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ikarus/lab/prof/int.s

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Profiling timing shows that we can do interrupt checks with cost: * about 2.0 secs per 1 billion checks if the counter is kept in memory * about 0.5 secs per 1 billion checks if the counter is kept in register.
2006-12-21 08:22:07 -05:00
.globl _interrupt_mem
_interrupt_mem:
movl 4(%esp), %eax
L_loop1:
Actually, the profiling times show that memory-based tests can be performed at around 3 secs per 1 billion checks (about 6 times slower than register-based counters).
2006-12-21 08:32:45 -05:00
subl $1, 0(%eax);
jz L_int1
Profiling timing shows that we can do interrupt checks with cost: * about 2.0 secs per 1 billion checks if the counter is kept in memory * about 0.5 secs per 1 billion checks if the counter is kept in register.
2006-12-21 08:22:07 -05:00
subl $1, 0(%eax);
jz L_int1
jmp L_loop1
L_int1:
ret
.globl _interrupt_reg
_interrupt_reg:
movl 4(%esp), %eax
L_loop2:
subl $1, %eax;
jz L_int2
subl $1, %eax;
jz L_int2
subl $1, %eax;
jz L_int2
subl $1, %eax;
jz L_int2
subl $1, %eax;
jz L_int2
subl $1, %eax;
jz L_int2
subl $1, %eax;
jz L_int2
jmp L_loop2
L_int2:
ret