pt-summary
功能：统计系统信息Summarize system information nicely.
作用：
打印出来的信息包括：CPU、内存、硬盘、网卡等信息，还包括文件系统、磁盘调度和队列大小、LVM、RAID、网络链接信息、netstat 的统计，以及前10的负载占用信息和vmstat信息。
示例：
# pt-summary【下图为部分截图】
pt-mysql-summary
功能：
查看mysql各个统计信息。
打印出来的信息包括：版本信息、数据目录、命令的统计、用户，数据库以及复制等信息还包括各个变量（status、variables）信息和各个变量的比例信息，还有配置文件等信息。
示例：
# 将结果写入文件
# pt-mysql-summary --user=root--password=root --host='192.168.2.11' > /root/node1_summary.log
例如：
# pt-mysql-summary--user=root --password=root --host=localhost
输出的结果如下【这是我在线上的一台MariaDB主节点截取的信息，很多参数还未做优化】：
# Percona Toolkit MySQL Summary Report#######################
System time | 2016-05-0911:21:31 UTC (local TZ: CST +0800)
# Instances##################################################
Port Data Directory Nice OOM Socket
===== ========================== ==== === ======
3306 /data/mysql 0 0 /tmp/mysql.sock
# MySQL Executable###########################################
Path to executable | /usr/local/mysql/bin/mysqld
Has symbols | Yes
# Report On Port 3306########################################
User |root@localhost
Time | 2016-05-09 19:21:31(CST)
Hostname |localhost.localdomain
Version | 10.0.12-MariaDB-logSource distribution
Built On | Linux x86_64
Started | 2016-05-0703:15 (up 2+16:06:28)
Databases | 13
Datadir | /data/mysql/
Processes | 30 connected, 2running
Replication | Is not a slave, has1 slaves connected
Pidfile |/data/mysql/localhost.localdomain.pid (exists)
# Processlist################################################
Command COUNT(*) Working SUM(Time) MAX(Time)
------------------------------ -------- ------- --------- ---------
Binlog Dump 1 1 125000 125000
Query 1 1 0 0
Sleep 30 0 22500 7000
User COUNT(*)Working SUM(Time) MAX(Time)
------------------------------ -------- ------- --------- ---------
KF_Mobile 6 0 0 0
KF_Mobile_user 1 0 0 0
repluser 1 1 125000 125000
root 1 1 0 0
zabbix 20 0 0 0
Host COUNT(*) Working SUM(Time) MAX(Time)
------------------------------ -------- ------- --------- ---------
116.228.235.114 2 0 0 0
172.16.10.10 25 1 125000 125000
localhost 1 1 0 0
db COUNT(*) Working SUM(Time) MAX(Time)
------------------------------ -------- ------- --------- ---------
KF_Mobile 7 0 0 0
NULL 2 2 125000 125000
zabbix 20 0 0 0
State COUNT(*) Working SUM(Time) MAX(Time)
------------------------------ -------- ------- --------- ---------
30 0 0 0
init 1 1 0 0
Master has sent all binlog to 1 1 125000 125000
# Status Counters (Wait 10 Seconds) ########################## # 下面是很多的统计信息，可以awk做后续处理
Variable Per day Per second 10 secs
Aborted_clients 20
Aborted_connects 4500
Access_denied_errors 1
Aria_pagecache_blocks_unused 6000
Aria_pagecache_blocks_used 250
Aria_pagecache_read_requests 80000000 1000 25
Aria_pagecache_reads 40000 1
Aria_pagecache_write_requests 17500000 200 1
Binlog_commits 60000
Binlog_group_commits 60000
Binlog_snapshot_position 35000000 400 400
Binlog_bytes_written 35000000 400 400
Binlog_cache_use 50000
Binlog_stmt_cache_use 12500
Bytes_received 500000000 6000 1250
Bytes_sent 6000000000 60000 6000
Com_admin_commands 100000 1
Com_begin 30000
Com_change_db 30000
Com_commit 35000
Com_delete 15000
Com_help 1
Com_insert 50000
Com_insert_select 3
Com_kill 3
Com_lock_tables 10
Com_optimize 4000
Com_select 4000000 45 5
Com_set_option 90000 1
Com_show_collations 20
Com_show_create_db 20
Com_show_create_table 3500
Com_show_databases 6
Com_show_engine_status 1
Com_show_fields 2000
Com_show_grants 7
Com_show_processlist 50
