从Peter Friend's answer above 开始，我编写了一个 powershell 脚本来更新所有 3 个有问题的优先级（CPU、内存和 IO）。我会把它贴在这里，因为这是这个问题在谷歌中排名第一的结果。
你可以像这样从 Powershell 运行它 -
.\SetProcessPriority.ps1 -ProcessName sqlservr -CpuPriorityClass Idle -MemoryPriority 1 -IoPriority 0
- CpuPriorityClass 的选项有 - Idle、BelowNormal、Normal、AboveNormal、High、Realtime
- MemoryPriority 的选项为 1-5（将此设置为 1 模拟了当您选择 Process Explorer 的“Background”“Low I/O and Memory Priority”选项时发生的情况）
- IoPriority 的选项为 0（非常低）、1（低）、2（正常）（将此设置为 0 模拟了当您选择 Process Explorer 的“背景”“低 I/O 和内存优先级”选项时发生的情况）
SetProcessPriority.ps1 代码 -
[CmdletBinding()]
Param (
[string]$ProcessName = "sqlservr",
[string]$CpuPriorityClass = "Idle",
[int]$MemoryPriority = 1,
[int]$IoPriority = 0
)
# If you can't run, execute this first from an elevated PowerShell Prompt - set-executionpolicy remotesigned
If (-NOT ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator"))
{
$arguments = "& '" + $myinvocation.mycommand.definition + "'"
Start-Process powershell -Verb runAs -ArgumentList $arguments
Break
}
Add-Type @"
using System;
using System.Runtime.InteropServices;
namespace SysWin32
{
public enum PROCESS_INFORMATION_CLASS
{
ProcessMemoryPriority,
ProcessInformationClassMax,
}
[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
public struct PROCESS_INFORMATION
{
public uint Information;
}
public partial class NativeMethods {
[System.Runtime.InteropServices.DllImportAttribute("kernel32.dll", EntryPoint="GetCurrentProcess", SetLastError=true)]
public static extern System.IntPtr GetCurrentProcess();
[System.Runtime.InteropServices.DllImportAttribute("kernel32.dll", EntryPoint="OpenProcess", SetLastError=true)]
public static extern IntPtr OpenProcess(uint dwDesiredAccess, bool bInheritHandle, uint dwProcessId);
[System.Runtime.InteropServices.DllImportAttribute("kernel32.dll", EntryPoint="SetProcessInformation", SetLastError=true)]
public static extern bool SetProcessInformation(System.IntPtr hProcess, PROCESS_INFORMATION_CLASS ProcessInformationClass, System.IntPtr ProcessInformation, uint ProcessInformationSize) ;
}
}
namespace SysWinNT
{
public enum PROCESS_INFORMATION_CLASS
{
ProcessBasicInformation,
ProcessQuotaLimits,
ProcessIoCounters,
ProcessVmCounters,
ProcessTimes,
ProcessBasePriority,
ProcessRaisePriority,
ProcessDebugPort,
ProcessExceptionPort,
ProcessAccessToken,
ProcessLdtInformation,
ProcessLdtSize,
ProcessDefaultHardErrorMode,
ProcessIoPortHandlers, // Note: this is kernel mode only
ProcessPooledUsageAndLimits,
ProcessWorkingSetWatch,
ProcessUserModeIOPL,
ProcessEnableAlignmentFaultFixup,
ProcessPriorityClass,
ProcessWx86Information,
ProcessHandleCount,
ProcessAffinityMask,
ProcessPriorityBoost,
ProcessDeviceMap,
ProcessSessionInformation,
ProcessForegroundInformation,
ProcessWow64Information,
ProcessImageFileName,
ProcessLUIDDeviceMapsEnabled,
ProcessBreakOnTermination,
ProcessDebugObjectHandle,
ProcessDebugFlags,
ProcessHandleTracing,
ProcessIoPriority,
ProcessExecuteFlags,
ProcessTlsInformation,
ProcessCookie,
ProcessImageInformation,
ProcessCycleTime,
ProcessPagePriority,
ProcessInstrumentationCallback,
ProcessThreadStackAllocation,
ProcessWorkingSetWatchEx,
ProcessImageFileNameWin32,
ProcessImageFileMapping,
ProcessAffinityUpdateMode,
ProcessMemoryAllocationMode,
ProcessGroupInformation,
ProcessTokenVirtualizationEnabled,
ProcessConsoleHostProcess,
ProcessWindowInformation,
