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Revert "context: add experimental code for avoiding tiny extents"

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because this problem is better solved elsewhere.

This reverts commit 11fabd66a84b6631fb39bb6b2c066c689351fc26.
This commit is contained in:
Zygo Blaxell 2024-11-24 20:16:46 -05:00
parent 90d7075358
commit 30a4fb52cb
2 changed files with 0 additions and 10 deletions
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1
docs/event-counters.md
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@ -336,7 +336,6 @@ The `scan` event group consists of operations related to scanning incoming data.
* `scan_eof`: Scan past EOF was attempted.
* `scan_erase_redundant`: Blocks in the hash table were removed because they were removed from the filesystem by dedupe.
* `scan_extent`: An extent was scanned (`scan_one_extent`).
* `scan_extent_tiny`: An extent below 128K that was not the beginning or end of a file was scanned. No action is currently taken for these--they are merely counted.
* `scan_forward`: A logical byte range was scanned (`scan_forward`).
* `scan_found`: An entry was found in the hash table matching a scanned block from the filesystem.
* `scan_hash_hit`: A block was found on the filesystem corresponding to a block found in the hash table.

9
src/bees-context.cc
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@ -300,15 +300,6 @@ BeesContext::scan_one_extent(const BeesFileRange &bfr, const Extent &e)
BEESTRACE("scan extent " << e);
BEESCOUNT(scan_extent);
// EXPERIMENT: Don't bother with tiny extents unless they are the entire file.
// We'll take a tiny extent at BOF or EOF but not in between.
if (e.begin() && e.size() < 128 * 1024 && e.end() != Stat(bfr.fd()).st_size) {
BEESCOUNT(scan_extent_tiny);
// This doesn't work properly with the current architecture,
// so we don't do an early return here.
// return bfr;
}
// We keep moving this method around
auto m_ctx = shared_from_this();