mariadb/extra
Marko Mäkelä 1a6f708ec5 MDEV-15058: Deprecate and ignore innodb_buffer_pool_instances
Our benchmarking efforts indicate that the reasons for splitting the
buf_pool in commit c18084f71b
have mostly gone away, possibly as a result of
mysql/mysql-server@ce6109ebfd
or similar work.

Only in one write-heavy benchmark where the working set size is
ten times the buffer pool size, the buf_pool->mutex would be
less contended with 4 buffer pool instances than with 1 instance,
in buf_page_io_complete(). That contention could be alleviated
further by making more use of std::atomic and by splitting
buf_pool_t::mutex further (MDEV-15053).

We will deprecate and ignore the following parameters:

	innodb_buffer_pool_instances
	innodb_page_cleaners

There will be only one buffer pool and one page cleaner task.

In a number of INFORMATION_SCHEMA views, columns that indicated
the buffer pool instance will be removed:

	information_schema.innodb_buffer_page.pool_id
	information_schema.innodb_buffer_page_lru.pool_id
	information_schema.innodb_buffer_pool_stats.pool_id
	information_schema.innodb_cmpmem.buffer_pool_instance
	information_schema.innodb_cmpmem_reset.buffer_pool_instance
2020-02-12 14:45:21 +02:00
..
aws_sdk
crc32-vpmsum
crc32_armv8_neon
mariabackup MDEV-15058: Deprecate and ignore innodb_buffer_pool_instances 2020-02-12 14:45:21 +02:00
readline
wolfssl silence a warning in WolfSSL. 2020-01-21 09:20:59 +01:00
charset2html.c
CMakeLists.txt
comp_err.c longer regex error messages 2019-12-21 10:34:02 +01:00
innochecksum.cc
my_print_defaults.c
mysql_waitpid.c
mysqld_safe_helper.c
perror.c
replace.c
resolve_stack_dump.c
resolveip.c