1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
#
# MDEV-29445: Reorganize buffer pool (and remove chunks)
#
set global innodb_adaptive_hash_index=ON;
select @@innodb_buffer_pool_size;
@@innodb_buffer_pool_size
8388608
set global innodb_buffer_pool_size = 9437184;
set global innodb_buffer_pool_size = 10485760;
select @@innodb_buffer_pool_size;
@@innodb_buffer_pool_size
10485760
create table t1 (id int primary key, val int not null)
ENGINE=InnoDB ROW_FORMAT=COMPRESSED;
create table t2 (id int primary key, val int not null)
ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=$kbs;
SET STATEMENT foreign_key_checks=0, unique_checks=0 FOR
INSERT INTO t1 SELECT seq*4,seq*4 FROM seq_1_to_262144;
SET STATEMENT foreign_key_checks=0, unique_checks=0 FOR
INSERT INTO t2 SELECT seq*4,seq*4 FROM seq_1_to_16384;
SELECT @@GLOBAL.innodb_adaptive_hash_index;
@@GLOBAL.innodb_adaptive_hash_index
1
SET STATEMENT max_statement_time=1e-9 FOR
SET GLOBAL innodb_buffer_pool_size = 7340032;
SELECT @@GLOBAL.innodb_adaptive_hash_index;
@@GLOBAL.innodb_adaptive_hash_index
1
FOUND 1 /innodb_buffer_pool_size=7m.*resized from|innodb_buffer_pool_size change aborted/ in mysqld.1.err
set global innodb_buffer_pool_size = 7340032;
select count(val) from t1;
count(val)
262144
select count(val) from t2;
count(val)
16384
set global innodb_adaptive_hash_index=OFF;
set global innodb_buffer_pool_size = 24117248;
set global innodb_buffer_pool_size = 26214400;
Warnings:
Warning 1292 Truncated incorrect innodb_buffer_pool_size value: '26214400'
select @@innodb_buffer_pool_size;
@@innodb_buffer_pool_size
25165824
select count(val) from t1;
count(val)
262144
select count(val) from t2;
count(val)
16384
drop table t1,t2;
SET GLOBAL innodb_max_purge_lag_wait = 0;
SET @save_pct= @@GLOBAL.innodb_max_dirty_pages_pct;
SET @save_pct_lwm= @@GLOBAL.innodb_max_dirty_pages_pct_lwm;
SET GLOBAL innodb_max_dirty_pages_pct_lwm = 0.0;
SET GLOBAL innodb_max_dirty_pages_pct = 0.0;
SET GLOBAL innodb_buffer_pool_size = @old_innodb_buffer_pool_size;
SET GLOBAL innodb_adaptive_hash_index = @old_innodb_adaptive_hash_index;
SET GLOBAL innodb_max_dirty_pages_pct = @save_pct;
SET GLOBAL innodb_max_dirty_pages_pct_lwm = @save_pct_lwm;
|
