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hash: reduce hash table extent size to 128KB

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The 16MB hash table extent size did not serve any useful defragmentation
or compression purpose, and for very small filesystems (under 100GB),
16MB is much larger than necessary.

Signed-off-by: Zygo Blaxell <bees@furryterror.org>
This commit is contained in:
Zygo Blaxell
2018-10-08 23:31:16 -04:00
parent c01f129eee
commit 924008603e
3 changed files with 4 additions and 4 deletions
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src/bees.h
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@ -56,7 +56,7 @@ const off_t BLOCK_SIZE_MAX_TEMP_FILE = 1024 * 1024 * 1024;
const off_t BLOCK_SIZE_HASHTAB_BUCKET = BLOCK_SIZE_MMAP;
// Extent size for hash table (since the nocow file attribute does not seem to be working today)
const off_t BLOCK_SIZE_HASHTAB_EXTENT = 16 * 1024 * 1024;
const off_t BLOCK_SIZE_HASHTAB_EXTENT = BLOCK_SIZE_MAX_COMPRESSED_EXTENT;
// Bytes per second we want to flush (8GB every two hours)
const double BEES_FLUSH_RATE = 8.0 * 1024 * 1024 * 1024 / 7200.0;