diff options
Diffstat (limited to 'innobase/srv/srv0start.c')
| -rw-r--r-- | innobase/srv/srv0start.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/innobase/srv/srv0start.c b/innobase/srv/srv0start.c index 5de87038bde..83cde6e6589 100644 --- a/innobase/srv/srv0start.c +++ b/innobase/srv/srv0start.c @@ -1138,10 +1138,32 @@ innobase_start_or_create_for_mysql(void) srv_file_flush_method_str); return(DB_ERROR); } - + + /* Set the maximum number of threads which can wait for a semaphore + inside InnoDB */ +#if defined(__WIN__) || defined(__NETWARE__) + +/* Create less event semaphores because Win 98/ME had difficulty creating +40000 event semaphores. +Comment from Novell, Inc.: also, these just take a lot of memory on +NetWare. */ + srv_max_n_threads = 1000; +#else + if (srv_pool_size >= 8 * 1024) { + /* Here we still have srv_pool_size counted + in kilobytes, srv_boot converts the value to + pages; if buffer pool is less than 8 MB, + assume fewer threads. */ + srv_max_n_threads = 10000; + } else { + srv_max_n_threads = 1000; /* saves several MB of memory, + especially in 64-bit + computers */ + } +#endif /* Note that the call srv_boot() also changes the values of srv_pool_size etc. to the units used by InnoDB internally */ - + err = srv_boot(); if (err != DB_SUCCESS) { |