Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-11378

AliSQL: [Perf] Issue#23 MERGE INNODB AIO REQUEST

Details

    Description

      Description:
      		 
      ------------
      		 
      The InnoDB engine support native AIO and simulated AIO on linux platform.
      		 
      Native AIO use io_submit that glibc supplied to request IO.
      		 
      But InnoDB engine requested AIO one by one through io_submit when trigger read-ahead,
      		 
      so it is a little inefficiency.
      		 
       
      		 
      Solution:
      		 
      ---------
      		 
      We buffered the AIO requests, then io_submit all.
      		 
      For example: when linear-ahead. we buffered next 64 pages io requests,
      		 
      at last, io_submit all io requests.

      https://github.com/alibaba/AliSQL/commit/4c9d1c72b9db5f7d2267906e0fa6d66948f5dc6c

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-26547 Restoring InnoDB buffer pool dump is single-threaded for no reason

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-30986 Slow full index scan in 10.6 vs 10.5 for the (slow) I/O-bound case

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

          Bug - A problem which impairs or prevents the functions of the product. MDEV-32067 InnoDB linear read ahead had better be logical

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

          Task - A task that needs to be done. MDEV-16526 Overhaul the InnoDB page flushing

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-31095 Create separate tpool thread for async aio

          • Major - Major loss of function.
          • Closed

          New Feature - A new feature of the product, which has yet to be developed. MDEV-31492 Provide a way to "pin" InnoDB table in memory

          • Major - Major loss of function.
          • Open

          Activity

            Transition Time In Source Status Execution Times
            Julien Fritsch made transition -
            Open Needs Feedback
            		1834d 5h 26m 1
            Marko Mäkelä made transition -
            Needs Feedback Open
            		496d 22h 29m 1

            People

              marko Marko Mäkelä
              svoj Sergey Vojtovich
              Votes:
              5 Vote for this issue
              Watchers:
              11 Start watching this issue

              Dates

                Created:
                Updated:

                Git Integration

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