filer: configurable directory list cache size

weed/filesys/dir.go

@@ -30,6 +30,8 @@ var _ = fs.NodeSetattrer(&Dir{})
 
 func (dir *Dir) Attr(ctx context.Context, attr *fuse.Attr) error {
 
+	glog.V(3).Infof("dir Attr %s", dir.Path)
+
 	// https://github.com/bazil/fuse/issues/196
 	attr.Valid = time.Second
 
@@ -40,6 +42,9 @@ func (dir *Dir) Attr(ctx context.Context, attr *fuse.Attr) error {
 
 	item := dir.wfs.listDirectoryEntriesCache.Get(dir.Path)
 	if item != nil && !item.Expired() {
+
+		glog.V(4).Infof("dir Attr cache hit %s", dir.Path)
+
 		entry := item.Value().(*filer_pb.Entry)
 
 		attr.Mtime = time.Unix(entry.Attributes.Mtime, 0)
@@ -51,6 +56,8 @@ func (dir *Dir) Attr(ctx context.Context, attr *fuse.Attr) error {
 		return nil
 	}
 
+	glog.V(3).Infof("dir Attr cache miss %s", dir.Path)
+
 	entry, err := filer2.GetEntry(ctx, dir.wfs, dir.Path)
 	if err != nil {
 		glog.V(2).Infof("read dir %s attr: %v, error: %v", dir.Path, dir.attributes, err)
@@ -175,6 +182,8 @@ func (dir *Dir) Mkdir(ctx context.Context, req *fuse.MkdirRequest) (fs.Node, err
 
 func (dir *Dir) Lookup(ctx context.Context, req *fuse.LookupRequest, resp *fuse.LookupResponse) (node fs.Node, err error) {
 
+	glog.V(4).Infof("dir Lookup %s: %s", dir.Path, req.Name)
+
 	var entry *filer_pb.Entry
 	fullFilePath := path.Join(dir.Path, req.Name)
 
@@ -184,10 +193,14 @@ func (dir *Dir) Lookup(ctx context.Context, req *fuse.LookupRequest, resp *fuse.
 	}
 
 	if entry == nil {
+		glog.V(3).Infof("dir Lookup cache miss %s", fullFilePath)
 		entry, err = filer2.GetEntry(ctx, dir.wfs, fullFilePath)
 		if err != nil {
 			return nil, err
 		}
+		dir.wfs.listDirectoryEntriesCache.Set(fullFilePath, entry, 5*time.Second)
+	} else {
+		glog.V(4).Infof("dir Lookup cache hit %s", fullFilePath)
 	}
 
 	if entry != nil {
@@ -212,7 +225,9 @@ func (dir *Dir) Lookup(ctx context.Context, req *fuse.LookupRequest, resp *fuse.
 
 func (dir *Dir) ReadDirAll(ctx context.Context) (ret []fuse.Dirent, err error) {
 
-	cacheTtl := 3 * time.Second
+	glog.V(3).Infof("dir ReadDirAll %s", dir.Path)
+
+	cacheTtl := 10 * time.Minute
 
 	readErr := filer2.ReadDirAllEntries(ctx, dir.wfs, dir.Path, "", func(entry *filer_pb.Entry, isLast bool) {
 		if entry.IsDirectory {
@@ -222,7 +237,6 @@ func (dir *Dir) ReadDirAll(ctx context.Context) (ret []fuse.Dirent, err error) {
 			dirent := fuse.Dirent{Name: entry.Name, Type: fuse.DT_File}
 			ret = append(ret, dirent)
 		}
-		cacheTtl = cacheTtl + 2 * time.Millisecond
 		dir.wfs.listDirectoryEntriesCache.Set(path.Join(dir.Path, entry.Name), entry, cacheTtl)
 	})
 	if readErr != nil {

weed/filesys/file.go

@@ -36,6 +36,8 @@ func (file *File) fullpath() string {
 
 func (file *File) Attr(ctx context.Context, attr *fuse.Attr) error {
 
+	glog.V(4).Infof("file Attr %s", file.fullpath())
+
 	if err := file.maybeLoadAttributes(ctx); err != nil {
 		return err
 	}
@@ -54,7 +56,7 @@ func (file *File) Attr(ctx context.Context, attr *fuse.Attr) error {
 
 func (file *File) Open(ctx context.Context, req *fuse.OpenRequest, resp *fuse.OpenResponse) (fs.Handle, error) {
 
-	glog.V(3).Infof("%v file open %+v", file.fullpath(), req)
+	glog.V(4).Infof("file %v open %+v", file.fullpath(), req)
 
 	file.isOpen = true
 
@@ -140,10 +142,16 @@ func (file *File) maybeLoadAttributes(ctx context.Context) error {
 	if file.entry == nil || !file.isOpen {
 		item := file.wfs.listDirectoryEntriesCache.Get(file.fullpath())
 		if item != nil && !item.Expired() {
+
+			glog.V(4).Infof("file read attr cache hit %s", file.fullpath())
+
 			entry := item.Value().(*filer_pb.Entry)
 			file.setEntry(entry)
 			// glog.V(1).Infof("file attr read cached %v attributes", file.Name)
 		} else {
+
+			glog.V(3).Infof("file read attr cache miss %s", file.fullpath())
+
 			err := file.wfs.WithFilerClient(ctx, func(client filer_pb.SeaweedFilerClient) error {
 
 				request := &filer_pb.LookupDirectoryEntryRequest{

weed/filesys/wfs.go

@@ -8,13 +8,14 @@ import (
 	"sync"
 	"time"
 
+	"github.com/karlseguin/ccache"
+	"google.golang.org/grpc"
+
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/util"
-	"github.com/karlseguin/ccache"
 	"github.com/seaweedfs/fuse"
 	"github.com/seaweedfs/fuse/fs"
-	"google.golang.org/grpc"
 )
 
 type Option struct {
@@ -26,7 +27,7 @@ type Option struct {
 	TtlSec             int32
 	ChunkSizeLimit     int64
 	DataCenter         string
-	DirListingLimit    int
+	DirListingLimit    int64
 	EntryCacheTtl      time.Duration
 	Umask              os.FileMode
 
@@ -60,7 +61,7 @@ type statsCache struct {
 func NewSeaweedFileSystem(option *Option) *WFS {
 	wfs := &WFS{
 		option:                    option,
-		listDirectoryEntriesCache: ccache.New(ccache.Configure().MaxSize(1024 * 8).ItemsToPrune(100)),
+		listDirectoryEntriesCache: ccache.New(ccache.Configure().MaxSize(option.DirListingLimit * 3).ItemsToPrune(100)),
 		pathToHandleIndex:         make(map[string]int),
 		bufPool: sync.Pool{
 			New: func() interface{} {