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Bug#55001 Change in behavior: thread_concurrency (docs,

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example files)

The system variable 'thread_concurrency' has been
(re-)enabled on all platforms, to prevent startup
errors.

'thread_concurrency' is unused and has no effect,
on any platform, in MySQL 5.1 and later versions.  It 
will be deprecated, and removed, in context of 
worklog WL#5265
This commit is contained in:
Magne Mahre
2010-08-16 15:05:01 +02:00
parent 2086e1664f
commit 19c9957367
3 changed files with 5 additions and 13 deletions
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7
sql/sys_vars.cc
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@ -1617,14 +1617,17 @@ static Sys_var_charptr Sys_socket(
READ_ONLY GLOBAL_VAR(mysqld_unix_port), CMD_LINE(REQUIRED_ARG),
IN_FS_CHARSET, DEFAULT(0));
#ifdef HAVE_THR_SETCONCURRENCY
/*
thread_concurrency is a no-op on all platforms since
MySQL 5.1. It will be removed in the context of
WL#5265
*/
static Sys_var_ulong Sys_thread_concurrency(
"thread_concurrency",
"Permits the application to give the threads system a hint for "
"the desired number of threads that should be run at the same time",
READ_ONLY GLOBAL_VAR(concurrency), CMD_LINE(REQUIRED_ARG),
VALID_RANGE(1, 512), DEFAULT(DEFAULT_CONCURRENCY), BLOCK_SIZE(1));
#endif
static Sys_var_ulong Sys_thread_stack(
"thread_stack", "The stack size for each thread",