Re: high system load when using i915kms
On Tue, 12 Mar 2013 19:57:30 +0200 Konstantin Belousov wrote: On Tue, Mar 12, 2013 at 04:53:25PM +, Max Brazhnikov wrote: On Fri, 08 Mar 2013 11:38:13 -0800 Kevin Oberman wrote: On Fri, Mar 8, 2013 at 10:03 AM, Max Brazhnikov m...@freebsd.org wrote: PID USERNAME THR PRI NICE SIZERES STATE C TIME WCPU COMMAND 11 root 2 155 ki31 0K32K RUN 1 4:16 120.35% idle 12 root 18 -84- 0K 288K WAIT0 0:57 76.34% intr I've got this after second boot today, although I couldn't reproduce it yesterday even after ten attempts. But sometimes it's quite nasty and I have to reboot the system several times to get rid of it. Max So the issue is that that the interrupts from one or another of the USB devices has exploded from near zero to around 40K when the kernel module is loaded? Exactly. A couple of possibly irrelevant questions. Do you normally manually load the module? I did not research the issue, but when I manually load the module I was seeing things just grind to a halt. If I started Gnome, the module was loaded automatically by X, and things worked. No I don't usually load it manually, I was just wondering what causes the interrupt storm. Why loading the Intel KMS module would cause a massive increase in interrupts on a USB interface completely baffles me, but I suspect some sort of race is going on when the module is pre-loaded. It happens if I allow X to load the module also, the problem is not due to pre-loading. As I said earlier, change in the userspace cannot change the interrupt routing. What could happen (with very low probability) is that some kind of display interrupt get aliased to the non-msi one. Since it is unacknowledged, it causes the storm on the legacy irq line. But I never saw this on G[M]4*. Just as the blind shot, try to set hw.drm.msi=0 in the loader.conf or using the kenv, before the i915kms module is loaded. Nice shot, it does make the difference! I've never seen the problem after adding hw.drm.msi=0 to the loader.conf. Max ___ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to freebsd-usb-unsubscr...@freebsd.org
Re: high system load when using i915kms
On Fri, 08 Mar 2013 11:38:13 -0800 Kevin Oberman wrote: On Fri, Mar 8, 2013 at 10:03 AM, Max Brazhnikov m...@freebsd.org wrote: PID USERNAME THR PRI NICE SIZERES STATE C TIME WCPU COMMAND 11 root 2 155 ki31 0K32K RUN 1 4:16 120.35% idle 12 root 18 -84- 0K 288K WAIT0 0:57 76.34% intr I've got this after second boot today, although I couldn't reproduce it yesterday even after ten attempts. But sometimes it's quite nasty and I have to reboot the system several times to get rid of it. Max So the issue is that that the interrupts from one or another of the USB devices has exploded from near zero to around 40K when the kernel module is loaded? Exactly. A couple of possibly irrelevant questions. Do you normally manually load the module? I did not research the issue, but when I manually load the module I was seeing things just grind to a halt. If I started Gnome, the module was loaded automatically by X, and things worked. No I don't usually load it manually, I was just wondering what causes the interrupt storm. Why loading the Intel KMS module would cause a massive increase in interrupts on a USB interface completely baffles me, but I suspect some sort of race is going on when the module is pre-loaded. It happens if I allow X to load the module also, the problem is not due to pre-loading. Max ___ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to freebsd-usb-unsubscr...@freebsd.org
Re: high system load when using i915kms
