* Re: Bug report for kernel v4.15-rc8+
[not found] ` <1437097118.2114098.1628689870926.JavaMail.zimbra@email.it>
@ 2021-08-11 14:20 ` Thomas Gleixner
2021-09-24 10:23 ` blinkin
0 siblings, 1 reply; 5+ messages in thread
From: Thomas Gleixner @ 2021-08-11 14:20 UTC (permalink / raw)
To: blinkin; +Cc: linux-kernel, Rafael J. Wysocki, Len Brown, linux-acpi
On Wed, Aug 11 2021 at 15:51, blinkin@email.it wrote:
> 1) You're booting with an out of tree module
>
> Uninstalled virtualbox, reproduced same behavior without the module.
> dmesg outputs attached with and without the workaround
> (dmesg_novboxdrv_clean.txt and dmesg_novboxdrv_irqaffinity0.txt)
Ok.
> 2) Please provide information what is consuming 90% of a CPU
>
> top shows a kworker process consistently at 50% without the
> workaround, 60% with the workaround. No significant activity amounts
> from other processes. Sometimes that 50% is split between two
> kworker processes for a short time. CPU core #0 activity is a
> constant 60% without the workaround, 90% with the workaround
That's broken. /proc/interrupts gives some hint:
1) Stock kernel
> CPU0 CPU1 CPU2 CPU3
> 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> 1: 0 0 0 9 IR-IO-APIC 1-edge i8042
> 8: 0 1 0 0 IR-IO-APIC 8-edge rtc0
> 9: 0 923411 0 0 IR-IO-APIC 9-fasteoi acpi
900k ACPI interrupts right after boot
> CPU0 CPU1 CPU2 CPU3
> 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> 1: 0 0 0 11 IR-IO-APIC 1-edge i8042
> 8: 0 1 0 0 IR-IO-APIC 8-edge rtc0
> 9: 0 4869059 0 0 IR-IO-APIC 9-fasteoi acpi
One minute later it's 4.8M
With affinity forced to CPU0 it's even more:
> CPU0 CPU1 CPU2 CPU3
> 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> 1: 9 0 0 0 IR-IO-APIC 1-edge i8042
> 8: 1 0 0 0 IR-IO-APIC 8-edge rtc0
> 9: 7576456 0 0 0 IR-IO-APIC 9-fasteoi acpi
7.5M right after boot
> CPU0 CPU1 CPU2 CPU3
> 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> 1: 11 0 0 0 IR-IO-APIC 1-edge i8042
> 8: 1 0 0 0 IR-IO-APIC 8-edge rtc0
> 9: 10992420 0 0 0 IR-IO-APIC 9-fasteoi acpi
10.9M after one minute. Though the delta between right after boot and 1
minute later is in the same ballpark.
Cc'ed the ACPI people for clues.
Thanks,
tglx
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: Bug report for kernel v4.15-rc8+
2021-08-11 14:20 ` Bug report for kernel v4.15-rc8+ Thomas Gleixner
@ 2021-09-24 10:23 ` blinkin
0 siblings, 0 replies; 5+ messages in thread
From: blinkin @ 2021-09-24 10:23 UTC (permalink / raw)
To: Thomas Gleixner; +Cc: linux-kernel, Rafael J. Wysocki, Len Brown, linux-acpi
hello, any news on this?
----- Messaggio originale -----
Da: "Thomas Gleixner" <tglx@linutronix.de>
A: blinkin@email.it
Cc: "linux-kernel" <linux-kernel@vger.kernel.org>, "Rafael J. Wysocki" <rafael@kernel.org>, "Len Brown" <lenb@kernel.org>, linux-acpi@vger.kernel.org
Inviato: Mercoledì, 11 agosto 2021 16:20:41
Oggetto: Re: Bug report for kernel v4.15-rc8+
On Wed, Aug 11 2021 at 15:51, blinkin@email.it wrote:
> 1) You're booting with an out of tree module
>
> Uninstalled virtualbox, reproduced same behavior without the module.
> dmesg outputs attached with and without the workaround
> (dmesg_novboxdrv_clean.txt and dmesg_novboxdrv_irqaffinity0.txt)
Ok.
