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  1. WiredTiger
  2. WT-1912

Move eviction outside transactions

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: WT2.6.0
    • Labels:
      None
    • # Replies:
      4
    • Last comment by Customer:
      true

      Description

      For applications doing explicit snapshot transactions, WiredTiger should check for a full cache before allocating a snapshot. Otherwise, transactions will block while reading pages with an active transaction, leading to less effective eviction and more conflicts between concurrent transactions.

        Issue Links

          Activity

          Hide
          michael.cahill Michael Cahill added a comment -
          Show
          michael.cahill Michael Cahill added a comment - Code review: https://github.com/wiredtiger/wiredtiger/pull/1924
          Hide
          xgen-internal-githook Githook User added a comment -

          Author:

          {u'username': u'michaelcahill', u'name': u'Michael Cahill', u'email': u'michael.cahill@mongodb.com'}

          Message: Move eviction outside transactions.

          refs WT-1912
          Branch: develop
          https://github.com/wiredtiger/wiredtiger/commit/5d61a71b5e73ceba6d066669949e8e6353b66c07

          Show
          xgen-internal-githook Githook User added a comment - Author: {u'username': u'michaelcahill', u'name': u'Michael Cahill', u'email': u'michael.cahill@mongodb.com'} Message: Move eviction outside transactions. refs WT-1912 Branch: develop https://github.com/wiredtiger/wiredtiger/commit/5d61a71b5e73ceba6d066669949e8e6353b66c07
          Hide
          xgen-internal-githook Githook User added a comment -

          Author:

          {u'username': u'michaelcahill', u'name': u'Michael Cahill', u'email': u'michael.cahill@mongodb.com'}

          Message: Don't start a transaction when reading a page if eviction is prohibited.

          Fixes a deadlock introduced by WT-1912 but should also improve performance
          generally.
          Branch: develop
          https://github.com/wiredtiger/wiredtiger/commit/64f304ef5c13383d5989078541734b305f6a6400

          Show
          xgen-internal-githook Githook User added a comment - Author: {u'username': u'michaelcahill', u'name': u'Michael Cahill', u'email': u'michael.cahill@mongodb.com'} Message: Don't start a transaction when reading a page if eviction is prohibited. Fixes a deadlock introduced by WT-1912 but should also improve performance generally. Branch: develop https://github.com/wiredtiger/wiredtiger/commit/64f304ef5c13383d5989078541734b305f6a6400
          Hide
          xgen-internal-githook Githook User added a comment -

          Author:

          {u'username': u'michaelcahill', u'name': u'Michael Cahill', u'email': u'michael.cahill@mongodb.com'}

          Message: SERVER-18875 Don't keep deleted pages during a checkpoint. Sync transaction up with WiredTiger 2.6 to ease back-porting, including picking up WT-1912.
          Branch: mongodb-3.0
          https://github.com/wiredtiger/wiredtiger/commit/3751941f5339b257d9fd9c19879f1a901facfbb6

          Show
          xgen-internal-githook Githook User added a comment - Author: {u'username': u'michaelcahill', u'name': u'Michael Cahill', u'email': u'michael.cahill@mongodb.com'} Message: SERVER-18875 Don't keep deleted pages during a checkpoint. Sync transaction up with WiredTiger 2.6 to ease back-porting, including picking up WT-1912 . Branch: mongodb-3.0 https://github.com/wiredtiger/wiredtiger/commit/3751941f5339b257d9fd9c19879f1a901facfbb6

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              Dates

              • Created:
                Updated:
                Resolved:
                Days since reply:
                1 year, 51 weeks, 3 days ago
                Date of 1st Reply: