Ruben Puettmann wrote:
> cat /proc/interrupts
> CPU0
> 0: 655923 IO-APIC-edge timer
> 1: 22221 IO-APIC-edge keyboard
> 2: 0 XT-PIC cascade
> 8: 4 IO-APIC-edge rtc
> 9: 0 IO-APIC-level acpi
> 14: 33084 IO-APIC-edge ide0
> 15: 3 IO-APIC-edge ide1
> 18: 690660829 IO-APIC-level aic7xxx, es1371
> 19: 686559334 IO-APIC-level bttv, eth0
> 20: 683012480 IO-APIC-level ehci_hcd, usb-ohci
> 22: 115606 IO-APIC-level usb-ohci
> NMI: 0
> LOC: 655895
> ERR: 0
> MIS: 0
Hi, i am seeing the same behaviour of the Epox 8RDA3+ on
2.4.22-pre5-vanilla.
Please note that only level-APICs seem to be affected.
We don't see these high interrupt rates anymore when APIC is disabled in
the BIOS.
I also noted that the POST LED on the board flips between 94 and 96
which it does not under WinXP where FF is displayed.
I have also a SATA Drive attached to the internal controller and under
pre5 the box freezes if i do any serious amount of disk thoughput - for
example using bonnie++. Maybe this is somehow related to this interrupt
problem.
I experience freezes with current 2.5 kernels too.
WinXP is installed on the SATA Drive and rock stable, so this actually
seems not to be a hardware problem per se.
> vmtstat 2
> procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
> r b swpd free buff cache si so bi bo in cs us sy id wa
> 0 0 0 680320 35816 278576 0 0 30 66 1995 313 38 4 58 0
> 0 0 0 680316 35816 278576 0 0 0 0 322131 7 0 0 100 0
> Is this normal?
If it were i would be desperate to hear why for my most frequented
nameserver (>300queries/s) hardly even does 1000 interrupts/s. ;)
waves,
Stefan