[root@localhost wine]# opreport -l ntdll.dll.so
CPU: CPU with timer interrupt, speed 0 MHz (estimated)
Profiling through timer interrupt
samples  %        symbol name
292675   99.6279  HEAP_FindFreeBlock
470       0.1600  HEAP_CreateFreeBlock
231       0.0786  HEAP_FindSubHeap
227       0.0773  RtlAllocateHeap
73        0.0248  HEAP_GetPtr
19        0.0065  HEAP_ShrinkBlock
19        0.0065  HEAP_ValidateInUseArena
18        0.0061  HEAP_IsRealArena
18        0.0061  RtlFreeHeap
12        0.0041  HEAP_MakeInUseBlockFree
3         0.0010  NtAllocateVirtualMemory
1        3.4e-04  VIRTUAL_FindView
1        3.4e-04  VIRTUAL_GetProt
1        3.4e-04  anonymous symbol from section .plt