profile.txt

Key takeaways:
	- a lot of idle time, unless on battery power could make better use of it
	  (e.g. caching stuff, cleaning up things)

  	- blocking for the keyboard (or a more general case, blocking until a byte
	  gets set to a certain value) will time

	- console scrolling is slow, but that's to be expected

	- signal handling could be made faster (KeCheckSignal, KiCheckSignalZ)

	- KeGetFileFromDescriptor could be made faster

	- strcmp, memset faster if possible

	- semaphores and locks get used a lot by ACPICA

	- VGAVideo::putrect if possible, but already pretty optimised

	- does page locking actually work? hopefully it does


Sorting 383 items...
   290802  HalSystemIdle()
    55189  SATA::access(unsigned long long, int, void*, bool)
    18384  timerHandler(unsigned int)
    11628  AcpiDsBeginMethodExecution
     1259  readKeyboard(VgaText*, char*, unsigned long)
      855  idleCommon()
      437  HalConsoleScroll(int, int)
      425  AcpiDsExecEndOp
      272  int_common_stub
      260  KeCheckSignal(SigHandlerBlock*, int*)
      258  Vm::start8086(char const*, unsigned short, unsigned short, unsigned short, unsigned short)
      213  AcpiDsStoreObjectToLocal
      190  LinkedList
      186  KeGetFileFromDescriptor(int)
      165  KiCheckSignalZ
      151  Semaphore::acquire(int)
      143  asmReleaseLock
      141  Semaphore::release()
      128  AcpiDsInitObjectFromOp
      109  VCache::read(unsigned long long, int, void*)
       90  strcmp
       82  Thr::getAddressOfKernelSymbol(char const*)
       61  Dbg::logc(char)
       47  int_handler
       38  idleFunction(void*)
       34  VCache::write(unsigned long long, int, void*)
       32  VGAVideo::putrect(int, int, int, int, unsigned int)
       29  memset
       29  AcpiUtUpdateObjectReference
       24  VgaText::updateCursor()
       24  AcpiOsSignalSemaphore
       23  VAS::unlockPages(unsigned long, int)
       23  AcpiUtAcquireMutex
       20  move_window
       18  dlmalloc
       17  VgaText::putchar(char, VgaColour, VgaColour)
       17  Dbg::kprintf(char const*, ...)
       17  AcpiUtReleaseMutex
       17  pitHandler(regs*, void*)
       15  AcpiOsAcquireObject
       14  AcpiUtCreateUpdateStateAndPush
       13  AcpiOsReleaseObject
       13  VGAVideo::open(int, int, void*)
       12  AcpiOsWaitSemaphore
       12  Semaphore::acquire()
       12  AcpiPsGetOpcodeInfo
       11  get_fat.isra.2
       11  AcpiNsSearchOneScope
       10  Fs::standardiseFiles(char*, char const*, char const*, bool)
       10  VAS::canLockPages(unsigned long, int)
       10  f_read
       10  AcpiPsCreateOp
       10  AcpiNsBuildNormalizedPath
       10  AcpiUtMatchPredefinedMethod
        9  AcpiUtCreateGenericState
        9  AcpiOsGetThreadId
        9  AcpiUtPushGenericState
        9  VESA::putrect(int, int, int, int, unsigned int)
        8  ff_wtoupper
        8  AcpiOsAcquireLock
        8  AcpiNsLookup
        7  create_name
        7  put_fat
        7  create_chain
        7  KeRestorePreemption()
        7  AcpiPsPushScope
        7  AcpiPsParseLoop
        7  AcpiPsGetArguments
        7  asmAcquireLock
        7  AcpiPsAllocOp
        7  AcpiDsCreateOperand
        7  AcpiOsReadPciConfiguration
        6  AcpiDsMethodDataInit
        6  AcpiNsGetAttachedObject
        6  AcpiUtUpdateRefCount
        6  VgaText::scrollScreen()
        6  performRegionOperation(Region, Region, RegionOperation)
        5  KeSetBootMessage(char const*)
        5  Virt::allocateKernelVirtualPages(int)
        5  File::read(unsigned long long, void*, int*)
        5  mount_volume
