Hi, It's good to hear that things are more promising now.
The overall IRQ delta over 10 seconds (from your last results of interrupts_normal_xorg.log) look more promising - IRQ 0 is definitely not being saturated now, but it does appear that you system is busy somewhere causing ~7K rescheduling interrupts per second. CPU0 CPU1 0: 2597 2582 IO-APIC-edge timer 1: 0 0 IO-APIC-edge i8042 8: 4 3 IO-APIC-edge rtc 9: 18 16 IO-APIC-fasteoi acpi 12: 0 0 IO-APIC-edge i8042 14: 0 0 IO-APIC-edge libata 15: 0 0 IO-APIC-edge libata 16: 35 25 IO-APIC-fasteoi uhci_hcd:usb5, nvidia 17: 0 0 IO-APIC-fasteoi uhci_hcd:usb1 18: 0 0 IO-APIC-fasteoi uhci_hcd:usb2 19: 4 4 IO-APIC-fasteoi ehci_hcd:usb3 21: 1 1 IO-APIC-fasteoi ehci_hcd:usb4 22: 0 0 IO-APIC-fasteoi uhci_hcd:usb6, ohci1394, HDA Intel 23: 0 0 IO-APIC-fasteoi uhci_hcd:usb7 215: 384 410 PCI-MSI-edge iwl4965 216: 14 16 PCI-MSI-edge eth0 217: 3 2 PCI-MSI-edge ahci NMI: 0 0 Non-maskable interrupts LOC: 2110 1800 Local timer interrupts RES: 68628 75310 Rescheduling interrupts CAL: 0 0 function call interrupts TLB: 0 6 TLB shootdowns TRM: 0 0 Thermal event interrupts SPU: 0 0 Spurious interrupts ERR: 0 MIS: 0 Running vmstat 1 for ~15-30 seconds will give an idea of how busy the system is - primarily the context switches/second will be interesting to see. Colin -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs