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2025-04-17 21:47:19 +02:00
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@@ -22,36 +22,42 @@ SHOW VARIABLES LIKE 'innodb_buffer_pool_size';
/etc/mysql/my.cnf
```
# InnoDB Memory
innodb_buffer_pool_size = 32G
# ------------------ Memory Usage ------------------
innodb_buffer_pool_size = 24G
innodb_buffer_pool_instances = 8
innodb_log_buffer_size = 256M
innodb_redo_log_capacity = 8G
innodb_log_buffer_size = 512M
innodb_redo_log_capacity = 6G
# InnoDB I/O
innodb_io_capacity = 1000
innodb_io_capacity_max = 4000
innodb_flush_method = O_DIRECT
# ------------------ I/O & NVMe Tuning ------------------
innodb_flush_method = O_DIRECT # Avoid OS cache — best for NVMe
innodb_use_fdatasync = ON
innodb_flush_log_at_trx_commit = 2
innodb_flush_log_at_trx_commit = 2 # Fast + safe enough with battery/UPS
innodb_io_capacity = 2000 # Pushes high IOPS for writes
innodb_io_capacity_max = 8000 # Maximize during bursts
# Temp Tables
tmp_table_size = 128M
max_heap_table_size = 128M
# ------------------ Temp Tables & Buffers ------------------
tmp_table_size = 256M
max_heap_table_size = 256M
join_buffer_size = 2M
sort_buffer_size = 4M
read_buffer_size = 2M
read_rnd_buffer_size = 1M
# Thread/Connection Handling
thread_cache_size = 32
join_buffer_size = 1M
sort_buffer_size = 2M
# ------------------ Concurrency / Threads ------------------
thread_handling = one-thread-per-connection
thread_cache_size = 64
max_connections = 300
table_open_cache = 4000
open_files_limit = 65535
# Deadlock/Lock Management
# ------------------ Locking/Deadlocks ------------------
innodb_lock_wait_timeout = 10
innodb_deadlock_detect = ON
# Logging (for profiling performance)
# ------------------ File & Table Management ------------------
innodb_file_per_table = 1
# ------------------ Logging / Debug ------------------
slow_query_log = 1
slow_query_log_file = /var/log/mysql/mysql-slow.log
long_query_time = 1