On Tue, Mar 12, 2013 at 04:53:25PM +, Max Brazhnikov wrote: On Fri, 08 Mar 2013 11:38:13 -0800 Kevin Oberman wrote: On Fri, Mar 8, 2013 at 10:03 AM, Max Brazhnikov m...@freebsd.org wrote: PID USERNAME THR PRI NICE SIZERES STATE C TIME WCPU COMMAND 11 root 2 155 ki31 0K32K RUN 1 4:16 120.35% idle 12 root 18 -84- 0K 288K WAIT0 0:57 76.34% intr I've got this after second boot today, although I couldn't reproduce it yesterday even after ten attempts. But sometimes it's quite nasty and I have to reboot the system several times to get rid of it. Max So the issue is that that the interrupts from one or another of the USB devices has exploded from near zero to around 40K when the kernel module is loaded? Exactly. A couple of possibly irrelevant questions. Do you normally manually load the module? I did not research the issue, but when I manually load the module I was seeing things just grind to a halt. If I started Gnome, the module was loaded automatically by X, and things worked. No I don't usually load it manually, I was just wondering what causes the interrupt storm. Why loading the Intel KMS module would cause a massive increase in interrupts on a USB interface completely baffles me, but I suspect some sort of race is going on when the module is pre-loaded. It happens if I allow X to load the module also, the problem is not due to pre-loading. As I said earlier, change in the userspace cannot change the interrupt routing. What could happen (with very low probability) is that some kind of display interrupt get aliased to the non-msi one. Since it is unacknowledged, it causes the storm on the legacy irq line. But I never saw this on G[M]4*. Just as the blind shot, try to set hw.drm.msi=0 in the loader.conf or using the kenv, before the i915kms module is loaded. pgpfLAkdIvcYS.pgp Description: PGP signature
Re: high system load when using i915kms
On Thu, 07 Mar 2013 16:47:23 +0200 Konstantin Belousov wrote: On Wed, Mar 06, 2013 at 10:56:52AM +, Max Brazhnikov wrote: On Wed, 6 Mar 2013 08:15:37 +0200 Konstantin Belousov wrote: On Tue, Mar 05, 2013 at 12:24:51PM +, Max Brazhnikov wrote: Hi, I've switched recently to new xorg and kms driver. Sometimes after booting my system (9.1-STABLE #0 r245741 amd64) shows high load: interrupt total rate irq1: atkbd0 612 0 irq9: acpi0 3693 1 irq12: psm0 7512 2 irq16: uhci0 uhci3 377172955 144069 irq20: hpet0 2923357 1116 irq23: uhci1 ehci1 47432 18 irq256: hdac0 80799 30 irq257: alc0 78474 29 irq258: iwn0 19994 7 irq259: ahci0 100016 38 irq260: vgapci031250 11 Total 380466094 145327 I've never seen this with old xorg. The problem is not always reproducible, but it's enough just to load i915kms module without staring X to trigger it. Any idea? So what is the complain ? Do you meaning that loading i915kms causes the spike in the interrupt rate on the irq16 line ? I suspect it since the only change was update to newer xorg. Do you mean that the same kernel was kept, and only usermode components upgraded ? Correct. The kernel and world were built from r245741 more than month ago. I used prebuilt Xorg packages from latest experimental ports, so the changes in the system are minimal. This is plain impossible to cause the effect you described. What is the graphics part and the south bridge you are using ? Show the pciconf -lvc output. http://people.freebsd.org/~makc/pciconf.output I have exactly the same GM45 chipset in my laptop. BTW, is the vmstat output you demonstrated in the first message, was for the system with running X ? I am asking about the presence of the rendering activity on the display, which would explain the significant count of the interrupts from GPU. Yes, it was under KDE session, however the problem can be observe with plain X and xterm or even without them: # cat test.sh #!/bin/sh vmstat -i kldload i915kms sleep 10 vmstat -i xinit sleep 10 vmstat -i interrupt total rate irq1: atkbd0 169 3 irq9: acpi0 72 1 irq12: psm0 24 0 irq16: uhci0 uhci325 0 irq19: ehci0 uhci2 2 0 irq20: hpet0 20351407 irq23: uhci1 ehci195 1 irq256: hdac0 71 1 irq257: alc0 347 6 irq258: iwn01624 32 irq259: ahci0 4095 81 Total 26875537 interrupt total rate irq1: atkbd0 169 2 irq9: acpi0 72 1 irq12: psm0 24 0 irq16: uhci0 uhci3 1533470 24733 irq19: ehci0 uhci2 2 0 irq20: hpet0 33165534 irq23: uhci1 ehci195 1 irq256: hdac0 71 1 irq257: alc0 509 8 irq258: iwn02090 33 irq259: ahci0 4273 68 irq260: vgapci01 0 Total1573941 25386 interrupt total rate irq1: atkbd0 187 2 irq9: acpi0 94 1 irq12: psm0 24 0 irq16: uhci0 uhci3 3056916 42457 irq19: ehci0 uhci2 2 0 irq20: hpet0 44423616 irq23: uhci1 ehci195 1 irq256: hdac0 71 0 irq257: alc0 634 8 irq258: iwn02494 34 irq259: ahci0 4772 66 irq260: vgapci0 10 0 Total3109722 43190 PID USERNAME THR PRI NICE SIZERES STATE C TIME WCPU COMMAND 11 root 2 155 ki31 0K32K RUN 1 4:16 120.35% idle 12 root 18 -84- 0K 288K WAIT0 0:57 76.34% intr I've got this after second boot today, although I couldn't reproduce it yesterday even after ten
