Messages in this thread | | | Date | Fri, 4 Sep 2009 12:27:35 -0400 (EDT) | From | Christoph Lameter <> | Subject | 2.6.31-rc8: CIFS with 5 seconds hiccups |
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This is on 32 bit x86 on a Dell 1950
After mouting a cifs share we have 5 second hiccups. Typical log output when doing a simple "ls /mnt":
Sep 4 16:21:43 rd-spare kernel: fs/cifs/transport.c: For smb_command 50 Sep 4 16:21:43 rd-spare kernel: fs/cifs/transport.c: Sending smb: total_len 118 Sep 4 16:21:43 rd-spare kernel: fs/cifs/inode.c: CIFS VFS: leaving cifs_revalidate (xid = 258) rc = 0 Sep 4 16:21:43 rd-spare kernel: fs/cifs/dir.c: CIFS VFS: in cifs_lookup as Xid: 263 with uid: 0 Sep 4 16:21:43 rd-spare kernel: fs/cifs/dir.c: parent inode = 0xf58d2e60 name is: AutoWire.bmp and dentry = 0xf5adb63c Sep 4 16:21:43 rd-spare kernel: fs/cifs/dir.c: NULL inode in lookup Sep 4 16:21:43 rd-spare kernel: fs/cifs/dir.c: Full path: \AutoWire.bmp inode = 0x(null) Sep 4 16:21:43 rd-spare kernel: fs/cifs/inode.c: Getting info on \AutoWire.bmp Sep 4 16:21:43 rd-spare kernel: fs/cifs/transport.c: For smb_command 50 Sep 4 16:21:43 rd-spare kernel: fs/cifs/transport.c: Sending smb: total_len 104
---- 5 second hiccup
Sep 4 16:21:48 rd-spare kernel: fs/cifs/connect.c: rfc1002 length 0xce Sep 4 16:21:48 rd-spare kernel: fs/cifs/connect.c: rfc1002 length 0xc0 Sep 4 16:21:48 rd-spare kernel: fs/cifs/inode.c: inode 0xf5876518 old_time=26000 new_time=32751 Sep 4 16:21:48 rd-spare kernel: fs/cifs/inode.c: cifs_revalidate - inode unchanged Sep 4 16:21:48 rd-spare kernel: fs/cifs/file.c: CIFS VFS: in cifs_writepages as Xid: 264 with uid: 0 Sep 4 16:21:48 rd-spare kernel: fs/cifs/file.c: CIFS VFS: leaving cifs_writepages (xid = 264) rc = 0 Sep 4 16:21:48 rd-spare kernel: fs/cifs/inode.c: CIFS VFS: leaving cifs_revalidate (xid = 262) rc = 0 Sep 4 16:21:48 rd-spare kernel: fs/cifs/inode.c: CIFS VFS: in cifs_revalidate as Xid: 265 with uid: 0 Sep 4 16:21:48 rd-spare kernel: fs/cifs/inode.c: Revalidate: \Akamai Headsets.doc inode 0xf5876518 count 2 dentry: 0xf5ada8d0 d_time 260 00 jiffies 32751 Sep 4 16:21:48 rd-spare kernel: fs/cifs/inode.c: CIFS VFS: leaving cifs_revalidate (xid = 265) rc = 0 Sep 4 16:21:48 rd-spare kernel: fs/cifs/inode.c: CIFS VFS: in cifs_revalidate as Xid: 266 with uid: 0 Sep 4 16:21:48 rd-spare kernel: fs/cifs/inode.c: Revalidate: \Akamai Headsets.doc inode 0xf5876518 count 2 dentry: 0xf5ada8d0 d_time 260 00 jiffies 32751
This is happening intermittently on a variety of hosts.
cat /proc/fs/cifs/DebugData
Display Internal CIFS Data Structures for Debugging --------------------------------------------------- CIFS Version 1.60 Active VFS Requests: 2 Servers: 1) Name: 10.2.4.64 Domain: W2K Uses: 1 OS: Windows Server 2003 R2 3790 Service Pack 2 NOS: Windows Server 2003 R2 5.2 Capability: 0x1f3fd SMB session status: 1 TCP status: 1 Local Users To Server: 1 SecMode: 0x3 Req On Wire: 2 Shares: 1) \\chiprodfs2\company Mounts: 1 Type: NTFS DevInfo: 0x20 Attributes: 0x700ff PathComponentMax: 255 Status: 0x1 type: DISK
MIDs: State: 2 com: 50 pid: 5951 tsk: f756d1b0 mid 277 State: 2 com: 50 pid: 6044 tsk: f69d4760 mid 278
cat /proc/fs/cifs/Stats
Resources in use CIFS Session: 1 Share (unique mount targets): 1 SMB Request/Response Buffer: 5 Pool size: 5 SMB Small Req/Resp Buffer: 1 Pool size: 30 Operations (MIDs): 2
0 session 0 share reconnects Total vfs operations: 525 maximum at one time: 3
1) \\chiprodfs2\company SMBs: 305 Oplock Breaks: 0 Reads: 0 Bytes: 0 Writes: 0 Bytes: 0 Flushes: 0 Locks: 0 HardLinks: 0 Symlinks: 0 Opens: 0 Closes: 0 Deletes: 0 Posix Opens: 0 Posix Mkdirs: 0 Mkdirs: 0 Rmdirs: 0 Renames: 0 T2 Renames 0 FindFirst: 2 FNext 0 FClose 0
What is this ???
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