athlon x2 + 2.6.14 + SMP = fast clock

athlon x2 + 2.6.14 + SMP = fast clock

[Christopher Mulcahy]

I am running 2.6.14 SMP on an dual-core athlon x2 3800.
The system clock runs at roughly twice normal speed.

'cat /proc/interrupts' returns:
           CPU0       CPU1       
  0:   30834589   31107050    IO-APIC-edge  timer
  1:        267      72633    IO-APIC-edge  i8042
  8:          0          0    IO-APIC-edge  rtc
 12:       8662    2216469    IO-APIC-edge  i8042
 15:      43599   10919362    IO-APIC-edge  ide1
 17:       1577     423629   IO-APIC-level  libata
 18:      61263   47314795   IO-APIC-level  ehci_hcd:usb1,
ohci_hcd:usb2, ohci_hcd:usb3
 19:       2026     485190   IO-APIC-level  eth0
 20:         54      14118   IO-APIC-level  ATI IXP
 21:          0          2   IO-APIC-level  acpi, ohci1394
NMI:       2611       3571 
LOC:   30969789   30969781 
ERR:        146
MIS:          0


On my other SMP systems ( admittedly 4-way 2.4.30 ) timer interrupts are
processed only by CPU0.

Perhaps unrelated, my kernel log is filled with these messages:
Nov 8 00:44:19 jones kernel: [301738.837187] APIC error on CPU0: 40(40)
Nov 8 00:44:19 jones kernel: [301738.849596] APIC error on CPU1: 40(40)
Nov 8 02:35:25 jones kernel: [305067.785826] APIC error on CPU0: 40(40)
Nov 8 02:35:25 jones kernel: [305067.808330] APIC error on CPU1: 40(40)
Nov 8 03:34:47 jones kernel: [306846.571532] APIC error on CPU0: 40(40)
Nov 8 03:34:47 jones kernel: [306846.598922] APIC error on CPU1: 40(40)
Nov 8 03:50:47 jones kernel: [307325.974012] APIC error on CPU0: 40(40)
Nov 8 03:50:47 jones kernel: [307326.002707] APIC error on CPU1: 40(40)
Nov 8 03:50:47 jones kernel: [307325.983997] APIC error on CPU0: 40(40)
Nov 8 03:50:47 jones kernel: [307326.012689] APIC error on CPU1: 40(40)

Not sure if this is relevant:
http://leaf.dragonflybsd.org/mailarchive/commits/2005-11/msg00038.html


If you want dmesg, .config or other, contact me off list, I am not
subscribed.

Chris

Re: athlon x2 + 2.6.14 + SMP = fast clock

[john stultz]

On Tue, 2005-11-08 at 15:40 -0500, Christopher Mulcahy wrote:
> I am running 2.6.14 SMP on an dual-core athlon x2 3800.
> The system clock runs at roughly twice normal speed.

Is this a new regression or did the problem occur with 2.6.13 or older
kernels?

Would you mind opening a kernel bug and attaching your dmesg and config?

http://bugzilla.kernel.org


Also try booting w/ "idle=poll" to see if that doesn't clear up the
issue.

thanks
-john

Re: athlon x2 + 2.6.14 + SMP = fast clock

[john stultz]

On Tue, 2005-11-08 at 20:02 -0500, Christopher Mulcahy wrote:
> On Tue, 2005-11-08 at 13:38 -0800, john stultz wrote:
> > On Tue, 2005-11-08 at 15:40 -0500, Christopher Mulcahy wrote:
> > > I am running 2.6.14 SMP on an dual-core athlon x2 3800.
> > > The system clock runs at roughly twice normal speed.
> > 
> > Is this a new regression or did the problem occur with 2.6.13 or older
> > kernels?
> This is a new-machine.
> The only other kernel it has seen is the distro-install-kernel ( 2.6.12
> uni-processor (ubuntu-5.10) )  ( this kernel does not have a problem,
> but it is not SMP )
> 
> I will try to find time to build 2.4.13 and 2.4.12 SMP kernels with the
> ~same config to see if they have the same problem. ( I presume I could
> then attach these findings to the original bugzilla report? )

