Re: strange keyboard lag after suspend testing
Hi! > >> > >No, it is not keyboard rate. Keyboard lags during normal typing, > >> > >sometimes letters come in groups of two or so... > >> > > >> > I might start looking at embedded controller changes and switches. If > >> > ACPI misbehaves that could starve keyboard controller... But you > >> > said > >> > >> Mouse _seems_ okay, but I'm not sure if I'd notice lag there. > >> > >> > that mouse is OK... Hmm, what happens if you load evbug and type while > >> > watching syslog. Do you observe the same delays? > >> > >> Hmm, seems that it only happens in X... so maybe it is some strange > >> scheduling artefact? > >> > >> Hmm, something is wrong here: > >> > >> On console, I get expected 4-5 ticks a second. In x in gnome-terminal, > >> I get this: > > > > It gets weirder: I killed some tasks and now: (on unloaded system > > running X, notice that top latency was ~1sec at 33:09). > > > > [EMAIL PROTECTED]:~# while true ; do echo -n . ; sleep .2; date; done > > .Tue Mar 20 17:33:07 CET 2007 > > .Tue Mar 20 17:33:07 CET 2007 > > .Tue Mar 20 17:33:08 CET 2007 > > .Tue Mar 20 17:33:08 CET 2007 > > .Tue Mar 20 17:33:08 CET 2007 > > .Tue Mar 20 17:33:08 CET 2007 > > .Tue Mar 20 17:33:09 CET 2007 > > .Tue Mar 20 17:33:10 CET 2007 > > .Tue Mar 20 17:33:10 CET 2007 > > .Tue Mar 20 17:33:10 CET 2007 > > .Tue Mar 20 17:33:10 CET 2007 > > .Tue Mar 20 17:33:10 CET 2007 > > .Tue Mar 20 17:33:11 CET 2007 > > .Tue Mar 20 17:33:11 CET 2007 > > .Tue Mar 20 17:33:11 CET 2007 > > .Tue Mar 20 17:33:12 CET 2007 > > .Tue Mar 20 17:33:12 CET 2007 > > > > As soon as I load the cpu up with while1, machine starts to behave. > > > > When I turn on bluetooth (USB), ACPI can no longer use C3, and machine > > starts to behave. Hmm? > > When the CPU is in C3 the TSC and LAPIC (IIRC) are stopped, sounds like > the problem is here. Maybe after resume kernel fails to fall back to a > "safe" clocksource. Notice that problem is _not_ easily reproducible :-(. One suspend is not enough to trigger it. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: strange keyboard lag after suspend testing
Adding Thomas Gleixner to CC Pavel Machek <[EMAIL PROTECTED]> ha scritto: > Hi! > >> > >> > I was testing suspend in 2.6.21-rc4 a lot, and now... machine feels >> > >> > like someone added 50..100msec delay somewhere in keyboard >> > >> > handling. Mouse does not seem affected. /proc/interrupts seem to >> > >> > increase as they should, for both keyboard and mouse. Can someone >> > >> > reproduce it? Any ideas how to debug it? >> > >> >> > >> Probably just asking the obvious: >> > >> it's not a trivial "failed to re-configure repeat rate upon resume" >> > >> (which one could rule out by running "kbdrate" again) >> > >> but a lag in some interrupt handler or somewhere else deeper, right? >> > > >> > >No, it is not keyboard rate. Keyboard lags during normal typing, >> > >sometimes letters come in groups of two or so... >> > >> > I might start looking at embedded controller changes and switches. If >> > ACPI misbehaves that could starve keyboard controller... But you >> > said >> >> Mouse _seems_ okay, but I'm not sure if I'd notice lag there. >> >> > that mouse is OK... Hmm, what happens if you load evbug and type while >> > watching syslog. Do you observe the same delays? >> >> Hmm, seems that it only happens in X... so maybe it is some strange >> scheduling artefact? >> >> Hmm, something is wrong here: >> >> On console, I get expected 4-5 ticks a second. In x in gnome-terminal, >> I get this: > > It gets weirder: I killed some tasks and now: (on unloaded system > running X, notice that top latency was ~1sec at 33:09). > > [EMAIL PROTECTED]:~# while true ; do