I have spotted several (two so far) problems in system log:<br />
<br />
Jun 8 14:26:06 acme kernel: irq 19: nobody cared (try booting with the "irqpoll" option)<br />
Jun 8 14:26:06 acme kernel: Pid: 0, comm: swapper Not tainted 2.6.32-220.7.1.el6.x86_64 <a href="http://bugs.centos.org/view.php?id=1">0000001</a><br />
Jun 8 14:26:06 acme kernel: Call Trace:<br />
Jun 8 14:26:06 acme kernel: <IRQ> [<ffffffff810db42b>] ? __report_bad_irq+0x2b/0xa0<br />
Jun 8 14:26:06 acme kernel: [<ffffffff810db62c>] ? note_interrupt+0x18c/0x1d0<br />
Jun 8 14:26:06 acme kernel: [<ffffffff810dbd4d>] ? handle_fasteoi_irq+0xcd/0xf0<br />
Jun 8 14:26:06 acme kernel: [<ffffffff8100df09>] ? handle_irq+0x49/0xa0<br />
Jun 8 14:26:06 acme kernel: [<ffffffff814f4dbc>] ? do_IRQ+0x6c/0xf0<br />
Jun 8 14:26:06 acme kernel: [<ffffffff8100ba53>] ? ret_from_intr+0x0/0x11<br />
Jun 8 14:26:06 acme kernel: [<ffffffff8100ba53>] ? ret_from_intr+0x0/0x11<br />
Jun 8 14:26:06 acme kernel: <EOI> [<ffffffff812c4b0e>] ? intel_idle+0xde/0x170<br />
Jun 8 14:26:06 acme kernel: [<ffffffff812c4af1>] ? intel_idle+0xc1/0x170<br />
Jun 8 14:26:06 acme kernel: [<ffffffff813fa027>] ? cpuidle_idle_call+0xa7/0x140<br />
Jun 8 14:26:06 acme kernel: [<ffffffff81009e06>] ? cpu_idle+0xb6/0x110<br />
Jun 8 14:26:06 acme kernel: [<ffffffff814e5ffc>] ? start_secondary+0x202/0x245<br />
Jun 8 14:26:06 acme kernel: handlers:<br />
Jun 8 14:26:06 acme kernel: [<ffffffffa01e5020>] (rtl8169_interrupt+0x0/0x380 [r8169])<br />
Jun 8 14:26:06 acme kernel: Disabling IRQ #19<br />
<br />
Nothing seems to happen after that (hardware works, network connectivity isn't degraded).
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