Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-15090

Reduce the overhead of writing undo log records

    XMLWordPrintable

Details

    Description

      oltp_update_index.lua benchmark commits mini transaction 5 times. This causes log_sys->mutex contention.

      First two mini transactions (write of the first undo log record and the creation of the undo log header) can be combined.

      This change was verified to give ~10% better throughput.

      Attachments

        Issue Links

          causes

          Bug - A problem which impairs or prevents the functions of the product. MDEV-22770 trx_undo_report_rename() fails to release page latches

          • 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-25979 Invalid undo page number written to DB_ROLL_PTR

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

          Activity

            People

              marko Marko Mäkelä
              svoj Sergey Vojtovich
              Votes:
              0 Vote for this issue
              Watchers:
              6 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

                Git Integration

                  Error rendering 'com.xiplink.jira.git.jira_git_plugin:git-issue-webpanel'. Please contact your Jira administrators.