On 22/02/2010, at 8:22 PM, Colin Yi wrote: > > Oliver Yang Wrote: >> Colin Yi wrote: >>> >>> Hi, >>> We found a hard hang on a HP x86 system installed snv_130. firstly I add >>> "set snooping=1" to /etc/system >>> to try to get a core dump file. but it doesn't work, the system hang more >>> than one hour and can't enter >>> kmdb mode (the deadman timer is the default value). secondly I add?set >>> pcpslump:apic_panic_on_nmi=1? to >>> /etc/system, and send an NMI to OS from HP utility, The system enters the >>> kmdb mode this time, But the keyboard >>> freeze and I am not able to perform any operations in kmdb. >>> >>> Does anyone know any other way to debug this hard hang? >>> >> >> Have you tied using kmdb via the tip line? Sometimes using tip line is >> helpful. > > Doesn't work. > Thanks, > Colin
Does it only happen with snv_130? Does it only happen on this specific system, or does it happen on multiple systems? My point is, has the hardware gone bad? If so, you may never debug it like this. Greg
