lp://staging/~vlad-lesin/percona-server/5.5-bug-1038940-table_cache_speed_up

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On hold for merging into lp://staging/percona-server/5.5

Laurynas Biveinis (community): Needs Fixing on 2013-03-25

Stewart Smith: Pending requested 2013-01-03

Diff: 320 lines (+116/-34)

10 files modified

Percona-Server/storage/myisam/ha_myisam.cc (+3/-0)
Percona-Server/storage/myisam/mi_close.c (+1/-1)
Percona-Server/storage/myisam/mi_dbug.c (+3/-3)
Percona-Server/storage/myisam/mi_keycache.c (+3/-3)
Percona-Server/storage/myisam/mi_open.c (+67/-13)
Percona-Server/storage/myisam/mi_panic.c (+24/-8)
Percona-Server/storage/myisam/mi_static.c (+1/-1)
Percona-Server/storage/myisam/myisamchk.c (+6/-0)
Percona-Server/storage/myisam/myisamdef.h (+3/-3)
Percona-Server/storage/myisam/myisampack.c (+5/-2)

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Bug #1038940: table_open_cache increasing leads to performance regression

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451. By Vlad Lesin on 2013-02-24

As the number of open tables is increased, table lookup
(testing if a table is already open) and (in particular)
the case when a table is not open, became increasingly more
expensive.

The problem was caused by the open table lookup mechanism,
which was based on traversing a linked list comparing the
file names.

As the list was replaced by a hash table, the lookup
time dropped significantly when used on systems with
a large number of open tables.

The original patch can be found here:
http://lists.mysql.com/commits/121507

450. By <email address hidden> on 2013-02-20

Merge lp:~laurynas-biveinis/percona-server/bug1117067-5.5

449. By <email address hidden> on 2013-02-20

Merge lp:~akopytov/percona-server/bug1125259

448. By <email address hidden> on 2013-02-20

Merge lp:~laurynas-biveinis/percona-server/bug1089265-5.5

447. By <email address hidden> on 2013-02-19

Merge lp:~gl-az/percona-server/BT-26980-5.5-bug1068210

446. By Alexey Kopytov on 2013-02-15

Bug #1126077: Remove clang warnings

Fixed an annoying warning in the InnoDB code produced by clang.

This is a backport from 5.6.

445. By <email address hidden> on 2013-02-14

Merge lp:~sergei.glushchenko/percona-server/55-tp

444. By <email address hidden> on 2013-02-14

Empty merge from Percona Server 5.1

443. By <email address hidden> on 2013-02-13

Empty merge from Percona Server 5.1

442. By <email address hidden> on 2013-02-13

Empty merge from Percona Server 5.1