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Fix performance

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Shadowghost
2026-06-12 08:09:10 +02:00
parent 95de28cdda
commit 0aeee8233b
3 changed files with 52 additions and 15 deletions
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50
Emby.Server.Implementations/Library/UserDataManager.cs
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@@ -259,15 +259,53 @@ namespace Emby.Server.Implementations.Library
ArgumentNullException.ThrowIfNull(user);
var result = new Dictionary<Guid, VersionResumeData>();
// Candidate primaries: a directly queried version (PrimaryVersionId set) keeps its own data.
// Linked alternates are already known in memory; only the local-alternate existence check
// would otherwise hit the database (one query per item via Video.HasLocalAlternateVersions),
// so collect those ids and resolve them all in a single query below.
List<Video>? candidates = null;
List<Guid>? localProbeIds = null;
foreach (var item in items)
{
if (item is not Video video || video.PrimaryVersionId.HasValue)
{
continue;
}
(candidates ??= []).Add(video);
if (video.LinkedAlternateVersions.Length == 0)
{
(localProbeIds ??= []).Add(video.Id);
}
}
if (candidates is null)
{
return result;
}
HashSet<Guid>? withLocalAlternates = null;
if (localProbeIds is not null)
{
using var dbContext = _repository.CreateDbContext();
withLocalAlternates = dbContext.LinkedChildren
.Where(lc => lc.ChildType == Jellyfin.Database.Implementations.Entities.LinkedChildType.LocalAlternateVersion
&& localProbeIds.Contains(lc.ParentId))
.Select(lc => lc.ParentId)
.Distinct()
.ToHashSet();
}
List<(Guid PrimaryId, IReadOnlyList<Video> Versions)>? versionGroups = null;
List<BaseItem>? allVersions = null;
foreach (var item in items)
foreach (var video in candidates)
{
// Only primary items aggregate over their versions; a directly queried version keeps its own data.
if (item is not Video video
|| video.PrimaryVersionId.HasValue
|| (video.LinkedAlternateVersions.Length == 0 && !video.HasLocalAlternateVersions))
// Only items that actually have alternate versions aggregate over them.
if (video.LinkedAlternateVersions.Length == 0
&& (withLocalAlternates is null || !withLocalAlternates.Contains(video.Id)))
{
continue;
}
@@ -278,7 +316,7 @@ namespace Emby.Server.Implementations.Library
continue;
}
(versionGroups ??= []).Add((item.Id, versions));
(versionGroups ??= []).Add((video.Id, versions));
(allVersions ??= []).AddRange(versions);
}