[Ocfs2-users] Slow OCFS2 file creation / how to make ocfs2 generally faster?
Stefan Priebe - Profihost AG
s.priebe at profihost.ag
Mon Aug 22 09:01:27 PDT 2011
> 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?
Stefan
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