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  1. Qt
  2. QTBUG-113613

[REG: 5->6] QMultiHash erase performance degraded from milliseconds to minutes

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    • 9cef9df82 (dev)

    Description

      Performance seems to depend a lot on the hash value. Some values are on similar level and others much worse.

      This example completes in about 300ms in Qt 5.15, but takes way too long with Qt 6.

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          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-130309 QSortFilterProxyModel invalidate is slow when there's a large number of persistent indicies

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
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              thiago Thiago Macieira
              poikelin Joni Poikelin
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                Resolved:

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