Use RandomAccess for better caching

dotnet · Mar 14, 2024 · 946af08 · 946af08
1 parent c2ad82a
commit 946af08
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/cluster/DotNext.Net.Cluster/Net/Cluster/Consensus/Raft/PersistentState.NodeState.cs b/src/cluster/DotNext.Net.Cluster/Net/Cluster/Consensus/Raft/PersistentState.NodeState.cs
@@ -86,8 +86,9 @@ private NodeState(string fileName, MemoryAllocator<byte> allocator, bool integri
             // reopen handle in asynchronous mode
             handle.Dispose();
 
-            const FileOptions dontSkipBuffer = FileOptions.Asynchronous | FileOptions.SequentialScan;
-            const FileOptions skipBuffer = FileOptions.Asynchronous | FileOptions.WriteThrough | FileOptions.SequentialScan;
+            // FileOptions.RandomAccess to keep the whole file cached in the page cache
+            const FileOptions dontSkipBuffer = FileOptions.Asynchronous | FileOptions.RandomAccess;
+            const FileOptions skipBuffer = FileOptions.Asynchronous | FileOptions.WriteThrough | FileOptions.RandomAccess;
             handle = File.OpenHandle(fileName, FileMode.Open, FileAccess.ReadWrite, FileShare.Read, writeThrough ? skipBuffer : dontSkipBuffer);
 
             // restore state