[MDEV-6530] Examine and apply Power8 patches suggested by Stewart Smith Created: 2014-08-05  Updated: 2016-02-16  Resolved: 2016-02-16

Status: Closed
Project: MariaDB Server
Component/s: Storage Engine - InnoDB
Fix Version/s: 10.0.24

Type: Task Priority: Major
Reporter: Sergey Vojtovich Assignee: Axel Schwenke
Resolution: Fixed Votes: 0
Labels: None

Issue Links:
PartOf
includes MDEV-6450 MariaDB crash on Power8 when built wi... Closed
includes MDEV-6515 crash due to assertion on power8 Closed
includes MDEV-6531 MySQL Bug #72809 - InnoDB Linux nativ... Closed
includes MDEV-6532 MySQL Bug#72544 - Incorrect locking f... Closed
includes MDEV-6533 MySQL Bug#72718 - CACHE_LINE_SIZE in ... Closed
includes MDEV-6534 MySQL Bug#72754 - Set thread priority... Closed
is part of MDEV-6478 MariaDB on Power8 Closed

 Description   

See linked tasks for the list of patches.

 Comments   
Comment by Sergey Vojtovich [ 2014-08-05 ]

As we don't use fast mutexes since MDEV-5081 is fixed, we're probably not interested in the following patches:
Bug#72805 - mutex_delay() creating excess memory traffic, GCC mem barrier needed
http://bugs.mysql.com/bug.php?id=72805
Bug#72806 - mutex_delay() missing x86 pause instruction optimization
http://bugs.mysql.com/bug.php?id=72806
Bug#72807 - Set thread priority in my_pthread_fastmutex_lock
http://bugs.mysql.com/bug.php?id=72807

Comment by Sergey Vojtovich [ 2014-08-05 ]

MySQL "Bug#72829 - LOCK_grant is major contention point, leaves 30-40% idle CPU." should have been fixed by Monty long time ago.

Comment by Axel Schwenke [ 2016-02-16 ]

all subtasks closed

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