        5  LogicalDisk::read(unsigned long long, int, void*)
        5  KeSystemCall(regs*, void*)
        5  AcpiNsSearchAndEnter
        5  AcpiPsAppendArg
        5  AcpiPsGetNextArg
        5  acpiWalkDescendingCallback(void*, unsigned int, void*, void**)
        5  KeCalculateCRC32(unsigned char*, int)
        5  AcpiDsInitAmlWalk
        4  KePerformRelocation(unsigned char*, unsigned long, Elf32_Shdr*, Elf32_Rel*)
        4  cmp_lfn
        4  VAS::canLockPage(unsigned long)
        4  ld_dword
        4  f_write
        4  VAS::mapPage(unsigned long, unsigned long, int)
        4  AcpiUtValidNameChar
        4  AcpiTbParseRootTable
        4  AcpiExSystemIoSpaceHandler
        4  AcpiExStore
        4  AcpiDsResultStackPop
        4  AcpiPsGetAmlOpcode
        4  asmAcquireLock.retry
        4  AcpiUtDeleteGenericState
        4  free
        4  AcpiUtCreateInternalObjectDbg
        4  dir_find
        4  AcpiExResolveToValue
        4  AcpiPsDeleteParseTree
        3  HalEnableNMI()
        3  sbrk
        3  IDE::detect()
        3  KeLoadDriver(char const*)
        3  sendKeyToTerminal(unsigned char)
        3  fatWrapperReadDisk
        3  chk_chr
        3  clst2sect
        3  SATA::read(unsigned long long, int, void*)
        3  follow_path
        3  FAT::read(void*, unsigned long, void*, int*)
        3  Process::Process(bool, char const*, Process*, char**)
        3  AcpiFindRootPointer
        3  AcpiOsMapMemory
        3  AcpiPsExecuteTable
        3  AcpiPsGetParentScope
        3  AcpiGetObjectInfo
        3  AcpiExStopTraceOpcode
        3  AcpiPsPeekOpcode
        3  AcpiExResolveOperands
        3  AcpiUtPopGenericState
        3  AcpiPsCompleteOp
        3  AcpiNsWalkNamespace
        3  AcpiDsIsResultUsed
        3  AcpiDsResultStackPush
        3  AcpiNsInternalizeName
        3  VgaText::clearScreen()
        3  malloc_consolidate
        3  AcpiExOpcode_2A_1T_1R
        3  Thr::allocateMemoryForTask(Process*, File*, unsigned long, unsigned long, unsigned long)
        3  Directory::Directory(char const*, Process*)
        2  PCI::foundDevice(PCIDeviceInfo)
        2  SATA::write(unsigned long long, int, void*)
        2  KeLoadELF(unsigned char*, bool, unsigned long)
        2  VgaText::puts(char const*, VgaColour, VgaColour)
        2  RTC::setTimeInDatetimeUTC(datetime_t)
        2  FAT::open(char const*, void**, FileOpenMode)
        2  VAS::unlockPage(unsigned long)
        2  SysOpen(regs*)
        2  KiIsSymlinkRegistered(char const*)
        2  KeDisablePreemption()
        2  VAS::getPageTableEntry(unsigned long)
        2  CmCreateExtent(Reghive_Tag*, int, int, unsigned char*)
        2  RTC::RTC()
        2  SATA::open(int, int, void*)
        2  LogicalDisk::assignDriveLetter()
        2  FAT::tryMount(LogicalDisk*, int)
        2  FAT::stat(char const*, unsigned long long*, bool*)
        2  PCI::pciDetailsToFilepath(PCIDeviceInfo, char*)
        2  KeLoadELFProgramHeaders(unsigned char*, bool, unsigned long)
        2  AcpiTbConvertFadt
        2  AcpiTbPutTable
        2  AcpiDsLoad2EndOp
        2  AcpiDsCreateOperands
        2  AcpiDsEvalDataObjectOperands
        2  AcpiPsGetNextPackageEnd
        2  AcpiPsBuildNamedOp
        2  AcpiPsGetNextNamepath
        2  AcpiPsParseAml
        2  AcpiExNameSegment
        2  AcpiExDoLogicalOp
        2  AcpiUtDeleteInternalObj
        2  AcpiPsCompleteThisOp
        2  AcpiUtCreateUpdateState
        2  AcpiExOpcode_2A_0T_1R
        2  AcpiExReadDataFromField
        2  AcpiDsCreateBufferField
        2  AcpiNsGetNormalizedPathname
        2  AcpiUtCreateThreadState