Re: high system load when using i915kms
On Fri, Mar 8, 2013 at 10:03 AM, Max Brazhnikov m...@freebsd.org wrote: On Thu, 07 Mar 2013 16:47:23 +0200 Konstantin Belousov wrote: On Wed, Mar 06, 2013 at 10:56:52AM +, Max Brazhnikov wrote: On Wed, 6 Mar 2013 08:15:37 +0200 Konstantin Belousov wrote: On Tue, Mar 05, 2013 at 12:24:51PM +, Max Brazhnikov wrote: Hi, I've switched recently to new xorg and kms driver. Sometimes after booting my system (9.1-STABLE #0 r245741 amd64) shows high load: interrupt total rate irq1: atkbd0 612 0 irq9: acpi0 3693 1 irq12: psm0 7512 2 irq16: uhci0 uhci3 377172955 144069 irq20: hpet0 2923357 1116 irq23: uhci1 ehci1 47432 18 irq256: hdac0 80799 30 irq257: alc0 78474 29 irq258: iwn0 19994 7 irq259: ahci0 100016 38 irq260: vgapci031250 11 Total 380466094 145327 I've never seen this with old xorg. The problem is not always reproducible, but it's enough just to load i915kms module without staring X to trigger it. Any idea? So what is the complain ? Do you meaning that loading i915kms causes the spike in the interrupt rate on the irq16 line ? I suspect it since the only change was update to newer xorg. Do you mean that the same kernel was kept, and only usermode components upgraded ? Correct. The kernel and world were built from r245741 more than month ago. I used prebuilt Xorg packages from latest experimental ports, so the changes in the system are minimal. This is plain impossible to cause the effect you described. What is the graphics part and the south bridge you are using ? Show the pciconf -lvc output. http://people.freebsd.org/~makc/pciconf.output I have exactly the same GM45 chipset in my laptop. BTW, is the vmstat output you demonstrated in the first message, was for the system with running X ? I am asking about the presence of the rendering activity on the display, which would explain the significant count of the interrupts from GPU. Yes, it was under KDE session, however the problem can be observe with plain X and xterm or even without them: # cat test.sh #!/bin/sh vmstat -i kldload i915kms sleep 10 vmstat -i xinit sleep 10 vmstat -i interrupt total rate irq1: atkbd0 169 3 irq9: acpi0 72 1 irq12: psm0 24 0 irq16: uhci0 uhci325 0 irq19: ehci0 uhci2 2 0 irq20: hpet0 20351407 irq23: uhci1 ehci195 1 irq256: hdac0 71 1 irq257: alc0 347 6 irq258: iwn01624 32 irq259: ahci0 4095 81 Total 26875537 interrupt total rate irq1: atkbd0 169 2 irq9: acpi0 72 1 irq12: psm0 24 0 irq16: uhci0 uhci3 1533470 24733 irq19: ehci0 uhci2 2 0 irq20: hpet0 33165534 irq23: uhci1 ehci195 1 irq256: hdac0 71 1 irq257: alc0 509 8 irq258: iwn02090 33 irq259: ahci0 4273 68 irq260: vgapci01 0 Total1573941 25386 interrupt total rate irq1: atkbd0 187 2 irq9: acpi0 94 1 irq12: psm0 24 0 irq16: uhci0 uhci3 3056916 42457 irq19: ehci0 uhci2 2 0 irq20: hpet0 44423616 irq23: uhci1 ehci195 1 irq256: hdac0 71 0 irq257: alc0 634 8 irq258: iwn02494 34 irq259: ahci0 4772 66 irq260: vgapci0 10 0 Total3109722 43190 PID USERNAME THR PRI NICE SIZERES STATE C TIME WCPU COMMAND 11 root 2 155 ki31 0K32K RUN 1 4:16 120.35% idle 12
Re: Re: high system load when using i915kms
