From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bill Fink Subject: Re: limited network bandwidth with 3.2.x kernels Date: Wed, 15 Feb 2012 03:18:16 -0500 Message-ID: <20120215031816.7afeef08.billfink@mindspring.com> 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> <1329292820.2555.47.camel@edumazet-laptop> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Neal Cardwell , alekcejk@googlemail.com, netdev@vger.kernel.org To: Eric Dumazet Return-path: Received: from elasmtp-banded.atl.sa.earthlink.net ([209.86.89.70]:39031 "EHLO elasmtp-banded.atl.sa.earthlink.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757925Ab2BOISV convert rfc822-to-8bit (ORCPT ); Wed, 15 Feb 2012 03:18:21 -0500 In-Reply-To: <1329292820.2555.47.camel@edumazet-laptop> Sender: netdev-owner@vger.kernel.org List-ID: On Wed, 15 Feb 2012, Eric Dumazet wrote: > Le mercredi 15 f=E9vrier 2012 =E0 02:52 -0500, Bill Fink a =E9crit : >=20 > > 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 >=20 > I did yesterday and found nothing interesting. Do your SYSCTL1 and SYSCTL2 files include /sys/module/tcp_* as well as /proc/sys? Not that I know of anything that might have changed in /sys/module/tcp_* between 3.1 and 3.2, but you never know what a particular distro might have tweaked. -Bill > # 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