        2  AcpiUtRepairName
        2  AcpiDsCreateWalkState
        2  AcpiExStartTraceOpcode
        2  AcpiNsMatchComplexRepair
        2  CmOpen(char const*)
        2  remove_chain
        2  get_ldnumber
        2  FAT::fixFilepath(char*)
        2  sYSMALLOc
        2  HalInstallIRQHandler(int, void (*)(regs*, void*), bool, void*)
        2  PCI::getDeviceData(unsigned char, unsigned char, unsigned char)
        2  createPartitionsForDisk(PhysicalDisk*)
        2  f_lseek
        2  ISA::detect()
        2  dir_sdi
        2  start(void*)
        2  AcpiNsFindIniMethods
        2  AcpiUtCopyIpackageToIpackage
        2  AcpiUtRemoveReference
        2  AcpiOsFree
        2  AcpiUtInitializeBuffer
        2  acpiDynamicIrqCallback(acpi_resource*, void*)
        2  AcpiPsPopScope
        2  AcpiNsInstallNode
        2  KeInitialiseSymlinks()
        2  AcpiNsEvaluate
        2  AcpiUtIsPciRootBridge
        2  AcpiExResolveObjectToValue
        2  AcpiRsGetListLength
        2  AcpiUtValidObjectType
        2  malloc
        2  VAS::lockPage(unsigned long)
        1  ReservedFilename::ReservedFilename(int)
        1  VgaText::writeCharacter(char, VgaColour, VgaColour, int, int)
        1  SATABus::probePort(SATABus::tagHBA_MEM volatile*)
        1  Thr::loadKernelSymbolTable(char const*)
        1  KeExecuteDriver(unsigned long, void*)
        1  Device::addChild(Device*)
        1  KeRegisterAtexit(void (*)(void*), void*)
        1  KeLoadAndExecuteDriver(char const*, void*, bool)
        1  __udivdi3
        1  sync_window
        1  f_opendir
        1  VAS::allocatePages(int, int)
        1  Fs::setcwd(Process*, char*)
        1  mem_cmp
        1  dir_clear
        1  st_dword
        1  fatWrapperWriteDisk
        1  sync_fs
        1  VCache::writeWriteBuffer()
        1  mem_set
        1  File::stat(unsigned long long*, bool*)
        1  SysReadDir(regs*)
        1  f_open
        1  CmConvertToInternalFilename(char const*, unsigned char*)
        1  disk_read
        1  memcmp
        1  RTC::completeRTCRefresh()
        1  KeRestart()
        1  Device::closeAll()
        1  PCI::PCI()
        1  IDE::open(int, int, void*)
        1  IOAPIC::handlesGSIWithNumber(unsigned int)
        1  File::~File()
        1  sbrk_thunk
        1  Keyboard::Keyboard(char const*)
        1  Phys::allocatePage()
        1  mem_cpy
        1  AcpiUtMutexInitialize
        1  AcpiNsRootInitialize
        1  AcpiNsGetInternalNameLength
        1  AcpiTbNotifyTable
        1  AcpiEvInstallSpaceHandler
        1  AcpiEvInstallRegionHandlers
        1  AcpiNsLoadTable
        1  AcpiPsCreateScopeOp
        1  AcpiPsGetNextNamestring
        1  AcpiDsExecBeginOp
        1  AcpiPsGetNextSimpleArg
        1  AcpiExTruncateFor32bitTable
        1  AcpiExCreateMutex
        1  AcpiNsOpensScope
        1  AcpiNsInitOneObject
        1  AcpiReadBitRegister
        1  AcpiOsReadPort
        1  AcpiExSetupRegion
        1  AcpiDsResultPush
        1  AcpiNsInitializeDevices
        1  AcpiNsCheckAcpiCompliance
        1  AcpiExIntegerToString
        1  AcpiUtCopyIelementToIelement
        1  AcpiPsGetArg
        1  memcpy
        1  AcpiDsObjStackPop
        1  AcpiExOpcode_1A_1T_1R
        1  AcpiExStoreObjectToIndex
        1  AcpiNsGetBitmappedType
        1  AcpiUtWalkAmlResources
        1  AcpiDsScopeStackPush
        1  AcpiExFieldDatumIo
        1  AcpiDsInitBufferField
        1  AcpiExInterpreterTraceEnabled
        1  AcpiEvSystemMemoryRegionSetup
        1  __not_memcpy
        1  AcpiRsStreamOptionLength
        1  dir_next