echo -n . ; sleep .2; date; done > .Tue Mar 20 17:33:07 CET 2007 > .Tue Mar 20 17:33:07 CET 2007 > .Tue Mar 20 17:33:08 CET 2007 > .Tue Mar 20 17:33:08 CET 2007 > .Tue Mar 20 17:33:08 CET 2007 > .Tue Mar 20 17:33:08 CET 2007 > .Tue Mar 20 17:33:09 CET 2007 > .Tue Mar 20 17:33:10 CET 2007 > .Tue Mar 20 17:33:10 CET 2007 > .Tue Mar 20 17:33:10 CET 2007 > .Tue Mar 20 17:33:10 CET 2007 > .Tue Mar 20 17:33:10 CET 2007 > .Tue Mar 20 17:33:11 CET 2007 > .Tue Mar 20 17:33:11 CET 2007 > .Tue Mar 20 17:33:11 CET 2007 > .Tue Mar 20 17:33:12 CET 2007 > .Tue Mar 20 17:33:12 CET 2007 > > As soon as I load the cpu up with while1, machine starts to behave. > > When I turn on bluetooth (USB), ACPI can no longer use C3, and machine > starts to behave. Hmm? When the CPU is in C3 the TSC and LAPIC (IIRC) are stopped, sounds like the problem is here. Maybe after resume kernel fails to fall back to a "safe" clocksource. Luca -- Inquietudine sintetica Solo, davanti all'ignoto Tienimi stretto a te - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: strange keyboard lag after suspend testing
On Tuesday, 20 March 2007 17:38, Pavel Machek wrote: > Hi! > > > > >> > I was testing suspend in 2.6.21-rc4 a lot, and now... machine feels > > > >> > like someone added 50..100msec delay somewhere in keyboard > > > >> > handling. Mouse does not seem affected. /proc/interrupts seem to > > > >> > increase as they should, for both keyboard and mouse. Can someone > > > >> > reproduce it? Any ideas how to debug it? > > > >> > > > >> Probably just asking the obvious: > > > >> it's not a trivial "failed to re-configure repeat rate upon resume" > > > >> (which one could rule out by running "kbdrate" again) > > > >> but a lag in some interrupt handler or somewhere else deeper, right? > > > > > > > >No, it is not keyboard rate. Keyboard lags during normal typing, > > > >sometimes letters come in groups of two or so... > > > > > > I might start looking at embedded controller changes and switches. If > > > ACPI misbehaves that could starve keyboard controller... But you > > > said > > > > Mouse _seems_ okay, but I'm not sure if I'd notice lag there. > > > > > that mouse is OK... Hmm, what happens if you load evbug and type while > > > watching syslog. Do you observe the same delays? > > > > Hmm, seems that it only happens in X... so maybe it is some strange > > scheduling artefact? > > > > Hmm, something is wrong here: > > > > On console, I get expected 4-5 ticks a second. In x in gnome-terminal, > > I get this: > > It gets weirder: I killed some tasks and now: (on unloaded system > running X, notice that top latency was ~1sec at 33:09). > > [EMAIL PROTECTED]:~# while true ; do echo -n . ; sleep .2; date; done > .Tue Mar 20 17:33:07 CET 2007 > .Tue Mar 20 17:33:07 CET 2007 > .Tue Mar 20 17:33:08 CET 2007 > .Tue Mar 20 17:33:08 CET 2007 > .Tue Mar 20 17:33:08 CET 2007 > .Tue Mar 20 17:33:08 CET 2007 > .Tue Mar 20 17:33:09 CET 2007 > .Tue Mar 20 17:33:10 CET 2007 > .Tue Mar 20 17:33:10 CET 2007 > .Tue Mar 20 17:33:10 CET 2007 > .Tue Mar 20 17:33:10 CET 2007 > .Tue Mar 20 17:33:10 CET 2007 > .Tue Mar 20 17:33:11 CET 2007 > .Tue Mar 20 17:33:11 CET 2007 > .Tue Mar 20 17:33:11 CET 2007 > .Tue Mar 20 17:33:12 CET 2007 > .Tue Mar 20 17:33:12 CET 2007 > > As soon as I load the cpu up with while1, machine starts to behave. > > When I turn on bluetooth (USB), ACPI can no longer use C3, and machine > starts to behave. Hmm? Smells like a cpufreq problem or something related. Greetings, Rafael - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: strange keyboard lag after suspend testing
