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Date: Mon, 8 Feb 2010 14:15:13 -0800 From: Andrew Morton <akpm@...ux-foundation.org> To: netdev@...r.kernel.org, e1000-devel@...ts.sourceforge.net Cc: bugzilla-daemon@...zilla.kernel.org, bugme-daemon@...zilla.kernel.org, Jeff Kirsher <jeffrey.t.kirsher@...el.com>, Jesse Brandeburg <jesse.brandeburg@...el.com>, Bruce Allan <bruce.w.allan@...el.com>, Alex Duyck <alexander.h.duyck@...el.com>, PJ Waskiewicz <peter.p.waskiewicz.jr@...el.com>, John Ronciak <john.ronciak@...el.com>, pstaszewski@...com.pl, stable@...nel.org Subject: Re: [Bugme-new] [Bug 15239] New: Problem with network performance after a while. (switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Sat, 6 Feb 2010 14:39:46 GMT bugzilla-daemon@...zilla.kernel.org wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=15239 > > Summary: Problem with network performance after a while. > Product: Networking > Version: 2.5 > Kernel Version: 2.6.33-rc6-git5 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: IPV4 > AssignedTo: shemminger@...ux-foundation.org > ReportedBy: pstaszewski@...com.pl > Regression: No > > > Hello the problem is that after some time of working my router have some > performance problems. > > The problem exist on kernel 2.6.32.7 and 2.6.33-rc6-git5 > The problem dont exist on 2.6.32.2 kernel. That would be bad. That's a regression in 2.6.33-rc, and we've backported that regression into 2.6.32.x -stable. > on 2.6.33-rc6-git5 i have this info:BUG: soft lockup - CPU#1 stuck for 61s! > [events/1:28] > Modules linked in: > CPU 1 > Pid: 28, comm: events/1 Not tainted 2.6.33-rc6-git5 #1 X7DCT/X7DCT > RIP: 0010:[<ffffffff810a3d89>] [<ffffffff810a3d89>] > kmem_cache_free+0x11b/0x11c > RSP: 0018:ffff880028243e50 EFLAGS: 00000292 > RAX: 0000000000000032 RBX: 000000000000007d RCX: ffff8803190683c0 > RDX: 0000000000000031 RSI: ffff8803190683c0 RDI: ffff88031f83e680 > RBP: ffffffff81002893 R08: 0000000000000000 R09: 000000000000007c > R10: ffff88030d776800 R11: ffff88030d7768a0 R12: ffff880028243dd0 > R13: ffffc900008b2f80 R14: ffff88031fa7c800 R15: ffffffff81012da7 > FS: 0000000000000000(0000) GS:ffff880028240000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > CR2: 00007fd61d5bd000 CR3: 000000031e55c000 CR4: 00000000000006a0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Process events/1 (pid: 28, threadinfo ffff88031f9c8000, task ffff88031f9a4f80) > Stack: > ffffffff8126826f ffff88031faa4600 ffffffff8126834a 000096ba00000023 > <0> 01ffc90000000024 ffff88031fbb4000 ffff88031faa4600 0000000000000040 > <0> 0000000000000040 ffff88031faa4788 ffff88031faa4600 0000000000000740 > Call Trace: > <IRQ> > [<ffffffff8126826f>] ? e1000_put_txbuf+0x62/0x74 > [<ffffffff8126834a>] ? e1000_clean_tx_irq+0xc9/0x235 > [<ffffffff8126b71b>] ? e1000_clean+0x5c/0x21c > [<ffffffff812f29a3>] ? net_rx_action+0x71/0x15d > [<ffffffff81035311>] ? __do_softirq+0xd7/0x196 > [<ffffffff81002dac>] ? call_softirq+0x1c/0x28 > [<ffffffff812f768f>] ? dst_gc_task+0x0/0x1a7 > [<ffffffff81002dac>] ? call_softirq+0x1c/0x28 > <EOI> > [<ffffffff81004599>] ? do_softirq+0x31/0x63 > [<ffffffff81034ec1>] ? local_bh_enable_ip+0x75/0x86 > [<ffffffff812f768f>] ? dst_gc_task+0x0/0x1a7 > [<ffffffff812f775d>] ? dst_gc_task+0xce/0x1a7 > [<ffffffff8136b08c>] ? schedule+0x82c/0x906 > [<ffffffff8103c44f>] ? lock_timer_base+0x26/0x4b > [<ffffffff810a41d6>] ? cache_reap+0x0/0x11d > [<ffffffff81044c38>] ? worker_thread+0x14c/0x1dc > [<ffffffff81047dcd>] ? autoremove_wake_function+0x0/0x2e > [<ffffffff81044aec>] ? worker_thread+0x0/0x1dc > [<ffffffff810479bd>] ? kthread+0x79/0x81 > [<ffffffff81002cb4>] ? kernel_thread_helper+0x4/0x10 > [<ffffffff81047944>] ? kthread+0x0/0x81 > [<ffffffff81002cb0>] ? kernel_thread_helper+0x0/0x10 > Code: fe 79 4c 00 48 85 db 74 14 48 8b 74 24 10 48 89 ef ff 13 48 83 c3 08 48 > 83 3b 00 eb ea 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f <c3> 55 48 89 f5 53 48 > 89 fb 48 83 ec 08 48 8b 76 18 48 2b 75 10 > Call Trace: > <IRQ> [<ffffffff8126826f>] ? e1000_put_txbuf+0x62/0x74 > [<ffffffff8126834a>] ? e1000_clean_tx_irq+0xc9/0x235 > [<ffffffff8126b71b>] ? e1000_clean+0x5c/0x21c > [<ffffffff812f29a3>] ? net_rx_action+0x71/0x15d > [<ffffffff81035311>] ? __do_softirq+0xd7/0x196 > [<ffffffff81002dac>] ? call_softirq+0x1c/0x28 > [<ffffffff812f768f>] ? dst_gc_task+0x0/0x1a7 > [<ffffffff81002dac>] ? call_softirq+0x1c/0x28 > <EOI> [<ffffffff81004599>] ? do_softirq+0x31/0x63 > [<ffffffff81034ec1>] ? local_bh_enable_ip+0x75/0x86 > [<ffffffff812f768f>] ? dst_gc_task+0x0/0x1a7 > [<ffffffff812f775d>] ? dst_gc_task+0xce/0x1a7 > [<ffffffff8136b08c>] ? schedule+0x82c/0x906 > [<ffffffff8103c44f>] ? lock_timer_base+0x26/0x4b > [<ffffffff810a41d6>] ? cache_reap+0x0/0x11d > [<ffffffff81044c38>] ? worker_thread+0x14c/0x1dc > [<ffffffff81047dcd>] ? autoremove_wake_function+0x0/0x2e > [<ffffffff81044aec>] ? worker_thread+0x0/0x1dc > [<ffffffff810479bd>] ? kthread+0x79/0x81 > [<ffffffff81002cb4>] ? kernel_thread_helper+0x4/0x10 > [<ffffffff81047944>] ? kthread+0x0/0x81 > [<ffffffff81002cb0>] ? kernel_thread_helper+0x0/0x10 > > And on 2.6.32.7 > Feb 4 13:12:40 TM_01_C1 ------------[ cut here ]------------ > Feb 4 13:12:40 TM_01_C1 WARNING: at net/sched/sch_generic.c:261 > dev_watchdog+0x130/0x1d6() > Feb 4 13:12:40 TM_01_C1 Hardware name: X7DCT > Feb 4 13:12:40 TM_01_C1 NETDEV WATCHDOG: eth0 (e1000e): transmit queue 0 timed > out > Feb 4 13:12:40 TM_01_C1 Modules linked in: oprofile > Feb 4 13:12:40 TM_01_C1 Pid: 0, comm: swapper Not tainted 2.6.32 #1 > Feb 4 13:12:40 TM_01_C1 Call Trace: > Feb 4 13:12:40 TM_01_C1 <IRQ> [<ffffffff812fcaf7>] ? dev_watchdog+0x130/0x1d6 > Feb 4 13:12:40 TM_01_C1 [<ffffffff812fcaf7>] ? dev_watchdog+0x130/0x1d6 > Feb 4 13:12:40 TM_01_C1 [<ffffffff81038811>] ? warn_slowpath_common+0x77/0xa3 > Feb 4 13:12:40 TM_01_C1 [<ffffffff81038899>] ? warn_slowpath_fmt+0x51/0x59 > Feb 4 13:12:40 TM_01_C1 [<ffffffff8102897e>] ? activate_task+0x3f/0x4e > Feb 4 13:12:40 TM_01_C1 [<ffffffff81034fe5>] ? try_to_wake_up+0x1eb/0x1f8 > Feb 4 13:12:40 TM_01_C1 [<ffffffff812eb768>] ? netdev_drivername+0x3b/0x40 > Feb 4 13:12:40 TM_01_C1 [<ffffffff812fcaf7>] ? dev_watchdog+0x130/0x1d6 > Feb 4 13:12:40 TM_01_C1 [<ffffffff8102d1e3>] ? __wake_up+0x30/0x44 > Feb 4 13:12:40 TM_01_C1 [<ffffffff812fc9c7>] ? dev_watchdog+0x0/0x1d6 > Feb 4 13:12:40 TM_01_C1 [<ffffffff810448c4>] ? run_timer_softirq+0x1ff/0x29d > Feb 4 13:12:40 TM_01_C1 [<ffffffff810556ab>] ? ktime_get+0x5f/0xb7 > Feb 4 13:12:40 TM_01_C1 [<ffffffff8103e0fd>] ? __do_softirq+0xd7/0x196 > Feb 4 13:12:40 TM_01_C1 [<ffffffff8100be7c>] ? call_softirq+0x1c/0x28 > Feb 4 13:12:40 TM_01_C1 [<ffffffff8100d645>] ? do_softirq+0x31/0x66 > Feb 4 13:12:40 TM_01_C1 [<ffffffff8101b148>] ? > smp_apic_timer_interrupt+0x87/0x95 > Feb 4 13:12:40 TM_01_C1 [<ffffffff8100b873>] ? apic_timer_interrupt+0x13/0x20 > Feb 4 13:12:40 TM_01_C1 <EOI> [<ffffffff810111f5>] ? mwait_idle+0x9b/0xa0 > Feb 4 13:12:40 TM_01_C1 [<ffffffff8100a236>] ? cpu_idle+0x49/0x7c > Feb 4 13:12:40 TM_01_C1 ---[ end trace c670a6a17be040e5 ]--- > > > Machine is a BGP router with some iproute traffic management. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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