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f72fd9616e
The COMP shell command compares two files byte for byte. In order to retrieve the bytes to compare, it currently invokes gEfiShellProtocol->ReadFile() on both files, using a single-byte buffer every time. This is very inefficient; the underlying EFI_FILE_PROTOCOL.Read() function may be costly. Read both file operands in chunks of "PcdShellFileOperationSize" bytes. Draw bytes for comparison from the internal read-ahead buffers. Some ad-hoc measurements on my laptop, using OVMF, and the 4KB default of "PcdShellFileOperationSize": - When comparing two identical 1MB files that are served by EnhancedFatDxe on top of VirtioScsiDxe, this patch brings no noticeable improvement; the comparison completes in <1s both before and after. - When comparing two identical 1MB files served by VirtioFsDxe, the comparison time improves from 2 minutes 25 seconds to <1s. Cc: Philippe Mathieu-Daudé <philmd@redhat.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Zhichao Gao <zhichao.gao@intel.com> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3123 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Zhichao Gao <zhichao.gao@intel.com> Message-Id: <20210113085453.10168-2-lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
133 lines
3.4 KiB
INI
133 lines
3.4 KiB
INI
## @file
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# Provides shell Debug1 profile functions
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#
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# Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
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#
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# SPDX-License-Identifier: BSD-2-Clause-Patent
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#
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#
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##
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[Defines]
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INF_VERSION = 0x00010006
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BASE_NAME = UefiShellDebug1CommandsLib
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FILE_GUID = 90330D51-A99B-4cc8-A2EB-AE22542A3F45
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MODULE_TYPE = UEFI_APPLICATION
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VERSION_STRING = 1.2
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LIBRARY_CLASS = NULL|UEFI_APPLICATION UEFI_DRIVER
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CONSTRUCTOR = UefiShellDebug1CommandsLibConstructor
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DESTRUCTOR = UefiShellDebug1CommandsLibDestructor
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[Sources]
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SetSize.c
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Comp.c
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Mode.c
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MemMap.c
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Compress.h
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Compress.c
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EfiCompress.c
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EfiDecompress.c
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Dmem.c
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LoadPciRom.c
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Mm.c
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SetVar.c
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SerMode.c
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Pci.c
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Pci.h
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DmpStore.c
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Dblk.c
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SmbiosView/EventLogInfo.c
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SmbiosView/EventLogInfo.h
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SmbiosView/PrintInfo.c
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SmbiosView/QueryTable.c
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SmbiosView/SmbiosView.c
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SmbiosView/SmbiosViewStrings.uni
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SmbiosView/LibSmbiosView.c
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SmbiosView/PrintInfo.h
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SmbiosView/LibSmbiosView.h
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SmbiosView/QueryTable.h
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SmbiosView/SmbiosView.h
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UefiShellDebug1CommandsLib.c
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UefiShellDebug1CommandsLib.h
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UefiShellDebug1CommandsLib.uni
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## Files shared by both editors
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EditTitleBar.h
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EditTitleBar.c
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EditInputBar.h
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EditInputBar.c
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EditStatusBar.h
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EditStatusBar.c
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EditMenuBar.h
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EditMenuBar.c
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## Files specific to the text editor
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Edit/Edit.c
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Edit/TextEditor.h
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Edit/TextEditorTypes.h
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Edit/FileBuffer.h
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Edit/FileBuffer.c
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Edit/MainTextEditor.h
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Edit/MainTextEditor.c
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Edit/Misc.h
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Edit/Misc.c
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Edit/TextEditStrings.uni
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## Files specific to the HEX editor
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HexEdit/BufferImage.h
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HexEdit/BufferImage.c
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HexEdit/Clipboard.h
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HexEdit/Clipboard.c
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HexEdit/DiskImage.h
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HexEdit/DiskImage.c
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HexEdit/FileImage.h
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HexEdit/FileImage.c
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HexEdit/HexEdit.c
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HexEdit/HexEditor.h
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HexEdit/HexEditorTypes.h
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HexEdit/HexeditStrings.uni
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HexEdit/MainHexEditor.h
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HexEdit/MainHexEditor.c
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HexEdit/MemImage.h
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HexEdit/MemImage.c
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HexEdit/Misc.h
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HexEdit/Misc.c
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[Packages]
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MdePkg/MdePkg.dec
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ShellPkg/ShellPkg.dec
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MdeModulePkg/MdeModulePkg.dec
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[LibraryClasses]
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MemoryAllocationLib
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BaseLib
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BaseMemoryLib
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IoLib
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DebugLib
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ShellCommandLib
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ShellLib
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UefiLib
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UefiRuntimeServicesTableLib
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UefiBootServicesTableLib
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SortLib
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PrintLib
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BcfgCommandLib
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[Pcd]
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gEfiShellPkgTokenSpaceGuid.PcdShellFileOperationSize ## CONSUMES
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gEfiShellPkgTokenSpaceGuid.PcdShellProfileMask ## CONSUMES
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[Protocols]
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gEfiPciRootBridgeIoProtocolGuid ## SOMETIMES_CONSUMES
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gEfiBlockIoProtocolGuid ## SOMETIMES_CONSUMES
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gEfiSimplePointerProtocolGuid ## SOMETIMES_CONSUMES
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gEfiCpuIo2ProtocolGuid ## SOMETIMES_CONSUMES
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[Guids]
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gEfiGlobalVariableGuid ## SOMETIMES_CONSUMES ## GUID
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gEfiSmbiosTableGuid ## SOMETIMES_CONSUMES ## SystemTable
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gEfiSmbios3TableGuid ## SOMETIMES_CONSUMES ## SystemTable
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gEfiMpsTableGuid ## SOMETIMES_CONSUMES ## SystemTable
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gEfiAcpi10TableGuid ## SOMETIMES_CONSUMES ## SystemTable
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gEfiAcpi20TableGuid ## SOMETIMES_CONSUMES ## SystemTable
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gShellDebug1HiiGuid ## SOMETIMES_CONSUMES ## HII
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