Messages in this thread | | | Subject | [RFC] [PATCH 0/4]Multiple block allocation and delayed allocation for ext3 | From | Mingming Cao <> | Date | Sun, 17 Jul 2005 10:40:02 -0700 |
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Hi All,
Here are the updated patches to support multiple block allocation and delayed allocation for ext3 done by me, Badari and Suparna.
[PATCH 1/4] -- multiple block allocation for current ext3. (ext3_get_blocks()).
[PATCH 2/4] -- adding delayed allocation for writeback mode
[PATCH 3/4] -- generic support for cluster pages together in mapge_writepages() to make use of getblocks()
[PATCH 4/4] -- support multiple block allocation for ext3 writeback mode through writepages().
Have done initial testing on dbench and tiobench on a 2.6.11 version of this patch set. Dbench 8 thread throughput result is increased by 20% with this patch set.
dbench comparison: (ext3-dm represents ext3+thispatchset) http://www.sudhaa.com/~ram/ols2005presentation/dbench.jpg tiobench comparison: http://www.sudhaa.com/~ram/ols2005presentation/tio_seq_write.jpg
Todo: - bmap() support for delayed allocation - page reserve flag to indicate the delayed allocation - ordered mode support for delayed allocation - "bh" support to enable blocksize = 1k/2k filesystems
Cheers,
Mingming
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