diff --git a/kernel/cache/ial.go b/kernel/cache/ial.go
index 92de587fb..2cb72c03c 100644
--- a/kernel/cache/ial.go
+++ b/kernel/cache/ial.go
@@ -24,13 +24,13 @@ import (
 )
 
 var docIALCache, _ = ristretto.NewCache(&ristretto.Config{
-	NumCounters: 102400,
-	MaxCost:     10240,
+	NumCounters: 1024 * 100,
+	MaxCost:     1024 * 1024 * 200,
 	BufferItems: 64,
 })
 
 func PutDocIAL(p string, ial map[string]string) {
-	docIALCache.Set(p, ial, 1)
+	docIALCache.Set(p, ial, 128)
 }
 
 func GetDocIAL(p string) (ret map[string]string) {
@@ -55,13 +55,13 @@ func ClearDocsIAL() {
 }
 
 var blockIALCache, _ = ristretto.NewCache(&ristretto.Config{
-	NumCounters: 102400,
-	MaxCost:     10240,
+	NumCounters: 1024 * 1000,
+	MaxCost:     1024 * 1024 * 200,
 	BufferItems: 64,
 })
 
 func PutBlockIAL(id string, ial map[string]string) {
-	blockIALCache.Set(id, ial, 1)
+	blockIALCache.Set(id, ial, 128)
 }
 
 func GetBlockIAL(id string) (ret map[string]string) {
diff --git a/kernel/model/file.go b/kernel/model/file.go
index 8e3de81c0..f2e720721 100644
--- a/kernel/model/file.go
+++ b/kernel/model/file.go
@@ -38,6 +38,7 @@ import (
 	"github.com/88250/lute/parse"
 	util2 "github.com/88250/lute/util"
 	"github.com/facette/natsort"
+	jsoniter "github.com/json-iterator/go"
 	"github.com/siyuan-note/filelock"
 	"github.com/siyuan-note/logging"
 	"github.com/siyuan-note/riff"
@@ -117,18 +118,28 @@ func (box *Box) docIAL(p string) (ret map[string]string) {
 
 	filePath := filepath.Join(util.DataDir, box.ID, p)
 
-	data, err := filelock.ReadFile(filePath)
-	if util.IsCorruptedSYData(data) {
-		box.moveCorruptedData(filePath)
-		return nil
-	}
+	filelock.Lock(filePath)
+	defer filelock.Unlock(filePath)
+
+	file, err := os.Open(filePath)
 	if err != nil {
-		logging.LogErrorf("read file [%s] failed: %s", p, err)
+		logging.LogErrorf("open file [%s] failed: %s", p, err)
 		return nil
 	}
-	ret = filesys.ReadDocIAL(data)
+	defer file.Close()
+
+	iter := jsoniter.Parse(jsoniter.ConfigCompatibleWithStandardLibrary, file, 512)
+	for field := iter.ReadObject(); field != ""; field = iter.ReadObject() {
+		if field == "Properties" {
+			iter.ReadVal(&ret)
+			break
+		} else {
+			iter.Skip()
+		}
+	}
+
 	if 1 > len(ret) {
-		logging.LogWarnf("tree [%s] is corrupted", filePath)
+		logging.LogWarnf("properties not found in file [%s]", p)
 		box.moveCorruptedData(filePath)
 		return nil
 	}
@@ -241,6 +252,12 @@ func ListDocTree(boxID, listPath string, sortMode int, flashcard, showHidden boo
 	//pprof.StartCPUProfile(cpuProfile)
 	//defer pprof.StopCPUProfile()
 
+	start1 := time.Now()
+	defer func() {
+		elapsed := time.Now().Sub(start1).Milliseconds()
+		logging.LogInfof("list doc tree elapsed [%dms]", elapsed)
+	}()
+
 	ret = []*File{}
 
 	var deck *riff.Deck