#At file:///home/kgeorge/mysql/work/B54909-5.1-bugteam/ based on revid:georgi.kodinov@stripped
3476 Georgi Kodinov 2010-08-06
Bug #54909: Confusing description about read_buffer_size and
Applied the updated description from Paul's patch.
=== modified file 'support-files/my-innodb-heavy-4G.cnf.sh'
--- a/support-files/my-innodb-heavy-4G.cnf.sh 2009-03-31 14:04:01 +0000
+++ b/support-files/my-innodb-heavy-4G.cnf.sh 2010-08-06 12:08:24 +0000
@@ -109,6 +109,16 @@ binlog_cache_size = 1M
# table which could otherwise use up all memory resources.
max_heap_table_size = 64M
+# Size of the buffer used for doing full table scans of MyISAM tables.
+# Allocated per thread, if a full scan is needed.
+read_buffer_size = 2M
+# When reading rows in sorted order after a sort, the rows are read
+# through this buffer to avoid disk seeks. You can improve ORDER BY
+# performance a lot, if set this to a high value.
+# Allocated per thread, when needed.
+read_rnd_buffer_size = 16M
# Sort buffer is used to perform sorts for some ORDER BY and GROUP BY
# queries. If sorted data does not fit into the sort buffer, a disk
# based merge sort is used instead - See the "Sort_merge_passes"
@@ -310,16 +320,6 @@ server-id = 1
# used for internal temporary disk tables.
key_buffer_size = 32M
-# Size of the buffer used for doing full table scans of MyISAM tables.
-# Allocated per thread, if a full scan is needed.
-read_buffer_size = 2M
-# When reading rows in sorted order after a sort, the rows are read
-# through this buffer to avoid disk seeks. You can improve ORDER BY
-# performance a lot, if set this to a high value.
-# Allocated per thread, when needed.
-read_rnd_buffer_size = 16M
# MyISAM uses special tree-like cache to make bulk inserts (that is,
# INSERT ... SELECT, INSERT ... VALUES (...), (...), ..., and LOAD DATA
# INFILE) faster. This variable limits the size of the cache tree in
Attachment: [text/bzr-bundle] email@example.com
|• bzr commit into mysql-5.1-bugteam branch (Georgi.Kodinov:3476) Bug#54909||Georgi Kodinov||6 Aug|