.version =3D #1 SMP Mon Jan 23 15:44:18 UTC 2012 --- > kernel.osrelease =3D 2.6.42.3-2.fc15.i686 > kernel.version =3D #1 SMP Thu Feb 9 01:39:19 UTC 2012 111c113 < kernel.msgmni =3D 1675 --- > kernel.msgmni =3D 1674 116c118 < kernel.pty.nr =3D 2 --- > kernel.pty.nr =3D 3 152,155c154,157 < fs.inode-nr =3D 9875 61 < fs.inode-state =3D 9875 61 0 0 0 0 0 < fs.file-nr =3D 7328 0 309733 < fs.file-max =3D 309733 --- > fs.inode-nr =3D 23853 1607 > fs.inode-state =3D 23853 1607 0 0 0 0 0 > fs.file-nr =3D 6112 0 309720 > fs.file-max =3D 309720 157c159 < fs.dentry-state =3D 9913 1327 45 0 0 0 --- > fs.dentry-state =3D 27730 17922 45 0 0 0 168c170 < fs.epoll.max_user_watches =3D 337762 --- > fs.epoll.max_user_watches =3D 337644 272c274 < net.netfilter.nf_conntrack_count =3D 62 --- > net.netfilter.nf_conntrack_count =3D 26 284,285c286,287 < net.core.wmem_default =3D 114688 < net.core.rmem_default =3D 114688 --- > net.core.wmem_default =3D 163840 > net.core.rmem_default =3D 163840 301d302 < net.ipv4.route.gc_interval =3D 60 601c602 < net.ipv6.conf.all.regen_max_retry =3D 5 --- > net.ipv6.conf.all.regen_max_retry =3D 3 630c631 < net.ipv6.conf.default.regen_max_retry =3D 5 --- > net.ipv6.conf.default.regen_max_retry =3D 3 659c660 < net.ipv6.conf.lo.regen_max_retry =3D 5 --- > net.ipv6.conf.lo.regen_max_retry =3D 3 688c689 < net.ipv6.conf.eth0.regen_max_retry =3D 5 --- > net.ipv6.conf.eth0.regen_max_retry =3D 3