[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1046326
Title:
Ubuntu Slow, crash, sluggish from version 10.04 upwards
Status in “linux” package in Ubuntu:
Expired
Bug description:
Ubuntu will at random points suddenly become very slow and sluggish.
graphics run far behind, keyboard strokes take multiple seconds to
show, graphics are updated in super slowmo mode, or if you're unlucky;
the system dies completely.
This is related to a problem with the interrupt handling. On my own
machine (MSI i7, nvidia card, 16 Gb, 5 sata HDD's) I have had this
problem from 10.04 (when I bough the hware) up to 12.04. I have since
upgraded up to various kernels up to 3.5.3 with varying results. Some
of the suggestions in posts make the periods between crashes shorter,
some days it works fine, some days it happens every five minutes, but
it NEVER goes away.
If you consider this is interrupt related, that makes perfect sense.
Every single 'crash' is marked by an unanswered interrupt. See below
syslog:
Sep 5 15:13:14 Server kernel: [112195.631364] irq 16: nobody cared (try
booting with the "irqpoll" option)
Sep 5 15:13:14 Server kernel: [112195.631368] Pid: 17901, comm: firefox
Tainted: P O 3.5.3-030503-generic #201208252335
Sep 5 15:13:14 Server kernel: [112195.631369] Call Trace:
Sep 5 15:13:14 Server kernel: [112195.631370] <IRQ> [<ffffffff810e5a5d>]
__report_bad_irq+0x3d/0xe0
Sep 5 15:13:14 Server kernel: [112195.631378] [<ffffffff810e5ce5>]
note_interrupt+0x135/0x190
Sep 5 15:13:14 Server kernel: [112195.631380] [<ffffffff810e3559>]
handle_irq_event_percpu+0xa9/0x210
Sep 5 15:13:14 Server kernel: [112195.631382] [<ffffffff810e370e>]
handle_irq_event+0x4e/0x80
Sep 5 15:13:14 Server kernel: [112195.631384] [<ffffffff810e6874>]
handle_fasteoi_irq+0x64/0x120
Sep 5 15:13:14 Server kernel: [112195.631388] [<ffffffff81016632>]
handle_irq+0x22/0x40
Sep 5 15:13:14 Server kernel: [112195.631391] [<ffffffff816a49ea>]
do_IRQ+0x5a/0xe0
Sep 5 15:13:14 Server kernel: [112195.631394] [<ffffffff8169a86a>]
common_interrupt+0x6a/0x6a
Sep 5 15:13:14 Server kernel: [112195.631395] <EOI> [<ffffffff816a2c2d>] ?
system_call_fastpath+0x1a/0x1f
Sep 5 15:13:14 Server kernel: [112195.631398] handlers:
Sep 5 15:13:14 Server kernel: [112195.631401] [<ffffffff814bc670>]
usb_hcd_irq
Sep 5 15:13:14 Server kernel: [112195.631462] [<ffffffffa0d65cb0>]
nv_kern_isr [nvidia]
Sep 5 15:13:14 Server kernel: [112195.631470] [<ffffffffa00640f0>]
rhine_interrupt [via_rhine]
Sep 5 15:13:14 Server kernel: [112195.631471] Disabling IRQ #16
The problem is massively compounded by the fact that irqpoll and
irqfixup options NO LONGER WORK AT ALL (
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/855199 ).
No matter if you switch to Nouveau, diff kernel, or other drivers, the
problem remains is varying severity. Again; logical if there is a
problem with the kernel interrupt handling itself.
So here's the kicker. It is easy to resolve! By forcing a restart of
the interrupt handlers the system INSTANTLY comes back to 100%
functional life:
root@Server:~# service network-manager restart
My theory (for what it's worth; I have programmed assembly for 30
years) is that there is a multi-threading fault somewhere, which
causes the kernel to miss an interrupt, or to miss allocating it.
The one thing they have in common though: Shared interrupts (usually
16) and LOAD on that interrupt (USB (KB+MS), VGA, ETH) on high speed
machines.
I have created a keyboard shortcut that does the service restart and
this works perfectly 100% of the time. If any dev needs more info,
contact me.
Just to prove a point: Same machine on win7 works perfectly.
Michael
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