* Re: 2.6.5, 2.6.6-rc2 sluggish interrupts
[not found] <E1BJOXM-0007zu-6H@andromeda>
@ 2004-05-19 19:19 ` Justin Pryzby
2004-05-19 19:24 ` Justin Pryzby
0 siblings, 1 reply; 6+ messages in thread
From: Justin Pryzby @ 2004-05-19 19:19 UTC (permalink / raw)
To: Peter Chubb; +Cc: JustinPryzby, linux-kernel
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The problem persists with 2.6.6 final, but get this: I was recompiling
with preempt disabled (which didn't do anything to solve the problem),
but during the compile, there were very few music skips / mouse skips.
Not sure what that could mean though..
Justin
On Fri, Apr 30, 2004 at 03:18:04AM +0000, Peter Chubb wrote:
> >>>>> 'Justin' == Justin Pryzby <justinpryzby@users.sourceforge.net> writes:
>
> Justin> --Q68bSM7Ycu6FN28Q Content-Type: text/plain; charset=us-ascii
> Justin> Content-Disposition: inline Content-Transfer-Encoding:
> Justin> quoted-printable
>
> Justin> It feels to me like it always happens when the disk is
> Justin> accessed (possibly just because I can _hear_ that), and it
> Justin> seems like it happens when the disk hasn't been used in a
> Justin> while.
>
> Try
> 1. booting with elevator=deadline
> 2. hdparm -u /dev/hda
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: 2.6.5, 2.6.6-rc2 sluggish interrupts
2004-05-19 19:19 ` 2.6.5, 2.6.6-rc2 sluggish interrupts Justin Pryzby
@ 2004-05-19 19:24 ` Justin Pryzby
2004-05-19 21:21 ` Justin Pryzby
0 siblings, 1 reply; 6+ messages in thread
From: Justin Pryzby @ 2004-05-19 19:24 UTC (permalink / raw)
To: Peter Chubb; +Cc: linux-kernel
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This also suffices to cease the skipping:
while true; do false; done;
I also see this, by the way:
May 19 15:15:51 andromeda kernel: psmouse.c: Mouse at
isa0060/serio1/input0 lost
synchronization, throwing 2 bytes away.
May 19 15:16:02 andromeda kernel: psmouse.c: Mouse at
isa0060/serio1/input0 lost
synchronization, throwing 1 bytes away.
May 19 15:16:03 andromeda kernel: psmouse.c: Mouse at
isa0060/serio1/input0 lost
synchronization, throwing 2 bytes away.
But these don't correlate with the skips, which frequently happen even
when there's no kernel log entry for the mouse. FWIW, that could be a
legitimate hardware problem, though it happens even when I'm using an
external mouse (laptop).
Justin
On Wed, May 19, 2004 at 03:19:00PM -0400, pryzbyj wrote:
> The problem persists with 2.6.6 final, but get this: I was recompiling
> with preempt disabled (which didn't do anything to solve the problem),
> but during the compile, there were very few music skips / mouse skips.
> Not sure what that could mean though..
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: 2.6.5, 2.6.6-rc2 sluggish interrupts
2004-05-19 19:24 ` Justin Pryzby
@ 2004-05-19 21:21 ` Justin Pryzby
2004-05-19 22:57 ` Peter Chubb
0 siblings, 1 reply; 6+ messages in thread
From: Justin Pryzby @ 2004-05-19 21:21 UTC (permalink / raw)
To: Peter Chubb; +Cc: linux-kernel
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Found a solution: disable cpufreq. I also saw these:
May 16 12:39:48 andromeda kernel: cpufreq: change failed with new_state
0 and result 3
May 16 14:59:13 andromeda kernel: cpufreq: change failed with new_state
0 and result 3
May 16 14:59:13 andromeda kernel: cpufreq: change failed with new_state
0 and result 3
Justin
On Wed, May 19, 2004 at 03:24:14PM -0400, pryzbyj wrote:
> This also suffices to cease the skipping:
>
> while true; do false; done;
>
> I also see this, by the way:
>
> May 19 15:15:51 andromeda kernel: psmouse.c: Mouse at
> isa0060/serio1/input0 lost
> synchronization, throwing 2 bytes away.
> May 19 15:16:02 andromeda kernel: psmouse.c: Mouse at
> isa0060/serio1/input0 lost
> synchronization, throwing 1 bytes away.