On Wed, Mar 06, 2013 at 10:56:52AM +, Max Brazhnikov wrote: On Wed, 6 Mar 2013 08:15:37 +0200 Konstantin Belousov wrote: On Tue, Mar 05, 2013 at 12:24:51PM +, Max Brazhnikov wrote: Hi, I've switched recently to new xorg and kms driver. Sometimes after booting my system (9.1-STABLE #0 r245741 amd64) shows high load: interrupt total rate irq1: atkbd0 612 0 irq9: acpi0 3693 1 irq12: psm0 7512 2 irq16: uhci0 uhci3 377172955 144069 irq20: hpet0 2923357 1116 irq23: uhci1 ehci1 47432 18 irq256: hdac0 80799 30 irq257: alc0 78474 29 irq258: iwn0 19994 7 irq259: ahci0 100016 38 irq260: vgapci031250 11 Total 380466094 145327 I've never seen this with old xorg. The problem is not always reproducible, but it's enough just to load i915kms module without staring X to trigger it. Any idea? So what is the complain ? Do you meaning that loading i915kms causes the spike in the interrupt rate on the irq16 line ? I suspect it since the only change was update to newer xorg. Do you mean that the same kernel was kept, and only usermode components upgraded ? This is plain impossible to cause the effect you described. What is the graphics part and the south bridge you are using ? Show the pciconf -lvc output. http://people.freebsd.org/~makc/pciconf.output I have exactly the same GM45 chipset in my laptop. BTW, is the vmstat output you demonstrated in the first message, was for the system with running X ? I am asking about the presence of the rendering activity on the display, which would explain the significant count of the interrupts from GPU. pgpCPq0wqZdOp.pgp Description: PGP signature
Re: Re: high system load when using i915kms
On Wed, 6 Mar 2013 08:15:37 +0200 Konstantin Belousov wrote: On Tue, Mar 05, 2013 at 12:24:51PM +, Max Brazhnikov wrote: Hi, I've switched recently to new xorg and kms driver. Sometimes after booting my system (9.1-STABLE #0 r245741 amd64) shows high load: interrupt total rate irq1: atkbd0 612 0 irq9: acpi0 3693 1 irq12: psm0 7512 2 irq16: uhci0 uhci3 377172955 144069 irq20: hpet0 2923357 1116 irq23: uhci1 ehci1 47432 18 irq256: hdac0 80799 30 irq257: alc0 78474 29 irq258: iwn0 19994 7 irq259: ahci0 100016 38 irq260: vgapci031250 11 Total 380466094 145327 I've never seen this with old xorg. The problem is not always reproducible, but it's enough just to load i915kms module without staring X to trigger it. Any idea? So what is the complain ? Do you meaning that loading i915kms causes the spike in the interrupt rate on the irq16 line ? I suspect it since the only change was update to newer xorg. What is the graphics part and the south bridge you are using ? Show the pciconf -lvc output. http://people.freebsd.org/~makc/pciconf.output Max ___ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to freebsd-usb-unsubscr...@freebsd.org
high system load when using i915kms
Hi, I've switched recently to new xorg and kms driver. Sometimes after booting my system (9.1-STABLE #0 r245741 amd64) shows high load: interrupt total rate irq1: atkbd0 612 0 irq9: acpi0 3693 1 irq12: psm0 7512 2 irq16: uhci0 uhci3 377172955 144069 irq20: hpet0 2923357 1116 irq23: uhci1 ehci1 47432 18 irq256: hdac0 80799 30 irq257: alc0 78474 29 irq258: iwn0 19994 7 irq259: ahci0 100016 38 irq260: vgapci031250 11 Total 380466094 145327 I've never seen this with old xorg. The problem is not always reproducible, but it's enough just to load i915kms module without staring X to trigger it. Any idea? Thanks, Max ___ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to freebsd-usb-unsubscr...@freebsd.org
Re: high system load when using i915kms
On Tue, Mar 05, 2013 at 12:24:51PM +, Max Brazhnikov wrote: Hi, I've switched recently to new xorg and kms driver. Sometimes after booting my system (9.1-STABLE #0 r245741 amd64) shows high load: interrupt total rate irq1: atkbd0 612 0 irq9: acpi0 3693 1 irq12: psm0 7512 2 irq16: uhci0 uhci3 377172955 144069 irq20: hpet0 2923357 1116 irq23: uhci1 ehci1 47432 18 irq256: hdac0 80799 30 irq257: alc0 78474 29 irq258: iwn0 19994 7 irq259: ahci0 100016 38 irq260: vgapci031250 11 Total 380466094 145327 I've never seen this with old xorg. The problem is not always reproducible, but it's enough just to load i915kms module without staring X to trigger it. Any idea? So what is the complain ? Do you meaning that loading i915kms causes the spike in the interrupt rate on the irq16 line ? What is the graphics part and the south bridge you are using ? Show the pciconf -lvc output. pgpINChZYyj9H.pgp Description: PGP signature
