MDEV-5205 - MariaDB does not start if more than 128 cpu's are available

- thread_pool_size command line option upper limit increased to 100 000
  (same as for max_connections)
- thread_pool_size system variable upper limit is maximum of 128 or
  the value given at command line
- thread groups are now allocated dynamically

Different limit for command line option and system variable was done to
avoid additional mutex for all_groups and threadpool_max_size.

1 files changed, 1 insertions, 0 deletions

diff --git a/sql/threadpool_common.cc b/sql/threadpool_common.cc
index 5be06f0bdc8..9e0cb07b86c 100644
--- a/sql/threadpool_common.cc
+++ b/sql/threadpool_common.cc
@@ -30,6 +30,7 @@
 uint threadpool_min_threads;
 uint threadpool_idle_timeout;
 uint threadpool_size;
+uint threadpool_max_size;
 uint threadpool_stall_limit;
 uint threadpool_max_threads;
 uint threadpool_oversubscribe;