[Btrfs-devel] Btrfs kernel module v0.7
Chris Mason
chris.mason at oracle.com
Fri Aug 10 13:45:13 PDT 2007
Hello everyone,
The defrag code in v0.6 seems to have been really good at triggering a
bug in my extent tree allocation code. So, I've put out v0.7 with the
fix. There are also a bunch of defrag refinements and Josef's fsync
improvments included.
To give you an idea of how much the defrag code and related readahead
fixes help:
Time to create 1 million files, 512 bytes each:
v0.4: 3m17s
v0.7: 2m32s
Time to run find . on the directory:
v0.4: 21.60s
v0.7: 3.27s
Unfortunately the time to read all the files with tar isn't much better
because Btrfs is still seeking around the directory name index. I need
to figure out a better way to get around that.
-chris
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