Hello,
I have identified that the disks that are shared on ide2, ide3 do funny
things when both are being heavily used (dma_expiry), this is an older driver versions
but I have experienced it before with a lot newer driver, and a bios adjustment
previously fixed a similar issue, so that may be what is needed in this case also,
I am not sure how they fixed it, but I suspect that the setup the interrupt
to not be shared.
I doubt that your suspicions are justified.
I have a large number of machines and under heavy loads all
seem to duplicate the issue, and it always happens with the disks on ide2/ide3,
never on the disk connected to ide4.
BTW, you never named your particular IDE hardware.
-
CPU0 CPU1 CPU2 CPU3
0: 56616921 5359998 7002142 938817 XT-PIC timer
1: 8 88 96 0 IO-APIC-edge i8042
2: 0 0 0 0 XT-PIC cascade
4: 2091 100 208 2477 IO-APIC-edge serial
8: 0 0 0 0 IO-APIC-edge rtc
9: 0 0 0 0 IO-APIC-level acpi
20: 0 0 0 0 IO-APIC-level ehci_hcd
21: 0 950 401419 414482 IO-APIC-level ide4, ohci_hcd
22: 1165 1704243 576247 6796 IO-APIC-level ide2, ide3
47: 65971 0 0 0 IO-APIC-level eth0
NMI: 1 1 1 1
LOC: 69904264 69877733 69879541 69901903
ERR: 0
MIS: 105
MBR, Sergei