MaxProcessInfoClass // MaxProcessInfoClass should always be the last enum
}
public partial class NativeMethods {
[System.Runtime.InteropServices.DllImportAttribute("ntdll.dll", EntryPoint="NtSetInformationProcess")]
public static extern int NtSetInformationProcess(System.IntPtr hProcess, PROCESS_INFORMATION_CLASS processInformationClass, System.IntPtr ProcessInformation, uint ProcessInformationSize);
}
}
"@
$OverallResult = 0
$Process = Get-Process $ProcessName
$ProcessId = $Process.id
Try
{
$Process.PriorityClass=$CpuPriorityClass
}
Catch
{
Write-host -BackgroundColor Black -ForegroundColor Red "Error setting process priority - $($_.Exception.Message)"
pause
$OverallResult = 1
exit $OverallResult
}
Write-Host -ForegroundColor Green ("Set CPU piority on {0} ({1}) to be {2}" -f $ProcessName, $ProcessId, $CpuPriorityClass)
# 4096 or 0x1000 = PROCESS_QUERY_LIMITED_INFORMATION
# 1056763 or 0x00101ffb = PROCESS_ALL_ACCESS
$DesiredAccess = 0x00101ffb
$InheritHandle = $false
$hProcess = [SysWin32.NativeMethods]::OpenProcess($DesiredAccess, $InheritHandle, $ProcessId);
$LastError = [Runtime.InteropServices.Marshal]::GetLastWin32Error()
if ($hProcess -eq 0)
{
Write-Host -BackgroundColor Black -ForegroundColor Red "Failed to open Win32 process. Error: $(([ComponentModel.Win32Exception] $LastError).Message)"
pause
$OverallResult = 2
exit $OverallResult
}
Write-Host -ForegroundColor Green ("Successfully got handle - {0}" -f $hProcess)
$memInfo = New-Object SysWin32.PROCESS_INFORMATION
$memInfo.Information = $MemoryPriority
$memInfoSize = [System.Runtime.Interopservices.Marshal]::SizeOf($memInfo)
$memInfoPtr = [System.Runtime.Interopservices.Marshal]::AllocHGlobal($memInfoSize)
[System.Runtime.Interopservices.Marshal]::StructureToPtr($memInfo, $memInfoPtr, $false)
$result = [SysWin32.NativeMethods]::SetProcessInformation($hProcess, [SysWin32.PROCESS_INFORMATION_CLASS]::ProcessMemoryPriority, $memInfoPtr, $memInfoSize)
$LastError = [Runtime.InteropServices.Marshal]::GetLastWin32Error()
if (!$result)
{
$OverallResult = 3
Write-Host -BackgroundColor Black -ForegroundColor Red ("Failed to set memory piority on {0} ({1}) to be {2}. Error: {3}" -f $ProcessName, $ProcessId, $MemoryPriority, ([ComponentModel.Win32Exception]$LastError).Message)
}
else
{
Write-Host -ForegroundColor Green ("Set memory piority on {0} ({1}) to be {2}." -f $ProcessName, $ProcessId, $MemoryPriority)
}
$ioInfo = New-Object SysWin32.PROCESS_INFORMATION
$ioInfo.Information = $IoPriority
$ioInfoSize = [System.Runtime.Interopservices.Marshal]::SizeOf($ioInfo)
$ioInfoPtr = [System.Runtime.Interopservices.Marshal]::AllocHGlobal($ioInfoSize)
[System.Runtime.Interopservices.Marshal]::StructureToPtr($ioInfo, $ioInfoPtr, $false)
$result = [SysWinNT.NativeMethods]::NtSetInformationProcess($hProcess, [SysWinNT.PROCESS_INFORMATION_CLASS]::ProcessIoPriority, $ioInfoPtr, $ioInfoSize)
$LastError = [Runtime.InteropServices.Marshal]::GetLastWin32Error()
if ($result -ne 0)
{
$OverallResult = 4
Write-Host -BackgroundColor Black -ForegroundColor Red ("Failed to set IO piority on {0} ({1}) to be {2}. Result: {3}. Error: {4}" -f $ProcessName, $ProcessId, $IoPriority, $result, ([ComponentModel.Win32Exception]$LastError).Message)
}
else
{
Write-Host -ForegroundColor Green ("Set IO piority on {0} ({1}) to be {2}" -f $ProcessName, $ProcessId, $IoPriority)
}
exit $OverallResult