> 2) Please provide information what is consuming 90% of a CPU
>
> top shows a kworker process consistently at 50% without the
> workaround, 60% with the workaround. No significant activity amounts
> from other processes. Sometimes that 50% is split between two
> kworker processes for a short time. CPU core #0 activity is a
> constant 60% without the workaround, 90% with the workaround
That's broken. /proc/interrupts gives some hint:
1) Stock kernel
> CPU0 CPU1 CPU2 CPU3
> 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> 1: 0 0 0 9 IR-IO-APIC 1-edge i8042
> 8: 0 1 0 0 IR-IO-APIC 8-edge rtc0
> 9: 0 923411 0 0 IR-IO-APIC 9-fasteoi acpi
900k ACPI interrupts right after boot
> CPU0 CPU1 CPU2 CPU3
> 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> 1: 0 0 0 11 IR-IO-APIC 1-edge i8042
> 8: 0 1 0 0 IR-IO-APIC 8-edge rtc0
> 9: 0 4869059 0 0 IR-IO-APIC 9-fasteoi acpi
One minute later it's 4.8M
With affinity forced to CPU0 it's even more:
> CPU0 CPU1 CPU2 CPU3
> 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> 1: 9 0 0 0 IR-IO-APIC 1-edge i8042
> 8: 1 0 0 0 IR-IO-APIC 8-edge rtc0
> 9: 7576456 0 0 0 IR-IO-APIC 9-fasteoi acpi
7.5M right after boot
> CPU0 CPU1 CPU2 CPU3
> 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> 1: 11 0 0 0 IR-IO-APIC 1-edge i8042
> 8: 1 0 0 0 IR-IO-APIC 8-edge rtc0
> 9: 10992420 0 0 0 IR-IO-APIC 9-fasteoi acpi
10.9M after one minute. Though the delta between right after boot and 1
minute later is in the same ballpark.
Cc'ed the ACPI people for clues.
Thanks,
tglx
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Bug report for kernel v4.15-rc8+
@ 2021-12-17 13:31 blinkin
0 siblings, 0 replies; 5+ messages in thread
From: blinkin @ 2021-12-17 13:31 UTC (permalink / raw)
To: Thomas Gleixner; +Cc: linux-kernel, Rafael J. Wysocki, Len Brown, linux-acpi
hello, any news on this?
----- Messaggio originale -----
Da: "Thomas Gleixner" <tglx@linutronix.de>
A: blinkin@email.it
Cc: "linux-kernel" <linux-kernel@vger.kernel.org>, "Rafael J. Wysocki" <rafael@kernel.org>, "Len Brown" <lenb@kernel.org>, linux-acpi@vger.kernel.org
Inviato: Mercoledì, 11 agosto 2021 16:20:41
Oggetto: Re: Bug report for kernel v4.15-rc8+
On Wed, Aug 11 2021 at 15:51, blinkin@email.it wrote:
> 1) You're booting with an out of tree module
>
> Uninstalled virtualbox, reproduced same behavior without the module.
> dmesg outputs attached with and without the workaround
> (dmesg_novboxdrv_clean.txt and dmesg_novboxdrv_irqaffinity0.txt)
Ok.
> 2) Please provide information what is consuming 90% of a CPU
>
> top shows a kworker process consistently at 50% without the
> workaround, 60% with the workaround. No significant activity amounts
> from other processes. Sometimes that 50% is split between two
> kworker processes for a short time. CPU core #0 activity is a
> constant 60% without the workaround, 90% with the workaround
That's broken. /proc/interrupts gives some hint:
1) Stock kernel
> CPU0 CPU1 CPU2 CPU3
> 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> 1: 0 0 0 9 IR-IO-APIC 1-edge i8042
> 8: 0 1 0 0 IR-IO-APIC 8-edge rtc0
> 9: 0 923411 0 0 IR-IO-APIC 9-fasteoi acpi
900k ACPI interrupts right after boot
> CPU0 CPU1 CPU2 CPU3
> 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> 1: 0 0 0 11 IR-IO-APIC 1-edge i8042
> 8: 0 1 0 0 IR-IO-APIC 8-edge rtc0
> 9: 0 4869059 0 0 IR-IO-APIC 9-fasteoi acpi
One minute later it's 4.8M
With affinity forced to CPU0 it's even more:
> CPU0 CPU1 CPU2 CPU3
> 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> 1: 9 0 0 0 IR-IO-APIC 1-edge i8042
> 8: 1 0 0 0 IR-IO-APIC 8-edge rtc0
> 9: 7576456 0 0 0 IR-IO-APIC 9-fasteoi acpi
7.5M right after boot
> CPU0 CPU1 CPU2 CPU3
> 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> 1: 11 0 0 0 IR-IO-APIC 1-edge i8042
> 8: 1 0 0 0 IR-IO-APIC 8-edge rtc0
> 9: 10992420 0 0 0 IR-IO-APIC 9-fasteoi acpi
10.9M after one minute. Though the delta between right after boot and 1
minute later is in the same ballpark.
