| commit | aff729969cea3810c2aae773a210c459ffd8d2db | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Wed, 30 Aug 2017 02:04:20 +0000 (29 19:04 -0700) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Wed, 30 Aug 2017 02:04:20 +0000 (29 19:04 -0700) | ||
| tree | b17d9ee5e2f5a77070a44df2dc5431183c97a899 | treesnapshot (tar.gz zip) |
| parent | be36dcd4ab6d5795b3b41e2add42872ef40b31ab | commitdiff |
hammer2 - Micro-optimize file data allocations
* Micro-optimize the preferential offset within the bitmap to allocate
a data block from. This corrects block offsets when buffer cache
buffers are flushed out of order, within reason.
* bpref still needs a ton of work. The current allocator localizes based
on type (inode, directory entry, data, indirect block, etc), but does
not separate inodes spatially so things get jumbled fairly quickly.
* Micro-optimize the preferential offset within the bitmap to allocate
a data block from. This corrects block offsets when buffer cache
buffers are flushed out of order, within reason.
* bpref still needs a ton of work. The current allocator localizes based
on type (inode, directory entry, data, indirect block, etc), but does
not separate inodes spatially so things get jumbled fairly quickly.
| sys/vfs/hammer2/hammer2_disk.h | diffblobblamehistory | |
| sys/vfs/hammer2/hammer2_freemap.c | diffblobblamehistory |