Com_show_status 17500
Com_show_table_status 1000
Com_show_tables 500
Com_show_triggers 1000
Com_show_variables 1500
Com_unlock_tables 10
Com_update 15000
Connection_errors_peer_address 2500
Connections 45000 1
Created_tmp_disk_tables 45000 1
Created_tmp_files 2
Created_tmp_tables 100000 1 1
Empty_queries 150000 1
Feature_subquery 6000
Feature_timezone 4
Handler_commit 4000000 45 4
Handler_delete 400000 4
Handler_icp_attempts 1750000 20
Handler_icp_match 1750000 20
Handler_prepare 200000 2 1
Handler_read_first 40000
Handler_read_key 50000000 600 6
Handler_read_last 900
Handler_read_next 60000000 700 1
Handler_read_prev 300000 3
Handler_read_rnd 7000000 80 5
Handler_read_rnd_deleted 1000000 10 40
Handler_read_rnd_next 250000000 3000 300
Handler_rollback 6
Handler_tmp_update 300000 3
Handler_tmp_write 50000000 600 60
Handler_update 15000
Handler_write 450000 5 5
Innodb_available_undo_logs 50
Innodb_background_log_sync 90000 1
Innodb_buffer_pool_bytes_data 50000000 600
Innodb_buffer_pool_bytes_dirty 175000 1 -45875
Innodb_buffer_pool_pages_flushed 600000 6 9
Innodb_buffer_pool_pages_made_not_young 4500000 50
Innodb_buffer_pool_pages_made_young 3000
Innodb_buffer_pool_pages_old 1250
Innodb_buffer_pool_read_ahead 4000
Innodb_buffer_pool_read_requests 450000000 5000 175
Innodb_buffer_pool_reads 15000
Innodb_buffer_pool_write_requests 4500000 50 15
Innodb_checkpoint_age 1250 -354
Innodb_checkpoint_max_age 30000000 350
Innodb_data_fsyncs 150000 1 2
Innodb_data_read 300000000 3500
Innodb_data_reads 20000
Innodb_data_writes 700000 8 10
Innodb_data_written 20000000000 225000 300000
Innodb_dblwr_pages_written 600000 6 9
Innodb_dblwr_writes 15000
Innodb_history_list_length 225
Innodb_ibuf_free_list 1
Innodb_ibuf_merged_inserts 200
Innodb_ibuf_merges 175
Innodb_ibuf_segment_size 2
Innodb_log_write_requests 350000 3 1
Innodb_log_writes 70000
Innodb_lsn_current 15000000000 150000 700
Innodb_lsn_flushed 15000000000 150000 700
Innodb_lsn_last_checkpoint 15000000000 150000 1000
Innodb_master_thread_active_loops 60000
Innodb_master_thread_idle_loops 22500
Innodb_max_trx_id 30000000 300 4
Innodb_mem_adaptive_hash 5000000 60
Innodb_mem_dictionary 1000000 15
Innodb_mem_total 60000000 700
Innodb_mutex_os_waits 17500
Innodb_mutex_spin_rounds 700000 7 10
Innodb_mutex_spin_waits 400000 4
Innodb_os_log_fsyncs 90000 1
Innodb_os_log_written 200000000 2250 1000
Innodb_pages_created 2000
Innodb_pages_read 20000
Innodb_pages_written 600000 6 9
Innodb_purge_trx_id 30000000 300
Innodb_read_views_memory 1000
Innodb_row_lock_time 175
Innodb_row_lock_waits 45
Innodb_rows_deleted 400000 4
Innodb_rows_inserted 450000 5 5
Innodb_rows_read 300000000 3000 250
Innodb_rows_updated 12500
Innodb_s_lock_os_waits 17500
Innodb_s_lock_spin_rounds 700000 8 9
Innodb_s_lock_spin_waits 60000
Innodb_x_lock_os_waits 450
Innodb_x_lock_spin_rounds 60000
Innodb_x_lock_spin_waits 4000
Key_read_requests 800
Key_reads 700
Memory_used 60000000 700 2250
Open_table_definitions 150
Opened_files 200000 2 5
Opened_table_definitions 8000
Opened_tables 70000 1
Queries 4000000 50 9
Questions 4000000 50 9
Rows_read 300000000 3000 250
Rows_sent 40000000 450 60
Rows_tmp_read 50000000 600 70
Select_full_join 8000
Select_range 40000
Select_scan 450000 5 1
Sort_range 300000 3
Sort_rows 10000000 125 6
Sort_scan 250000 3 1
Subquery_cache_hit 100
Subquery_cache_miss 12500
Syncs 6
Table_locks_immediate 4000000 45 5
Table_locks_waited 25