        1  KePerformRelocations(unsigned char*, unsigned long)
        1  CmAddShift(unsigned int*, int*, unsigned char, int)
        1  CmGetInteger(Reghive_Tag*, int, unsigned long long*)
        1  setActiveTerminal(VgaText*)
        1  KePowerThread(void*)
        1  Thr::loadProgramIntoMemory(Process*, char const*)
        1  string_ends_with(char const*, char const*)
        1  SysSpawn(regs*)
        1  VGAVideo::setPlane(int)
        1  LinkedList2
        1  NFrame::invalidate()
        1  NFrame::repaint(Video*, Region)
        1  Process::createThread(void (*)(void*), void*, int)
        1  tchar2uni
        1  AcpiInfo
        1  AcpiTbAcquireTempTable
        1  AcpiInstallAddressSpaceHandler
        1  AcpiEvInitializeRegion
        1  AcpiHwRead
        1  AcpiEvInstallGpeBlock
        1  AcpiNsInitOneDevice
        1  AcpiExWriteDataToField
        1  AcpiExStopTraceMethod
        1  AcpiDsBuildInternalPackageObj
        1  AcpiDsMethodDataSetValue
        1  AcpiDsExecEndControlOp
        1  AcpiDsEvalBufferFieldOperands
        1  AcpiPsExecuteMethod
        1  AcpiDsLoad2BeginOp
        1  AcpiPsHasCompletedScope
        1  AcpiNsGetType
        1  VAS::VAS(bool)
        1  PCI::pciReadWord(unsigned char, unsigned char, unsigned char, unsigned char)
        1  IOAPIC::redirect(unsigned char, unsigned long long, unsigned char, bool, bool)
        1  SATABus::portRebase(SATABus::tagHBA_PORT volatile*, int)
        1  ACPI::open(int, int, void*)
        1  AcpiTbInstallStandardTable
        1  AcpiTbParseFadt
        1  AcpiTbCheckDuplication
        1  AcpiDsCreateNode
        1  AcpiNsCreateNode
        1  AcpiNsExecuteTable
        1  AcpiDsExecuteArguments
        1  AcpiEvInstallSciHandler
        1  AcpiNsDeleteChildren
        1  AcpiNsCheckReturnValue
        1  AcpiDsMethodDataDeleteValue
        1  AcpiPsFreeOp
        1  AcpiDsBuildInternalObject
        1  AcpiDsResultPop
        1  AcpiUtDeleteObjectDesc
        1  AcpiDsDeleteResultIfNotUsed
        1  AcpiPsNextParseState
        1  AcpiDsTerminateControlMethod
        1  AcpiExResolveNodeToValue
        1  CmFindObjectFromPath(Reghive_Tag*, char const*)
        1  SysGetEnv(regs*)
        1  SysIsATTY(regs*)
        1  milliTenthSleepUntil(unsigned long long)
        1  ssfn_render
        1  _ssfn__parse_uncompressed_block
        1  VGAVideo::bitblit(int, int, int, int, int, int, int, unsigned int*)
        1  PS2Mouse::open(int, int, void*)
        1  File::close()
        1  AcpiOsCreateSemaphore
        1  AcpiOsUnmapMemory
        1  AcpiTbCompareTables
        1  AcpiNsValidateHandle
        1  AcpiUtAllocateOwnerId
        1  AcpiExCreateMethod
        1  AcpiEnableSubsystem
        1  AcpiExWriteWithUpdateRule
        1  AcpiUtHexToAsciiChar
        1  AcpiRsGetPciRoutingTableLength
        1  AcpiEvIsPciRootBridge
        1  AcpiDsMethodDataGetNode
        1  AcpiRsGetMethodData
        1  AcpiUtExecute_UID
        1  AcpiNsBuildInternalName
        1  AcpiEvAcquireGlobalLock
        1  AcpiRsGetAddressCommon
        1  AcpiGetCurrentResources
        1  AcpiOsAllocate
        1  AcpiRsConvertAmlToResource
        1  AcpiPsGetOpcodeSize
        1  EnvVarContainer::loadFrom(char const*, char const*)
        1  dir_read
        1  ld_word
        1  strcpy
        1  strlen
        1  UnixFile::~UnixFile()
        1  SysWrite(regs*)
        1  Directory::open()
        1  SysSizeFromFilename(regs*)
        1  SysSize(regs*)
        1  disk_status
        1  VAS::lockPages(unsigned long, int)
        1  SysShutdown(regs*)
        1  acpicaShutdown()