database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-01 03:47:19 +03:00
Code Activity

Adjust table_open_cache to avoid getting error 24 (too many open files)

Browse Source 
MDEV--15609 engines/funcs.crash_manytables_number crashes with error 24
           (too many open files)
MDEV-10286  Adjustment of table_open_cache according to system limits
            does not work when open-files-limit option is provided

Fixed by adjusting tc_size downwards if there is not enough file
descriptors to use.

Other changes:
- Ensure that there is 30 (was 10) extra file descriptors for other usage
- Decrease TABLE_OPEN_CACHE_MIN to 200 as it's better to have a smaller
  table cache than getting error 24
- Increase minimum of max_connections and table_open_cache from 1 to 10
  as 1 is not usable for any real application, only for testing.
This commit is contained in:
Monty
2018-03-22 20:03:54 +02:00
parent 4d83b01537
commit ca0c96fc89
29 changed files with 193 additions and 85 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
mysql-test/t/myisam.test
View File

@ -1216,9 +1216,9 @@ DROP TABLE t1;
--echo #
--echo # BUG#48438 - crash with error in unioned query against merge table and view...
--echo #
SET GLOBAL table_open_cache=3;
SET GLOBAL table_open_cache=10;
CREATE TABLE t1(a INT);
SELECT 1 FROM t1 AS a1, t1 AS a2, t1 AS a3, t1 AS a4 FOR UPDATE;
SELECT 1 FROM t1 AS a1, t1 AS a2, t1 AS a3, t1 AS a4, t1 AS a5, t1 AS a6, t1 AS a7, t1 AS a8, t1 AS a9, t1 AS a10, t1 AS a11 FOR UPDATE;
SELECT TABLE_ROWS, DATA_LENGTH FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA='test' AND TABLE_NAME='t1';
DROP TABLE t1;