It looks like interrupts. I'm up with init=/bin/bash, and I can type
commands, but it runs way behind and output is groups of about 8 characters
followed by long pauses. Input overrun occurs if I type more than 16
characters too fast.
bash# cat /proc/mtrr
reg00: base=0x00000000 ( 0MB), size= 128MB: write-back, count=1
bash#
bash# ttyS: 1 input overrun(s)
cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 7
model name : Pentium III (Katmai)
stepping : 3
cpu MHz : 497.846
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmove
bogomips : 992.87
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 7
model name : Pentium III (Katmai)
stepping : 3
cpu MHz : 497.846
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmove
bogomips : 992.87
bash# cat /proc/interrupts
CPU0 CPU1
0: 34303 119266 IO-APIC-edge timer
2: 0 0 XT-PIC cascade
4: 0 0 IO-APIC-edge serial
8: 0 0 IO-APIC-edge rtc
14: 24 92 IO-APIC-edge ide0
NMI: 0 0
LOC: 153472 153469
ERR: 0
MIS: 0
bash#
Looks like interrupts to me.
ron
