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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 /etc/mysql/my.cnf
``` ```
# InnoDB Memory # ------------------ Memory Usage ------------------
innodb_buffer_pool_size = 32G innodb_buffer_pool_size = 24G
innodb_buffer_pool_instances = 8 innodb_buffer_pool_instances = 8
innodb_log_buffer_size = 256M innodb_log_buffer_size = 512M
innodb_redo_log_capacity = 8G innodb_redo_log_capacity = 6G
# InnoDB I/O # ------------------ I/O & NVMe Tuning ------------------
innodb_io_capacity = 1000 innodb_flush_method = O_DIRECT # Avoid OS cache — best for NVMe
innodb_io_capacity_max = 4000
innodb_flush_method = O_DIRECT
innodb_use_fdatasync = ON 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 # ------------------ Temp Tables & Buffers ------------------
tmp_table_size = 128M tmp_table_size = 256M
max_heap_table_size = 128M 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 # ------------------ Concurrency / Threads ------------------
thread_cache_size = 32 thread_handling = one-thread-per-connection
join_buffer_size = 1M thread_cache_size = 64
sort_buffer_size = 2M
max_connections = 300 max_connections = 300
table_open_cache = 4000 table_open_cache = 4000
open_files_limit = 65535 open_files_limit = 65535
# Deadlock/Lock Management # ------------------ Locking/Deadlocks ------------------
innodb_lock_wait_timeout = 10 innodb_lock_wait_timeout = 10
innodb_deadlock_detect = ON 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 = 1
slow_query_log_file = /var/log/mysql/mysql-slow.log slow_query_log_file = /var/log/mysql/mysql-slow.log
long_query_time = 1 long_query_time = 1