Hi! > > >> > I was testing suspend in 2.6.21-rc4 a lot, and now... machine feels > > >> > like someone added 50..100msec delay somewhere in keyboard > > >> > handling. Mouse does not seem affected. /proc/interrupts seem to > > >> > increase as they should, for both keyboard and mouse. Can someone > > >> > reproduce it? Any ideas how to debug it? > > >> > > >> Probably just asking the obvious: > > >> it's not a trivial "failed to re-configure repeat rate upon resume" > > >> (which one could rule out by running "kbdrate" again) > > >> but a lag in some interrupt handler or somewhere else deeper, right? > > > > > >No, it is not keyboard rate. Keyboard lags during normal typing, > > >sometimes letters come in groups of two or so... > > > > I might start looking at embedded controller changes and switches. If > > ACPI misbehaves that could starve keyboard controller... But you > > said > > Mouse _seems_ okay, but I'm not sure if I'd notice lag there. > > > that mouse is OK... Hmm, what happens if you load evbug and type while > > watching syslog. Do you observe the same delays? > > Hmm, seems that it only happens in X... so maybe it is some strange > scheduling artefact? > > Hmm, something is wrong here: > > On console, I get expected 4-5 ticks a second. In x in gnome-terminal, > I get this: It gets weirder: I killed some tasks and now: (on unloaded system running X, notice that top latency was ~1sec at 33:09). [EMAIL PROTECTED]:~# while true ; do echo -n . ; sleep .2; date; done .Tue Mar 20 17:33:07 CET 2007 .Tue Mar 20 17:33:07 CET 2007 .Tue Mar 20 17:33:08 CET 2007 .Tue Mar 20 17:33:08 CET 2007 .Tue Mar 20 17:33:08 CET 2007 .Tue Mar 20 17:33:08 CET 2007 .Tue Mar 20 17:33:09 CET 2007 .Tue Mar 20 17:33:10 CET 2007 .Tue Mar 20 17:33:10 CET 2007 .Tue Mar 20 17:33:10 CET 2007 .Tue Mar 20 17:33:10 CET 2007 .Tue Mar 20 17:33:10 CET 2007 .Tue Mar 20 17:33:11 CET 2007 .Tue Mar 20 17:33:11 CET 2007 .Tue Mar 20 17:33:11 CET 2007 .Tue Mar 20 17:33:12 CET 2007 .Tue Mar 20 17:33:12 CET 2007 As soon as I load the cpu up with while1, machine starts to behave. When I turn on bluetooth (USB), ACPI can no longer use C3, and machine starts to behave. Hmm? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: strange keyboard lag after suspend testing
Hi! > >> > I was testing suspend in 2.6.21-rc4 a lot, and now... machine feels > >> > like someone added 50..100msec delay somewhere in keyboard > >> > handling. Mouse does not seem affected. /proc/interrupts seem to > >> > increase as they should, for both keyboard and mouse. Can someone > >> > reproduce it? Any ideas how to debug it? > >> > >> Probably just asking the obvious: > >> it's not a trivial "failed to re-configure repeat rate upon resume" > >> (which one could rule out by running "kbdrate" again) > >> but a lag in some interrupt handler or somewhere else deeper, right? > > > >No, it is not keyboard rate. Keyboard lags during normal typing, > >sometimes letters come in groups of two or so... > > I might start looking at embedded controller changes and switches. If > ACPI misbehaves that could starve keyboard controller... But you > said Mouse _seems_ okay, but I'm not sure if I'd notice lag there. > that mouse is OK... Hmm, what happens if you load evbug and type while > watching syslog. Do you observe the same delays? Hmm, seems that it only happens in X... so maybe it is some strange scheduling artefact? Hmm, something is wrong here: On console, I get expected 4-5 ticks a second. In x in gnome-terminal, I get this: [EMAIL PROTECTED]:~# while true ; do echo -n . ; sleep .2; date; done .Tue Mar 20 17:28:34 CET 2007 .Tue Mar 20 17:28:35 CET 2007 .Tue Mar 20 17:28:35 CET 2007 .Tue Mar 20 17:28:35 CET 2007 .Tue Mar 20 17:28:36 CET 2007 .Tue Mar 20 17:28:36 CET 2007 .Tue Mar 20 17:28:36 CET 2007 .Tue Mar 20 17:28:36 CET 2007 .Tue Mar 20 17:28:37 CET 