Make innodb_thread_concurrency 0 by default, and extend

 the usable range to 0..1000 (0 disables the thread throttling).
parent 30c9ab16
...@@ -5899,9 +5899,11 @@ log and this option does nothing anymore.", ...@@ -5899,9 +5899,11 @@ log and this option does nothing anymore.",
(gptr*) &srv_n_spin_wait_rounds, (gptr*) &srv_n_spin_wait_rounds,
0, GET_LONG, REQUIRED_ARG, 20L, 0L, ~0L, 0, 1L, 0}, 0, GET_LONG, REQUIRED_ARG, 20L, 0L, ~0L, 0, 1L, 0},
{"innodb_thread_concurrency", OPT_INNODB_THREAD_CONCURRENCY, {"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, (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, {"innodb_thread_sleep_delay", OPT_INNODB_THREAD_SLEEP_DELAY,
"Time of innodb thread sleeping before joining InnoDB queue (usec). Value 0" "Time of innodb thread sleeping before joining InnoDB queue (usec). Value 0"
" disable a sleep", " disable a sleep",
......
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