[Ocfs2-users] Amazing slow ocfs2

[admin at wset.edu.pl]

Hello guys
Today i saw my ocfs2 start working amazing slow i don`t know what happened 
but looks like problem... i can get max 200kb/s.....
MAILDIR1 ~ # cat /proc/mounts
/dev/mapper/mpath1 /mnt/EMC ocfs2 
rw,noatime,_netdev,heartbeat=local,nointr,data=writeback,errors=remount-ro,commit=30,localalloc=23,usrquota,coherency=full,user_xattr,acl 
0 0

MAILDIR1 ~ # debugfs.ocfs2 -R "stats" /dev/dm-0
Revision: 0.90
Mount Count: 0   Max Mount Count: 20
State: 0   Errors: 0
Check Interval: 0   Last Check: Sun Feb 24 19:33:26 2013
Creator OS: 0
Feature Compat: 3 backup-super strict-journal-super
Feature Incompat: 16208 sparse extended-slotmap inline-data metaecc xattr 
indexed-dirs refcount discontig-bg
Tunefs Incomplete: 0
Feature RO compat: 7 unwritten usrquota grpquota
Root Blknum: 5   System Dir Blknum: 6
First Cluster Group Blknum: 3
Block Size Bits: 12   Cluster Size Bits: 12
Max Node Slots: 16
Extended Attributes Inline Size: 256
Label: MAILDIR
UUID: A7398EDB6A964EFBB3A316E690A48E3B
Hash: 1702791194 (0x657e881a)
DX Seed[0]: 0x8a032eea
DX Seed[1]: 0xa6c80977
DX Seed[2]: 0xef570dd3
Cluster stack: classic o2cb
Inode: 2   Mode: 00   Generation: 2353752938 (0x8c4b6b6a)
FS Generation: 2353752938 (0x8c4b6b6a)
CRC32: de585fe0   ECC: 048d
Type: Unknown   Attr: 0x0   Flags: Valid System Superblock
Dynamic Features: (0x0)
User: 0 (root)   Group: 0 (root)   Size: 0
Links: 0   Clusters: 422137056
ctime: 0x4f928b86 -- Sat Apr 21 12:27:18 2012
atime: 0x0 -- Thu Jan  1 01:00:00 1970
mtime: 0x4f928b86 -- Sat Apr 21 12:27:18 2012
dtime: 0x0 -- Thu Jan  1 01:00:00 1970
ctime_nsec: 0x00000000 -- 0
atime_nsec: 0x00000000 -- 0
mtime_nsec: 0x00000000 -- 0
Refcount Block: 0
Last Extblk: 0   Orphan Slot: 0
Sub Alloc Slot: Global   Sub Alloc Bit: 65535

MAILDIR1 ~ # hdparm -tT /dev/dm-0
/dev/dm-0:
Timing cached reads:   17094 MB in  2.00 seconds = 8555.65 MB/sec
Timing buffered disk reads: 706 MB in  3.00 seconds = 435.22 MB/sec

But when i try copy anything to this ocfs2 got max 200kb/s
Anyone know what is wrong?

Thanks