> my irq's: > > cat /proc/interrupts > ? ? ? ? ? ?CPU0 ? ? ? > ? 0: ? 15819314 ? ? ? ? ?XT-PIC ?timer > ? 1: ? ? ?15630 ? ? ? ? ?XT-PIC ?i8042 > ? 2: ? ? ? ? ?0 ? ? ? ? ?XT-PIC ?cascade > ? 3: ? ? ? ? ?0 ? ? ? ? ?XT-PIC ?ohci_hcd:usb3 > ? 4: ? ? ? ? ?0 ? ? ? ? ?XT-PIC ?ohci_hcd:usb2 > ? 5: ? ?3769675 ? ? ? ? ?XT-PIC ?ehci_hcd:usb1, yenta, yenta, hdsp, > ohci1394, eth0 8: ? ? ? ? ?1 ? ? ? ? ?XT-PIC ?rtc > ?10: ? ? ?13339 ? ? ? ? ?XT-PIC ?SiS SI7012, SiS SI7013 Modem > ?12: ? ? ? 9093 ? ? ? ? ?XT-PIC ?i8042 > ?14: ? ? ?39815 ? ? ? ? ?XT-PIC ?ide0 > ?15: ? ? 141222 ? ? ? ? ?XT-PIC ?ide1 > NMI: ? ? ? ? ?0 > ERR: ? ? ? ? ?1 interesting. I'm also interested in decreasing latencies for my USB cards, and my interrupts read as follows: 0: 1620247 XT-PIC timer 1: 4669 XT-PIC i8042 2: 0 XT-PIC cascade 8: 2 XT-PIC rtc 11: 1636542 XT-PIC Intel 82801CA-ICH3, Intel 82801CA-ICH3 Modem, uhci_hcd:usb1, uhci_hcd:usb2,eth0, yenta, yenta, ohci1394, nvidia 12: 114 XT-PIC i8042 14: 52911 XT-PIC ide0 NMI: 0 LOC: 0 ERR: 0 MIS: 0 11 really seems to be overcrowded, so I wonder if I could use another IRQ for the USB bus. Unfortunately it's a notebook, so changing card slots isn't possible. Best regards ce