There are a few similar sounding bugs out there:
If its an ATI chipset, check out 
http://bugzilla.kernel.org/show_bug.cgi?id=3927

If its an nvidia chipset, check out
http://bugzilla.kernel.org/show_bug.cgi?id=3341


> > Would you mind opening a kernel bug and attaching your dmesg and config?
> > 
> > http://bugzilla.kernel.org
> > 
> will do.

Please tag me as the owner when you do.

> > 
> > Also try booting w/ "idle=poll" to see if that doesn't clear up the
> > issue.
> > 
> Tried that without results.

Bummer. Your box may not boot, but trying noapic might help as well.

thanks
-john

Re: athlon x2 + 2.6.14 + SMP = fast clock

[Christopher Mulcahy]

On Tue, 2005-11-08 at 13:38 -0800, john stultz wrote:
> On Tue, 2005-11-08 at 15:40 -0500, Christopher Mulcahy wrote:
> > I am running 2.6.14 SMP on an dual-core athlon x2 3800.
> > The system clock runs at roughly twice normal speed.
> 
> Is this a new regression or did the problem occur with 2.6.13 or older
> kernels?
This is a new-machine.
The only other kernel it has seen is the distro-install-kernel ( 2.6.12
uni-processor (ubuntu-5.10) )  ( this kernel does not have a problem,
but it is not SMP )

I will try to find time to build 2.4.13 and 2.4.12 SMP kernels with the
~same config to see if they have the same problem. ( I presume I could
then attach these findings to the original bugzilla report? )

> 
> Would you mind opening a kernel bug and attaching your dmesg and config?
> 
> http://bugzilla.kernel.org
> 
will do.

> 
> Also try booting w/ "idle=poll" to see if that doesn't clear up the
> issue.
> 
Tried that without results.

> thanks
> -john
> 
> 
> 
> 

Re: athlon x2 + 2.6.14 + SMP = fast clock

[Akira Tsukamoto]

On Tue, 08 Nov 2005 14:59:25 -0800
john stultz <johnstul@us.ibm.com> mentioned:
> On Tue, 2005-11-08 at 20:02 -0500, Christopher Mulcahy wrote:
> > On Tue, 2005-11-08 at 13:38 -0800, john stultz wrote:
> > > On Tue, 2005-11-08 at 15:40 -0500, Christopher Mulcahy wrote:
> > > > I am running 2.6.14 SMP on an dual-core athlon x2 3800.
> > > > The system clock runs at roughly twice normal speed.
> > > 
> > > Is this a new regression or did the problem occur with 2.6.13 or older
> > > kernels?
> > This is a new-machine.
> > The only other kernel it has seen is the distro-install-kernel ( 2.6.12
> > uni-processor (ubuntu-5.10) )  ( this kernel does not have a problem,
> > but it is not SMP )
> > 
> > I will try to find time to build 2.4.13 and 2.4.12 SMP kernels with the
> > ~same config to see if they have the same problem. ( I presume I could
> > then attach these findings to the original bugzilla report? )
> 
> There are a few similar sounding bugs out there:
> If its an ATI chipset, check out 
> http://bugzilla.kernel.org/show_bug.cgi?id=3927
> 
> If its an nvidia chipset, check out
> http://bugzilla.kernel.org/show_bug.cgi?id=3341


My machine's clock runs about 2X from normal speed.
Could you try my patch which I just posted a hour ago?
http://marc.theaimsgroup.com/?l=linux-kernel&m=113249769027262&w=2

The patch will detect whether IO-APCI timer interupt is generated too fast 
and try to use a legacy i8259A IRQ instead.

It might help. It also worked on 2.4.31 kernel for me.



