On 05/25/2011 07:48 PM, Emanuel Rumpf wrote: > 2011/5/25 Robin Gareus <robin@xxxxxxxxxx>: >> >> You need to add 'threadirqs' to the kernel-boot option to enable >> threaded IRQ handlers with 2.6.39. >> > Things have changed, I'm not quite sure how to do that these days. > Add it to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub ? ? ? Yes, but it depends on your bootloader and distro. I use GRUB_CMDLINE_LINUX="i915.modeset=1 threadirqs" in /etc/default/grub. run `sudo update-grub` after saving changes to that file. If you install the kernel as debian package the 'update-grub' part is taken care of by dpkg's postinst script. >> I'm waiting for feedback from Daniel about a 2.6.39 kernel for >> openDAW/64studio. Stay tuned. >> >> The .config I'm currently using successfully on i386 thinkpad X60s is: >> http://rg42.org/_media/wiki/kernel/config-2.6.39.gz >> > Thanks. > > There's a tool called irqbalance > Running that, is it still recommended with threadirqs ? I don't know. I do run irqbalance here; but it does not seem to have effect on hardware-irqs [anymore] (see dumps below). But I'm getting off-topic. There are no crackles nor xruns here with and without irqbalance. jackd2-svn-r4393, The UA-25 is on IRQ 18; Are your crackles gone with the 'threadirqs' option? robin # cat /proc/interrupts CPU0 CPU1 0: 278696424 6 IO-APIC-edge timer 1: 765597 0 IO-APIC-edge i8042 8: 1 0 IO-APIC-edge rtc0 9: 19624127 0 IO-APIC-fasteoi acpi 12: 9265100 0 IO-APIC-edge i8042 14: 2635256 4 IO-APIC-edge ata_piix 15: 0 0 IO-APIC-edge ata_piix 16: 1238945 0 IO-APIC-fasteoi yenta, uhci_hcd:usb2, i915@pci:0000:00:02.0 17: 6413 0 IO-APIC-fasteoi uhci_hcd:usb3, firewire_ohci 18: 2273102 2 IO-APIC-fasteoi uhci_hcd:usb4, mmc0 19: 7270696 23 IO-APIC-fasteoi ehci_hcd:usb1, uhci_hcd:usb5 40: 0 0 PCI-MSI-edge PCIe PME 41: 0 0 PCI-MSI-edge PCIe PME 42: 0 0 PCI-MSI-edge PCIe PME 43: 0 0 PCI-MSI-edge PCIe PME 44: 8880802 38 PCI-MSI-edge hda_intel 45: 20916424 16 PCI-MSI-edge iwl3945 NMI: 2647 2909 Non-maskable interrupts LOC: 77842296 233977838 Local timer interrupts SPU: 0 0 Spurious interrupts PMI: 2647 2909 Performance monitoring interrupts IWI: 0 0 IRQ work interrupts RES: 85016190 124517149 Rescheduling interrupts CAL: 332967 582697 Function call interrupts TLB: 849663 604581 TLB shootdowns TRM: 12 12 Thermal event interrupts THR: 0 0 Threshold APIC interrupts MCE: 0 0 Machine check exceptions MCP: 1144 1124 Machine check polls ERR: 0 MIS: 0 # cat /proc/softirqs CPU0 CPU1 HI: 71 0 TIMER: 78744168 77532112 NET_TX: 93266 813476 NET_RX: 104790 97888 BLOCK: 1482548 3411882 BLOCK_IOPOLL: 71 0 TASKLET: 10734408 19778443 SCHED: 4012801 4799134 HRTIMER: 215170 248879 RCU: 21928395 24010120 # /etc/init.d/rtirq status PID CLS RTPRIO NI PRI %CPU STAT COMMAND 970 FF 88 - 128 0.0 S irq/18-uhci_hcd 317 FF 84 - 124 0.2 S irq/44-hda_inte 610 FF 80 - 120 0.0 S irq/1-i8042 609 FF 79 - 119 0.0 S irq/12-i8042 159 FF 50 - 90 0.1 S irq/9-acpi 318 FF 50 - 90 0.0 S irq/18-mmc0 321 FF 50 - 90 0.0 S irq/16-i915@pci 322 FF 50 - 90 0.0 S irq/17-firewire 443 FF 50 - 90 0.0 S irq/40-PCIe PME 444 FF 50 - 90 0.0 S irq/41-PCIe PME 445 FF 50 - 90 0.0 S irq/42-PCIe PME 446 FF 50 - 90 0.0 S irq/43-PCIe PME 569 FF 50 - 90 0.0 S irq/14-ata_piix 570 FF 50 - 90 0.0 S irq/15-ata_piix 589 FF 50 - 90 0.0 S irq/16-yenta 929 FF 50 - 90 0.0 S irq/8-rtc0 963 FF 50 - 90 0.0 S irq/19-ehci_hcd 967 FF 50 - 90 0.0 S irq/16-uhci_hcd 969 FF 50 - 90 0.0 S irq/17-uhci_hcd 972 FF 50 - 90 0.0 S irq/19-uhci_hcd 29970 FF 50 - 90 0.5 S irq/45-iwl3945 3 TS - 0 19 0.1 S ksoftirqd/0 315 TS - 0 19 0.2 S ksoftirqd/1 3620 TS - -20 39 0.0 S< kvm-irqfd-clean 24746 TS - 0 19 0.0 S+ rtirq _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
