Eu tenho um servidor Plesk Ubuntu 22.04 com 120 GB de RAM e mariadb 10.6.16 que uso para executar o banco de dados de um único site. O banco de dados sozinho tem cerca de 8 GB, mas apesar de todas as otimizações que fiz, o mariadb ainda está rodando com mais de 140% da CPU. Isso resulta em tempos de resposta lentos do site.
Já fiz algumas pesquisas no Google e otimizei PHP FPM e MySQL mas apesar de tudo isso a velocidade do site ainda é lenta e estou apontando o dedo para o mariadb cujo processo está em mais de 140% do processador. Vou deixar para vocês a captura de tela abaixo.
Configuração PHP FPM
Eu configurei:
pm.max_children = 90
pm.max_requests = 200
pm = static
memory_limit = 10240M
max_execution_time = 300
max_input_time = 600
post_max_size = 1024M
upload_max_filesize = 512M
Configuração MariaDB
No /etc/mysql/my.cnfarquivo, configurei esses valores
[mysqld] sql_mode=ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
bind-address = 127.0.0.1
local-infile=0
loose-local-infile=1
innodb_buffer_pool_size = 96G
innodb_log_file_size = 12G
innodb_log_buffer_size = 64M
innodb_flush_log_at_trx_commit = 2
innodb_flush_method = O_DIRECT
query_cache_type = 1
query_cache_size = 256M
query_cache_limit = 512M
query_cache_min_res_unit = 4k
innodb_lock_wait_timeout = 6000
Também é curioso mas na imagem da memória abaixo a parte em cache (cor bege) é muito pequena. Captura de tela da memória
O servidor em si estava funcionando bem em um servidor Ubuntu 20.04 de 64 Gb sem problemas. Mas desde esta migração é lenta. Mesmo que tenhamos passado a RAM de 64 Gb para 120 Go no servidor Ubuntu 22.04.
Alguém já enfrentou esse tipo de problema?
Agradeço antecipadamente por sua ajuda.
Cumprimentos
Aqui estão informações adicionais baseadas em comentários: A CPU do servidor é 24 x Processador AMD EPYC 7282 de 16 núcleos O disco rígido é NVMe
MariaDB [(none)]> SHOW ENGINE INNODB STATUS;
| InnoDB | |
=====================================
2024-02-06 09:18:33 0x7fd0721fe640 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 55 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 0 srv_active, 0 srv_shutdown, 386065 srv_idle
srv_master_thread log flush and writes: 386059
----------
SEMAPHORES
----------
------------
TRANSACTIONS
------------
Trx id counter 5295351
Purge done for trx's n:o < 5295349 undo n:o < 0 state: running
History list length 1
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION (0x7fe8c01d0880), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01cdc80), not started
mysql tables in use 1, locked 0
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01cb080), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01c8480), not started
mysql tables in use 6, locked 0
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01c4d80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01cbb80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01c4280), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01d1380), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01cd180), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01ce780), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01cc680), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01c3780), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01c0b80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01d1e80), not started
mysql tables in use 2, locked 0
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01c9a80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01cfd80), not started
mysql tables in use 1, locked 0
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01cf280), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01ca580), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01c7980), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01c2c80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01c6e80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01c2180), not started
mysql tables in use 5, locked 0
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01c8f80), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01c6380), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01c5880), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0x7fe8c01c1680), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
FILE I/O
--------
Pending flushes (fsync) log: 0; buffer pool: 0
406980 OS file reads, 1500489 OS file writes, 309011 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 1.07 writes/s, 0.56 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 0, seg size 2, 0 merges
merged operations:
insert 0, delete mark 0, delete 0
discarded operations:
insert 0, delete mark 0, delete 0
0.00 hash searches/s, 0.00 non-hash searches/s
---
LOG
---
Log sequence number 10381178784
Log flushed up to 10381178282
Pages flushed up to 9758411800
Last checkpoint at 9758411788
0 pending log flushes, 0 pending chkp writes
1500490 log i/o's done, 1.07 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 103213432832
Dictionary memory allocated 613451784
Buffer pool size 6230016
Free buffers 5820886
Database pages 409130
Old database pages 151006
Modified db pages 21938
Percent of dirty pages(LRU & free pages): 0.352
Max dirty pages percent: 90.000
Pending reads 0
Pending writes: LRU 0, flush list 0
Pages made young 1300160, not young 5227092
0.04 youngs/s, 0.00 non-youngs/s
Pages read 406341, created 12733, written 0
0.00 reads/s, 0.02 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 0 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 409130, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 read views open inside InnoDB
Process ID=0, Main thread ID=0, state: sleeping
Number of rows inserted 774791, updated 948664, deleted 367, read 777328684815
0.85 inserts/s, 0.00 updates/s, 0.00 deletes/s, 1854176.96 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 0
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
Os demais comandos são resultados muito longos para serem inseridos na descrição com base no limite fixado pelo Stackexchange.
Outras informações:
MOSTRAR STATUS GLOBAL; https://justpaste.it/4iip0
MOSTRAR VARIÁVEIS GLOBAIS; https://justpaste.it/d9k81
STATUS; https://justpaste.it/fk95g
ulimit -a https://justpaste.it/bc50r