Hold on Refresh Asset Database for 10 minutes at least when opening Unity Editor (Mac)

contentg in Editor.log

 Application.AssetDatabase.Refresh Start
 Refresh completed in 0.610739 seconds.
 RefreshInfo: RefreshV2(ForceSynchronousImport) scanfilter: 
 RefreshProfiler: Total: 605.911ms
     InvokeBeforeRefreshCallbacks: 2.302ms
     ApplyChangesToAssetFolders: 0.069ms
     Scan: 292.704ms
     OnSourceAssetsModified: 0.000ms
     InitializeImportedAssetsSnapshot: 14.062ms
     GetAllGuidsForCategorization: 1.272ms
     CategorizeAssets: 259.574ms
     ImportAndPostprocessOutOfDateAssets: 16.342ms (3.888ms without children)
         PostProcessAllAssets: 0.000ms
         ReloadImportedAssets: 0.001ms
         EnsureUptoDateAssetsAreRegisteredWithGuidPM: 2.955ms
         InitializingProgressBar: 0.000ms
         PostProcessAllAssetNotificationsAddChangedAssets: 1.894ms
         OnDemandSchedulerStart: 4.506ms
         RestoreLoadedAssetsState: 3.098ms
     ReloadSourceAssets: 1.239ms
     UnloadImportedAssets: 0.535ms
     Hotreload: 0.014ms
     FixTempGuids: 0.003ms
     GatherAllCurrentPrimaryArtifactRevisions: 1.019ms
     UnloadStreamsBegin: 0.042ms
     LoadedImportedAssetsSnapshotReleaseGCHandles: 2.467ms
     GetLoadedSourceAssetsSnapshot: 5.309ms
     PersistCurrentRevisions: 1.001ms
     UnloadStreamsEnd: 0.038ms
     GenerateScriptTypeHashes: 18.821ms
     Untracked: 7.917ms
 Application.AssetDatabase.Refresh End
 RefreshInfo: StopAssetImportingV2(ForceSynchronousImport) scanfilter: 
 RefreshProfiler: Total: 5.293ms
 Refresh completed in 0.564804 seconds.
 RefreshInfo: RefreshV2(NoUpdateAssetOptions) scanfilter: 
 RefreshProfiler: Total: 564.670ms
     InvokeBeforeRefreshCallbacks: 0.000ms
     ApplyChangesToAssetFolders: 0.068ms
     Scan: 285.565ms
     OnSourceAssetsModified: 0.000ms
     InitializeImportedAssetsSnapshot: 12.707ms
     GetAllGuidsForCategorization: 1.244ms
     CategorizeAssets: 236.376ms
     ImportAndPostprocessOutOfDateAssets: 11.438ms (2.198ms without children)
         PostProcessAllAssets: 0.000ms
         EnsureUptoDateAssetsAreRegisteredWithGuidPM: 2.978ms
         InitializingProgressBar: 0.000ms
         PostProcessAllAssetNotificationsAddChangedAssets: 1.730ms
         OnDemandSchedulerStart: 1.097ms
         RestoreLoadedAssetsState: 3.436ms
     ReloadSourceAssets: 2.182ms
     UnloadImportedAssets: 0.547ms
     Hotreload: 0.052ms
     FixTempGuids: 0.003ms
     GatherAllCurrentPrimaryArtifactRevisions: 1.160ms
     UnloadStreamsBegin: 0.116ms
     LoadedImportedAssetsSnapshotReleaseGCHandles: 2.558ms
     GetLoadedSourceAssetsSnapshot: 5.245ms
     PersistCurrentRevisions: 0.894ms
     UnloadStreamsEnd: 0.037ms
     Untracked: 4.478ms

After it pass through "Refresh Asset Database"，next lines in Editor.log are:

 Launching external process: /Applications/Unity/Hub/Editor/2020.3.0f1c1/Unity.app/Contents/Tools/UnityShaderCompiler
 Launched and connected shader compiler UnityShaderCompiler after 0.02 seconds
 Initializing Unity extensions:
 Unloading 792 Unused Serialized files (Serialized files now loaded: 0)
 System memory in use before: 485.7 MB.
 System memory in use after: 477.5 MB.

,contentg in Editor.log

Application.AssetDatabase.Refresh Start Refresh completed in 0.610739 seconds. RefreshInfo: RefreshV2(ForceSynchronousImport) scanfilter: RefreshProfiler: Total: 605.911ms InvokeBeforeRefreshCallbacks: 2.302ms ApplyChangesToAssetFolders: 0.069ms Scan: 292.704ms OnSourceAssetsModified: 0.000ms InitializeImportedAssetsSnapshot: 14.062ms GetAllGuidsForCategorization: 1.272ms CategorizeAssets: 259.574ms ImportAndPostprocessOutOfDateAssets: 16.342ms (3.888ms without children) PostProcessAllAssets: 0.000ms ReloadImportedAssets: 0.001ms EnsureUptoDateAssetsAreRegisteredWithGuidPM: 2.955ms InitializingProgressBar: 0.000ms PostProcessAllAssetNotificationsAddChangedAssets: 1.894ms OnDemandSchedulerStart: 4.506ms RestoreLoadedAssetsState: 3.098ms ReloadSourceAssets: 1.239ms UnloadImportedAssets: 0.535ms Hotreload: 0.014ms FixTempGuids: 0.003ms GatherAllCurrentPrimaryArtifactRevisions: 1.019ms UnloadStreamsBegin: 0.042ms LoadedImportedAssetsSnapshotReleaseGCHandles: 2.467ms GetLoadedSourceAssetsSnapshot: 5.309ms PersistCurrentRevisions: 1.001ms UnloadStreamsEnd: 0.038ms GenerateScriptTypeHashes: 18.821ms Untracked: 7.917ms Application.AssetDatabase.Refresh End RefreshInfo: StopAssetImportingV2(ForceSynchronousImport) scanfilter: RefreshProfiler: Total: 5.293ms Refresh completed in 0.564804 seconds. RefreshInfo: RefreshV2(NoUpdateAssetOptions) scanfilter: RefreshProfiler: Total: 564.670ms InvokeBeforeRefreshCallbacks: 0.000ms ApplyChangesToAssetFolders: 0.068ms Scan: 285.565ms OnSourceAssetsModified: 0.000ms InitializeImportedAssetsSnapshot: 12.707ms GetAllGuidsForCategorization: 1.244ms CategorizeAssets: 236.376ms ImportAndPostprocessOutOfDateAssets: 11.438ms (2.198ms without children) PostProcessAllAssets: 0.000ms EnsureUptoDateAssetsAreRegisteredWithGuidPM: 2.978ms InitializingProgressBar: 0.000ms PostProcessAllAssetNotificationsAddChangedAssets: 1.730ms OnDemandSchedulerStart: 1.097ms RestoreLoadedAssetsState: 3.436ms ReloadSourceAssets: 2.182ms UnloadImportedAssets: 0.547ms Hotreload: 0.052ms FixTempGuids: 0.003ms GatherAllCurrentPrimaryArtifactRevisions: 1.160ms UnloadStreamsBegin: 0.116ms LoadedImportedAssetsSnapshotReleaseGCHandles: 2.558ms GetLoadedSourceAssetsSnapshot: 5.245ms PersistCurrentRevisions: 0.894ms UnloadStreamsEnd: 0.037ms Untracked: 4.478ms

After it pass through "Refresh Asset Database"，next lines in Editor.log are:

Launching external process: /Applications/Unity/Hub/Editor/2020.3.0f1c1/Unity.app/Contents/Tools/UnityShaderCompiler Launched and connected shader compiler UnityShaderCompiler after 0.02 seconds Initializing Unity extensions: Unloading 792 Unused Serialized files (Serialized files now loaded: 0) System memory in use before: 485.7 MB. System memory in use after: 477.5 MB.