> May 19 15:16:03 andromeda kernel: psmouse.c: Mouse at
> isa0060/serio1/input0 lost
> synchronization, throwing 2 bytes away.
>
> But these don't correlate with the skips, which frequently happen even
> when there's no kernel log entry for the mouse. FWIW, that could be a
> legitimate hardware problem, though it happens even when I'm using an
> external mouse (laptop).
>
> Justin
>
> On Wed, May 19, 2004 at 03:19:00PM -0400, pryzbyj wrote:
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^ permalink raw reply [flat|nested] 6+ messages in thread
[parent not found: <689431378@toto.iv>]
* Re: 2.6.5, 2.6.6-rc2 sluggish interrupts
[not found] <689431378@toto.iv>
@ 2004-04-30 4:15 ` Peter Chubb
0 siblings, 0 replies; 6+ messages in thread
From: Peter Chubb @ 2004-04-30 4:15 UTC (permalink / raw)
To: Justin Pryzby; +Cc: linux-kernel
>>>>> "Justin" == Justin Pryzby <justinpryzby@users.sourceforge.net> writes:
Justin> --Q68bSM7Ycu6FN28Q Content-Type: text/plain; charset=us-ascii
Justin> Content-Disposition: inline Content-Transfer-Encoding:
Justin> quoted-printable
Justin> It feels to me like it always happens when the disk is
Justin> accessed (possibly just because I can _hear_ that), and it
Justin> seems like it happens when the disk hasn't been used in a
Justin> while.
Try
1. booting with elevator=deadline
2. hdparm -u /dev/hda
One of these might help.
Dr Peter Chubb http://www.gelato.unsw.edu.au peterc AT gelato.unsw.edu.au
The technical we do immediately, the political takes *forever*
^ permalink raw reply [flat|nested] 6+ messages in thread
* 2.6.5, 2.6.6-rc2 sluggish interrupts
@ 2004-04-21 18:24 Justin Pryzby
0 siblings, 0 replies; 6+ messages in thread
From: Justin Pryzby @ 2004-04-21 18:24 UTC (permalink / raw)
To: linux-kernel
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I noticed this first with Linux 2.6.5 (but not with 2.6.2) and also now
with 2.6.6-rc2. The machine responds very slugishly while excercizing
one interrupt when another interrupt happens. Ex. I'm circling the
mouse pointer around the screen, and suddenly the hard drive decides to
`sync`, or some such. The pointer then freezes for at least a
half-second. It affects the keyboard too. (Though, presumably, it
could also be a display issue). I notice myself losing alot of
keystrokes as a result of this (I don't know what that means about the
problem..) I don't know enough to say that this is about interrupts,
but take a look:
pryzbyj@andromeda:~$ cat /proc/interrupts
CPU0
0: 3835408 XT-PIC timer
1: 9797 XT-PIC i8042
2: 0 XT-PIC cascade
5: 0 XT-PIC Maestro3
7: 1 XT-PIC parport0
8: 4 XT-PIC rtc
9: 1 XT-PIC acpi
11: 310777 XT-PIC yenta, yenta, uhci_hcd, eth0, r128@PCI:1:0:0
12: 10454 XT-PIC i8042
14: 11802 XT-PIC ide0
15: 17 XT-PIC ide1
NMI: 0
LOC: 0
ERR: 0
MIS: 0
I don't recall seeing that r128@PCI:1:0:0 entry there before (I haven't
changed hardware, I've been using the console framebuffer for a while,
AGP, DRM have always been on). And it seems to be making lots of noise
(though I don't know that that's wrong). I do know there's a general
problem though - sometimes it feels like I'm using a remote machine when
I'm not.
It feels to me like it always happens when the disk is accessed
(possibly just because I can _hear_ that), and it seems like it happens
when the disk hasn't been used in a while.
Please Cc: me.
Justin
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[not found] <E1BJOXM-0007zu-6H@andromeda>
2004-05-19 19:19 ` 2.6.5, 2.6.6-rc2 sluggish interrupts Justin Pryzby
2004-05-19 19:24 ` Justin Pryzby
2004-05-19 21:21 ` Justin Pryzby
2004-05-19 22:57 ` Peter Chubb
[not found] <689431378@toto.iv>
2004-04-30 4:15 ` Peter Chubb
2004-04-21 18:24 Justin Pryzby
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