2007 .Tue Mar 20 17:28:37 CET 2007 .Tue Mar 20 17:28:37 CET 2007 .Tue Mar 20 17:28:37 CET 2007 .Tue Mar 20 17:28:38 CET 2007 .Tue Mar 20 17:28:38 CET 2007 .Tue Mar 20 17:28:38 CET 2007 .Tue Mar 20 17:28:39 CET 2007 .Tue Mar 20 17:28:39 CET 2007 .Tue Mar 20 17:28:39 CET 2007 .Tue Mar 20 17:28:39 CET 2007 .Tue Mar 20 17:28:39 CET 2007 .Tue Mar 20 17:28:40 CET 2007 .Tue Mar 20 17:28:40 CET 2007 .Tue Mar 20 17:28:40 CET 2007 .Tue Mar 20 17:28:40 CET 2007 .Tue Mar 20 17:28:41 CET 2007 .Tue Mar 20 17:28:41 CET 2007 .Tue Mar 20 17:28:41 CET 2007 .Tue Mar 20 17:28:42 CET 2007 .Tue Mar 20 17:28:42 CET 2007 So sorry for false alarm, it is not keyboard related, it is just very very strange. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: strange keyboard lag after suspend testing
On 3/20/07, Pavel Machek <[EMAIL PROTECTED]> wrote: Hi! > > I was testing suspend in 2.6.21-rc4 a lot, and now... machine feels > > like someone added 50..100msec delay somewhere in keyboard > > handling. Mouse does not seem affected. /proc/interrupts seem to > > increase as they should, for both keyboard and mouse. Can someone > > reproduce it? Any ideas how to debug it? > > Probably just asking the obvious: > it's not a trivial "failed to re-configure repeat rate upon resume" > (which one could rule out by running "kbdrate" again) > but a lag in some interrupt handler or somewhere else deeper, right? No, it is not keyboard rate. Keyboard lags during normal typing, sometimes letters come in groups of two or so... I might start looking at embedded controller changes and switches. If ACPI misbehaves that could starve keyboard controller... But you said that mouse is OK... Hmm, what happens if you load evbug and type while watching syslog. Do you observe the same delays? -- Dmitry - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: strange keyboard lag after suspend testing
Hi! > > I was testing suspend in 2.6.21-rc4 a lot, and now... machine feels > > like someone added 50..100msec delay somewhere in keyboard > > handling. Mouse does not seem affected. /proc/interrupts seem to > > increase as they should, for both keyboard and mouse. Can someone > > reproduce it? Any ideas how to debug it? > > Probably just asking the obvious: > it's not a trivial "failed to re-configure repeat rate upon resume" > (which one could rule out by running "kbdrate" again) > but a lag in some interrupt handler or somewhere else deeper, right? No, it is not keyboard rate. Keyboard lags during normal typing, sometimes letters come in groups of two or so... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: strange keyboard lag after suspend testing
Hi, On Tue, Mar 20, 2007 at 04:33:32PM +0100, Pavel Machek wrote: > Hi! > > I was testing suspend in 2.6.21-rc4 a lot, and now... machine feels > like someone added 50..100msec delay somewhere in keyboard > handling. Mouse does not seem affected. /proc/interrupts seem to > increase as they should, for both keyboard and mouse. Can someone > reproduce it? Any ideas how to debug it? Probably just asking the obvious: it's not a trivial "failed to re-configure repeat rate upon resume" (which one could rule out by running "kbdrate" again) but a lag in some interrupt handler or somewhere else deeper, right? Andreas Mohr - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
strange keyboard lag after suspend testing
Hi! I was testing suspend in 2.6.21-rc4 a lot, and now... machine feels like someone added 50..100msec delay somewhere in keyboard handling. Mouse does not seem affected. /proc/interrupts seem to increase as they should, for both keyboard and mouse. Can someone reproduce it? Any ideas how to debug it? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
