Commit 605871f5 authored by unknown's avatar unknown
Browse files

Make innodb_thread_concurrency 0 by default, and extend 

 the usable range to 0..1000 (0 disables the thread throttling).


sql/mysqld.cc:
  innodb_thread_concurrency is 0..1000 now, and
   0 (the default) disables the thread throttling.
parent 7b283775

sql/mysqld.cc

+4 −2
Original line number Diff line number Diff line
@@ -5899,9 +5899,11 @@ log and this option does nothing anymore.", 
   (gptr*) &srv_n_spin_wait_rounds,

   0, GET_LONG, REQUIRED_ARG, 20L, 0L, ~0L, 0, 1L, 0},

  {"innodb_thread_concurrency", OPT_INNODB_THREAD_CONCURRENCY,

   "Helps in performance tuning in heavily concurrent environments.",

   "Helps in performance tuning in heavily concurrent environments. "

   "Sets the maximum number of threads allowed inside InnoDB. Value 0"

   " will disable the thread throttling.",

   (gptr*) &srv_thread_concurrency, (gptr*) &srv_thread_concurrency,

   0, GET_LONG, REQUIRED_ARG, 8, 1, 1000, 0, 1, 0},

   0, GET_LONG, REQUIRED_ARG, 8, 0, 1000, 0, 1, 0},

  {"innodb_thread_sleep_delay", OPT_INNODB_THREAD_SLEEP_DELAY,

   "Time of innodb thread sleeping before joining InnoDB queue (usec). Value 0"

    " disable a sleep",