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DateMon, 19 Jan 1998 00:58:38 -0500 (EST)
FromEmil Briggs <>
SubjectSMP profiling broken in 2.1.78?
I wanted to compare the SMP statistics for 2.0 and 2.1 series
kernels so I turned on the profiling and took a look. The results
don't look quite right to me however. Am I missing something here?
Or are the 2.1 kernels only supposed to show total interrupts and
not per CPU?

Emil


From 2.1.78
CPUS:          2
            SUM         P0         P1
  0:     233374          0          0   timer
  1:       5055          0          0   keyboard
  2:          0          0          0   cascade
  3:      37870          0          0   serial
 13:          4          0          0   fpu
 14:      39074          0          0   BusLogic BT-958
 15:          9          0          0   ide1
LCK:          0          0          0   spins from int
LCK:          0          0          0   spins from syscall
LCK:          0          0          0   spins from sysidle
IDLE          0          0          0   idle ticks
TICK     466720     233360     233360   local APIC timer ticks
MULT:                    1          1   profiling multiplier
COUNT:                   1          1   profiling counter
IPI:          0   received


and for 2.0.33
CPUS:          2 
            SUM         P0         P1 
  0:      51339      51339          0   timer
  1:       1287       1287          0   keyboard
  2:          0          0          0   cascade
  3:      15102      15102          0 + serial
  4:      13589      13589          0 + serial
  7:         73         73          0   DS21041 Tulip
  8:          1          1          0 + rtc
 13:      24550      10328      14222 + IPI
 14:       6476       6476          0 + BusLogic BT-958
 15:          0          0          0 + ide1
LCK:    9373612    2039366    7334246   spins from int
LCK:   14831436    7601292    7230144   spins from syscall
LCK:    3348152    1825244    1522908   spins from sysidle
IDLE      97504      48851      48653   idle ticks
IPI:      24550   received


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