[Ocfs2-users] Slow OCFS2 file creation / how to make ocfs2 generally faster?

[Sunil Mushran]

On 08/22/2011 09:01 AM, Stefan Priebe - Profihost AG wrote:
>
>> What features do you have enabled on disk?
>> debugfs.ocfs2 -R "stats" /dev/sdX
>
> The disks were formated using max-features flag. The output looks like 
> this:
>       Revision: 0.90
>         Mount Count: 0   Max Mount Count: 20
>         State: 0   Errors: 0
>         Check Interval: 0   Last Check: Wed Aug  3 12:20:20 2011
>         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: 8
>         Extended Attributes Inline Size: 256
>         Label: ocfs2
>         UUID: 2E60AF2024744D63848A13417DE66984
>         Hash: 2985671674 (0xb1f5bbfa)
>         DX Seed[0]: 0xd7cb3bf0
>         DX Seed[1]: 0xb630f905
>         DX Seed[2]: 0xc126a149
>         Cluster stack: classic o2cb
>         Inode: 2   Mode: 00   Generation: 2304813421 (0x8960a96d)
>         FS Generation: 2304813421 (0x8960a96d)
>         CRC32: 8a254ba7   ECC: 0896
>         Type: Unknown   Attr: 0x0   Flags: Valid System Superblock
>         Dynamic Features: (0x0)
>         User: 0 (root)   Group: 0 (root)   Size: 0
>         Links: 0   Clusters: 21482248
>         ctime: 0x4e3920e4 -- Wed Aug  3 12:20:20 2011
>         atime: 0x0 -- Thu Jan  1 01:00:00 1970
>         mtime: 0x4e3920e4 -- Wed Aug  3 12:20:20 2011
>         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
>
>> Network latency:
>> cat /sys/kernel/debug/o2net/stats
>> Number of locks, etc:
>> cat /sys/kernel/debug/o2dlm/DOMAIN/dlm_state
> /sys/kernel/debug/ is empty - what do i miss?
>


mount -t debugfs none /sys/kernel/debug