perf(db): Sort data for IN before chunking

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

diff --git a/lib/private/Files/Cache/Cache.php b/lib/private/Files/Cache/Cache.php
index 8f0f962a3b7717a85b489fea3d1fb19f8d5d6079..053856afa4f6f795d78b7b12fb1da895c4b2ca05 100644 (file)
--- a/lib/private/Files/Cache/Cache.php
+++ b/lib/private/Files/Cache/Cache.php
@@ -620,6 +620,9 @@ class Cache implements ICache {
                $query->delete('filecache')
                        ->whereParentInParameter('parentIds');
 
+               // Sorting before chunking allows the db to find the entries close to each
+               // other in the index
+               sort($parentIds, SORT_NUMERIC);
                foreach (array_chunk($parentIds, 1000) as $parentIdChunk) {
                        $query->setParameter('parentIds', $parentIdChunk, IQueryBuilder::PARAM_INT_ARRAY);
                        $query->execute();