View Single Post
Old 03-18-10, 05:42 AM   #12
bengershon
Registered User
 
Join Date: Nov 2004
Posts: 15
Default Re: Strange problem after hardware upgrade

Quote:
Originally Posted by zeb View Post
Someone has reported system freezes after upgrading from Fedora 10 to Fedora 12: http://www.nvnews.net/vbulletin/showthread.php?t=149056

Could your problem be similar?
I don't know. My problem was clearly a case of interrupts clashing. Once that was discovered all that was required was to find a solution.

Here is the new /proc/interrupts display (with MSI enabled). What a difference that made!

Code:
           CPU0       CPU1       CPU2       CPU3       CPU4       CPU5       CPU6       CPU7       
  0:        125          0          0        116          0          0          0          0   IO-APIC-edge      timer
  1:          0          0          0          1          0          0          0          0   IO-APIC-edge      i8042
  9:          0          0          0          2          0          0          0          0   IO-APIC-fasteoi   acpi
 16:       8312          0      29783          0          0          0          0        195   IO-APIC-fasteoi   uhci_hcd:usb3, uhci_hcd:usb9, nvidia
 17:          0        286         21          0          0          0          0        236   IO-APIC-fasteoi   firewire_ohci
 18:        408         63         33          0          0          0          0          0   IO-APIC-fasteoi   ahci, ahci, ehci_hcd:usb1, uhci_hcd:usb5, uhci_hcd:usb8
 19:          0          0          0          0          0          0          0          0   IO-APIC-fasteoi   uhci_hcd:usb7
 21:       1006          0          0          0          0      12687       8671       6399   IO-APIC-fasteoi   uhci_hcd:usb4
 23:          0          0          0          0          0          2          0          0   IO-APIC-fasteoi   ehci_hcd:usb2, uhci_hcd:usb6
 24:   34694612          0          0          0          0          0          0          0  HPET_MSI-edge      hpet2
 25:          0   34710997          0          0          0          0          0          0  HPET_MSI-edge      hpet3
 26:          0          0   34707210          0          0          0          0          0  HPET_MSI-edge      hpet4
 27:          0          0          0   34679288          0          0          0          0  HPET_MSI-edge      hpet5
 28:          0          0          0          0   34687757          0          0          0  HPET_MSI-edge      hpet6
 34:          0          0      33564       7785          0      39422     184157          0   PCI-MSI-edge      ahci
 35:          0          0          0          0        431     156119          0          0   PCI-MSI-edge      eth1
 36:          0          0          0          0      20938      18402          0          0   PCI-MSI-edge    
 37:       2427         63          0          0          0          0       1103        449   PCI-MSI-edge      hda_intel
NMI:          0          0          0          0          0          0          0          0   Non-maskable interrupts
LOC:        545        585        495        407        317   34685840   34708754   34684188   Local timer interrupts
SPU:          0          0          0          0          0          0          0          0   Spurious interrupts
PMI:          0          0          0          0          0          0          0          0   Performance monitoring interrupts
PND:          0          0          0          0          0          0          0          0   Performance pending work
RES:      18556      21393      11385     114236       3908       3158       3820       2361   Rescheduling interrupts
CAL:        461        387        514        399        466        502        479        432   Function call interrupts
TLB:       1162       1382       1963        897       3200       3602       3851       3048   TLB shootdowns
TRM:          0          0          0          0          0          0          0          0   Thermal event interrupts
THR:          0          0          0          0          0          0          0          0   Threshold APIC interrupts
MCE:          0          0          0          0          0          0          0          0   Machine check exceptions
MCP:        117        117        117        117        117        117        117        117   Machine check polls
ERR:          7
MIS:          0
I have to say that the system has now been working reliably for 9 hours and I am quite sure that the problem has been solved. Many thanks to all those who offered suggestions and advice - it is most appreciated.

Last edited by bengershon; 03-18-10 at 06:20 AM. Reason: added more information
bengershon is offline   Reply With Quote