> 
> 
> > > Would you mind opening a kernel bug and attaching your dmesg and config?
> > > 
> > > http://bugzilla.kernel.org
> > > 
> > will do.
> 
> Please tag me as the owner when you do.
> 
> > > 
> > > Also try booting w/ "idle=poll" to see if that doesn't clear up the
> > > issue.
> > > 
> > Tried that without results.
> 
> Bummer. Your box may not boot, but trying noapic might help as well.
> 
> thanks
> -john
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
> 

-- 
Akira Tsukamoto <akira-t@suna-asobi.com, at541@columbia.edu>

Re: athlon x2 + 2.6.14 + SMP = fast clock

[Christopher Mulcahy]

I am using arch amd64.

I applied this patch.

http://bugzilla.kernel.org/attachment.cgi?id=6061&action=view

It applies to 2.6.14.2 so long as you remove the static declaration of
'int disable_timer_pin_1'

It appears to have solved my problem.

Chris

On Mon, 2005-11-21 at 03:12 +0900, Akira Tsukamoto wrote:
> On Tue, 08 Nov 2005 14:59:25 -0800
> john stultz <johnstul@us.ibm.com> mentioned:
> > On Tue, 2005-11-08 at 20:02 -0500, Christopher Mulcahy wrote:
> > > On Tue, 2005-11-08 at 13:38 -0800, john stultz wrote:
> > > > On Tue, 2005-11-08 at 15:40 -0500, Christopher Mulcahy wrote:
> > > > > I am running 2.6.14 SMP on an dual-core athlon x2 3800.
> > > > > The system clock runs at roughly twice normal speed.
> > > > 
> > > > Is this a new regression or did the problem occur with 2.6.13 or older
> > > > kernels?
> > > This is a new-machine.
> > > The only other kernel it has seen is the distro-install-kernel ( 2.6.12
> > > uni-processor (ubuntu-5.10) )  ( this kernel does not have a problem,
> > > but it is not SMP )
> > > 
> > > I will try to find time to build 2.4.13 and 2.4.12 SMP kernels with the
> > > ~same config to see if they have the same problem. ( I presume I could
> > > then attach these findings to the original bugzilla report? )
> > 
> > There are a few similar sounding bugs out there:
> > If its an ATI chipset, check out 
> > http://bugzilla.kernel.org/show_bug.cgi?id=3927
> > 
> > If its an nvidia chipset, check out
> > http://bugzilla.kernel.org/show_bug.cgi?id=3341
> 
> 
> My machine's clock runs about 2X from normal speed.
> Could you try my patch which I just posted a hour ago?
> http://marc.theaimsgroup.com/?l=linux-kernel&m=113249769027262&w=2
> 
> The patch will detect whether IO-APCI timer interupt is generated too fast 
> and try to use a legacy i8259A IRQ instead.
> 
> It might help. It also worked on 2.4.31 kernel for me.
> 
> 
> 
> > 
> > 
> > > > Would you mind opening a kernel bug and attaching your dmesg and config?
> > > > 
> > > > http://bugzilla.kernel.org
> > > > 
> > > will do.
> > 
> > Please tag me as the owner when you do.
> > 
> > > > 
> > > > Also try booting w/ "idle=poll" to see if that doesn't clear up the
> > > > issue.
> > > > 
> > > Tried that without results.
> > 
> > Bummer. Your box may not boot, but trying noapic might help as well.
> > 
> > thanks
> > -john
> > 
> > -
> > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> > Please read the FAQ at  http://www.tux.org/lkml/
> > 
> 

Re: athlon x2 + 2.6.14 + SMP = fast clock

[Arkadiusz Miskiewicz]

On Monday 21 November 2005 02:48, Christopher Mulcahy wrote:
> I am using arch amd64.
>
> I applied this patch.
>
> http://bugzilla.kernel.org/attachment.cgi?id=6061&action=view
>
> It applies to 2.6.14.2 so long as you remove the static declaration of
> 'int disable_timer_pin_1'
>
> It appears to have solved my problem.