Cc'ed the ACPI people for clues.
Thanks,
tglx
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: Bug report for kernel v4.15-rc8+
@ 2022-06-10 9:52 blinkin
2022-06-10 13:17 ` Rafael J. Wysocki
0 siblings, 1 reply; 5+ messages in thread
From: blinkin @ 2022-06-10 9:52 UTC (permalink / raw)
To: Thomas Gleixner; +Cc: linux-kernel, Rafael J. Wysocki, Len Brown, linux-acpi
hello, any news on this?
----- Messaggio originale -----
Da: "Thomas Gleixner" <tglx@linutronix.de>
A: blinkin@email.it
Cc: "linux-kernel" <linux-kernel@vger.kernel.org>, "Rafael J. Wysocki" <rafael@kernel.org>, "Len Brown" <lenb@kernel.org>, linux-acpi@vger.kernel.org
Inviato: Mercoledì, 11 agosto 2021 16:20:41
Oggetto: Re: Bug report for kernel v4.15-rc8+
On Wed, Aug 11 2021 at 15:51, blinkin@email.it wrote:
> 1) You're booting with an out of tree module
>
> Uninstalled virtualbox, reproduced same behavior without the module.
> dmesg outputs attached with and without the workaround
> (dmesg_novboxdrv_clean.txt and dmesg_novboxdrv_irqaffinity0.txt)
Ok.
> 2) Please provide information what is consuming 90% of a CPU
>
> top shows a kworker process consistently at 50% without the
> workaround, 60% with the workaround. No significant activity amounts
> from other processes. Sometimes that 50% is split between two
> kworker processes for a short time. CPU core #0 activity is a
> constant 60% without the workaround, 90% with the workaround
That's broken. /proc/interrupts gives some hint:
1) Stock kernel
> CPU0 CPU1 CPU2 CPU3
> 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> 1: 0 0 0 9 IR-IO-APIC 1-edge i8042
> 8: 0 1 0 0 IR-IO-APIC 8-edge rtc0
> 9: 0 923411 0 0 IR-IO-APIC 9-fasteoi acpi
900k ACPI interrupts right after boot
> CPU0 CPU1 CPU2 CPU3
> 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> 1: 0 0 0 11 IR-IO-APIC 1-edge i8042
> 8: 0 1 0 0 IR-IO-APIC 8-edge rtc0
> 9: 0 4869059 0 0 IR-IO-APIC 9-fasteoi acpi
One minute later it's 4.8M
With affinity forced to CPU0 it's even more:
> CPU0 CPU1 CPU2 CPU3
> 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> 1: 9 0 0 0 IR-IO-APIC 1-edge i8042
> 8: 1 0 0 0 IR-IO-APIC 8-edge rtc0
> 9: 7576456 0 0 0 IR-IO-APIC 9-fasteoi acpi
7.5M right after boot
> CPU0 CPU1 CPU2 CPU3
> 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> 1: 11 0 0 0 IR-IO-APIC 1-edge i8042
> 8: 1 0 0 0 IR-IO-APIC 8-edge rtc0
> 9: 10992420 0 0 0 IR-IO-APIC 9-fasteoi acpi
10.9M after one minute. Though the delta between right after boot and 1
minute later is in the same ballpark.
Cc'ed the ACPI people for clues.
