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  1. MariaDB Server
  2. MDEV-18746

Reduce the amount of mem_heap_create() or malloc()

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      InnoDB is frequently allocating and deallocating memory during simple operations, such as INSERT or UPDATE. It should be more efficient to use a single mem_heap_t for the whole row operation, maybe row_prebuilt_t::heap. Maybe some dynamic allocations could be avoided altogether. Perhaps we could use one or two preallocated buffers for rec_get_offsets(), possibly in btr_cur_t or page_cur_t, and avoid repeated calls to rec_get_offsets().

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          relates to

          Task - A task that needs to be done. MDEV-14602 Reduce malloc()/free() usage in InnoDB

          • Major - Major loss of function.
          • Confirmed

          Task - A task that needs to be done. MDEV-16232 Use fewer mini-transactions

          • Major - Major loss of function.
          • Stalled

          Task - A task that needs to be done. MDEV-20950 Reduce size of record offsets

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-30289 mtr_t::m_memo is causing frequent memory heap operations

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-32050 UNDO logs still growing for write-intensive workloads

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-33559 matched_rec::block should be allocated from the buffer pool

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

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              Unassigned Unassigned
              marko Marko Mäkelä
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