I wonder is this is x86_64 only problem?

I'm having the same problem on dual xeon 1.8GHz i686 with HT enabled, kernel 
2.6.14.2-4smp. Clock runs twice fast. Previously I was using 2.6.11 kernel 
with no such problem.

cmdline is: acpi=ht nmi_watchdog=1

Unfortunately I can't do any testing right now on this machine but I'll try 
acpi_skip_timer_override cmdline option as soon as I can.

> Chris

00:00.0 Host bridge: Intel Corporation E7500 Memory Controller Hub (rev 03)
00:02.0 PCI bridge: Intel Corporation E7500/E7501 Hub Interface B PCI-to-PCI 
Bridge (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801CA/CAM USB (Hub #1) (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 42)
00:1f.0 ISA bridge: Intel Corporation 82801CA LPC Interface Controller (rev 
02)
00:1f.1 IDE interface: Intel Corporation 82801CA Ultra ATA Storage Controller 
(rev 02)
00:1f.3 SMBus: Intel Corporation 82801CA/CAM SMBus Controller (rev 02)
01:01.0 Ethernet controller: Intel Corporation 82557/8/9 [Ethernet Pro 100] 
(rev 10)
01:02.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27)
02:1c.0 PIC: Intel Corporation 82870P2 P64H2 I/OxAPIC (rev 03)
02:1d.0 PCI bridge: Intel Corporation 82870P2 P64H2 Hub PCI Bridge (rev 03)
02:1e.0 PIC: Intel Corporation 82870P2 P64H2 I/OxAPIC (rev 03)
02:1f.0 PCI bridge: Intel Corporation 82870P2 P64H2 Hub PCI Bridge (rev 03)
03:03.0 Fibre Channel: QLogic Corp. QLA2312 Fibre Channel Adapter (rev 02)
04:01.0 Ethernet controller: Intel Corporation 82545EM Gigabit Ethernet 
Controller (Copper) (rev 01)

# cat /proc/interrupts
           CPU0       CPU1       CPU2       CPU3
  0:   47938745          0          0          0    IO-APIC-edge  timer
  2:          0          0          0          0          XT-PIC  cascade
  4:      41666          0          0          0    IO-APIC-edge  serial
  8:          3          0          0          0    IO-APIC-edge  rtc
145:          0          0          0          0   IO-APIC-level  
uhci_hcd:usb1
153:   49053282          0          0          0   IO-APIC-level  eth0
169:    3839290          0          0          0   IO-APIC-level  qla2300
177:   45129167          0          0          0   IO-APIC-level  eth1
NMI:   47939763   47939734   47939732   47939731
LOC:   47943502   47944012   47944469   47944277
ERR:          0
MIS:          0


-- 
Arkadiusz Miśkiewicz                    PLD/Linux Team
http://www.t17.ds.pwr.wroc.pl/~misiek/  http://ftp.pld-linux.org/

Re: athlon x2 + 2.6.14 + SMP = fast clock

[Akira Tsukamoto]

On Mon, 21 Nov 2005 10:28:03 +0100
Arkadiusz Miskiewicz <arekm@pld-linux.org> mentioned:
> 
> I wonder is this is x86_64 only problem?
> 
> I'm having the same problem on dual xeon 1.8GHz i686 with HT enabled, kernel 
> 2.6.14.2-4smp. Clock runs twice fast. Previously I was using 2.6.11 kernel 
> with no such problem.

My laptop, clock runs twice fast but has PentiumM, so it shouldn't be 
x86_64 specific.


> 
> cmdline is: acpi=ht nmi_watchdog=1
> 
> Unfortunately I can't do any testing right now on this machine but I'll try 
> acpi_skip_timer_override cmdline option as soon as I can.
> 
> > Chris

-- 
Akira Tsukamoto <akira-t@s9.dion.ne.jp> <>