Thanks,
tglx
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: Bug report for kernel v4.15-rc8+
2022-06-10 9:52 blinkin
@ 2022-06-10 13:17 ` Rafael J. Wysocki
0 siblings, 0 replies; 5+ messages in thread
From: Rafael J. Wysocki @ 2022-06-10 13:17 UTC (permalink / raw)
To: blinkin
Cc: Thomas Gleixner, linux-kernel, Rafael J. Wysocki, Len Brown, linux-acpi
On Fri, Jun 10, 2022 at 11:52 AM <blinkin@email.it> wrote:
>
> hello, any news on this?
>
> ----- Messaggio originale -----
> Da: "Thomas Gleixner" <tglx@linutronix.de>
> A: blinkin@email.it
> Cc: "linux-kernel" <linux-kernel@vger.kernel.org>, "Rafael J. Wysocki" <rafael@kernel.org>, "Len Brown" <lenb@kernel.org>, linux-acpi@vger.kernel.org
> Inviato: Mercoledì, 11 agosto 2021 16:20:41
> Oggetto: Re: Bug report for kernel v4.15-rc8+
>
> On Wed, Aug 11 2021 at 15:51, blinkin@email.it wrote:
> > 1) You're booting with an out of tree module
> >
> > Uninstalled virtualbox, reproduced same behavior without the module.
> > dmesg outputs attached with and without the workaround
> > (dmesg_novboxdrv_clean.txt and dmesg_novboxdrv_irqaffinity0.txt)
>
> Ok.
>
> > 2) Please provide information what is consuming 90% of a CPU
> >
> > top shows a kworker process consistently at 50% without the
> > workaround, 60% with the workaround. No significant activity amounts
> > from other processes. Sometimes that 50% is split between two
> > kworker processes for a short time. CPU core #0 activity is a
> > constant 60% without the workaround, 90% with the workaround
>
> That's broken. /proc/interrupts gives some hint:
>
> 1) Stock kernel
>
> > CPU0 CPU1 CPU2 CPU3
> > 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> > 1: 0 0 0 9 IR-IO-APIC 1-edge i8042
> > 8: 0 1 0 0 IR-IO-APIC 8-edge rtc0
> > 9: 0 923411 0 0 IR-IO-APIC 9-fasteoi acpi
>
> 900k ACPI interrupts right after boot
>
> > CPU0 CPU1 CPU2 CPU3
> > 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> > 1: 0 0 0 11 IR-IO-APIC 1-edge i8042
> > 8: 0 1 0 0 IR-IO-APIC 8-edge rtc0
> > 9: 0 4869059 0 0 IR-IO-APIC 9-fasteoi acpi
>
> One minute later it's 4.8M
>
> With affinity forced to CPU0 it's even more:
>
> > CPU0 CPU1 CPU2 CPU3
> > 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> > 1: 9 0 0 0 IR-IO-APIC 1-edge i8042
> > 8: 1 0 0 0 IR-IO-APIC 8-edge rtc0
> > 9: 7576456 0 0 0 IR-IO-APIC 9-fasteoi acpi
>
> 7.5M right after boot
>
> > CPU0 CPU1 CPU2 CPU3
> > 0: 10 0 0 0 IR-IO-APIC 2-edge timer
> > 1: 11 0 0 0 IR-IO-APIC 1-edge i8042
> > 8: 1 0 0 0 IR-IO-APIC 8-edge rtc0
> > 9: 10992420 0 0 0 IR-IO-APIC 9-fasteoi acpi
>
> 10.9M after one minute. Though the delta between right after boot and 1
> minute later is in the same ballpark.
>
> Cc'ed the ACPI people for clues.
Looks like a GPE storm to me.
I would look into /sys/firmware/acpi/interrupts/* for hints.
^ permalink raw reply [flat|nested] 5+ messages in thread
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[not found] ` <1437097118.2114098.1628689870926.JavaMail.zimbra@email.it>
2021-08-11 14:20 ` Bug report for kernel v4.15-rc8+ Thomas Gleixner
2021-09-24 10:23 ` blinkin
2021-12-17 13:31 blinkin
2022-06-10 9:52 blinkin
2022-06-10 13:17 ` Rafael J. Wysocki
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