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| author | unknown <heikki@hundin.mysql.fi> | 2003-10-17 23:44:34 +0300 |
|---|---|---|
| committer | unknown <heikki@hundin.mysql.fi> | 2003-10-17 23:44:34 +0300 |
| commit | 77f45ffe7799848d27a10887ccdfcb2ba509bb59 (patch) | |
| tree | 27c4cf6a0ebf62c4a01fd1fe3028b1d331e84e4a /innobase/srv/srv0start.c | |
| parent | 7a7cbc7db557cc8263622453fc8a52cd9f386647 (diff) | |
| download | mariadb-git-77f45ffe7799848d27a10887ccdfcb2ba509bb59.tar.gz | |
thr0loc.c, srv0start.c, srv0srv.c, srv0srv.h, os0thread.h, ha_innodb.cc:
Backport from 4.1: reduce InnoDB memory consumption if buf pool < 8 MB
sql/ha_innodb.cc:
Backport from 4.1: reduce InnoDB memory consumption if buf pool < 8 MB
innobase/include/os0thread.h:
Backport from 4.1: reduce InnoDB memory consumption if buf pool < 8 MB
innobase/include/srv0srv.h:
Backport from 4.1: reduce InnoDB memory consumption if buf pool < 8 MB
innobase/srv/srv0srv.c:
Backport from 4.1: reduce InnoDB memory consumption if buf pool < 8 MB
innobase/srv/srv0start.c:
Backport from 4.1: reduce InnoDB memory consumption if buf pool < 8 MB
innobase/thr/thr0loc.c:
Backport from 4.1: reduce InnoDB memory consumption if buf pool < 8 MB
Diffstat (limited to 'innobase/srv/srv0start.c')
| -rw-r--r-- | innobase/srv/srv0start.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/innobase/srv/srv0start.c b/innobase/srv/srv0start.c index a85c3615c1b..af4ca71d443 100644 --- a/innobase/srv/srv0start.c +++ b/innobase/srv/srv0start.c @@ -1087,6 +1087,28 @@ innobase_start_or_create_for_mysql(void) 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 * 1024) { + /* Here we still have srv_pool_size counted + in bytes, 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 err = srv_boot(); if (err != DB_SUCCESS) { |