Threads_created 20
Uptime 90000 1 1
# Table cache ################################################
Size | 64
Usage | 100% # 从这里我们可以看出这个参数需要优化下【set GLOBAL table_open_cache = 1024;或者停MySQL再修改】
# Key Percona Server features################################
Table & Index Stats | Disabled
Multiple I/O Threads | Enabled
Corruption Resilient | Enabled
Durable Replication | Not Supported
Import InnoDB Tables | Not Supported
Fast Server Restarts | Not Supported
Enhanced Logging | Disabled
Replica Perf Logging | Not Supported
Response Time Hist. | Not Supported
Smooth Flushing | Not Supported
HandlerSocket NoSQL | Not Supported
Fast Hash UDFs | Unknown
# Percona XtraDB Cluster#####################################
# Plugins####################################################
InnoDB compression | ACTIVE
# Query cache################################################
query_cache_type | OFF # 根据业务环境，我把查询缓存功能关闭了
Size | 0.0
Usage | 0%
HitToInsertRatio | 0%
# Schema#####################################################
Specify --databases or --all-databases todump and summarize schemas
# Noteworthy Technologies####################################
SSL | No
Explicit LOCK TABLES | Yes
Delayed Insert | No
XA Transactions | No
NDB Cluster | No
Prepared Statements | No
Prepared statement count | 0
# InnoDB#####################################################
Version | 5.6.17-65.0
Buffer Pool Size | 160.0M
Buffer Pool Fill | 90% # 缓冲池基本用光了，需要优化下。【修改my.cnf，调大innodb_buffer_pool_size=2G】
Buffer Pool Dirty | 0%
File Per Table | ON
Page Size | 16k
Log File Size | 2 * 48.0M = 96.0M
Log Buffer Size | 8M
Flush Method |
Flush Log At Commit | 1
XA Support | ON
Checksums | ON
Doublewrite | ON
R/W I/O Threads | 4 4
I/O Capacity | 200
Thread Concurrency | 0 当前并发为0
Concurrency Tickets | 5000 可用的票为5000(有点类似于工作票的意思)
Commit Concurrency | 0
Txn Isolation Level | REPEATABLE-READ
Adaptive Flushing | ON
Adaptive Checkpoint |
Checkpoint Age | 3k
InnoDB Queue | 0 queries inside InnoDB, 0 queries in queue
Oldest Transaction | 0 Seconds
History List Len | 589
589
Read Views | 0
Undo Log Entries | 0 transactions, 0 total undo, 0 max undo
Pending I/O Reads | 0 buf pool reads, 0 normal AIO, 0 ibuf AIO, 0 preads
Pending I/O Writes | 0 buf pool (0 LRU, 0 flush list, 0 page); 0 AIO, 0sync, 0 log IO (0 log, 0 chkp); 0 pwrites
Pending I/O Flushes | 0 buf pool, 0 log
Transaction States | 60xnot started
# MyISAM #####################################################
Key Cache | 16.0M
Pct Used | 20%
Unflushed | 0%
# Security###################################################
Users | 20 users, 0 anon, 0w/o pw, 0 old pw
Old Passwords | OFF
# Binary Logging#############################################
Binlogs | 7
Zero-Sized | 0
Total Size | 579.4M
binlog_format | MIXED # 日志格式为MIXED
expire_logs_days | 20
sync_binlog | 0 # 刷写binlog的频率【0表示mysql不管，由系统自己决定什么时候刷写到磁盘】
server_id | 1
binlog_do_db |
binlog_ignore_db |
# Noteworthy Variables#######################################
Auto-Inc Incr/Offset | 1/1
default_storage_engine | InnoDB
flush_time | 0
init_connect |
init_file |
sql_mode |
join_buffer_size | 128k
sort_buffer_size | 512k
read_buffer_size | 256k
read_rnd_buffer_size | 512k
bulk_insert_buffer | 0.00
max_heap_table_size | 16M
tmp_table_size | 16M
max_allowed_packet | 20M
thread_stack | 288k
log |
log_error |/data/mysql/localhost.localdomain.err
log_warnings | 1 【设定是否将警告信息记录进错误日志。默认设定为1，表示启用；可以将其设置为0以禁用；大于1的数值时表示将新发起连接时产生的“失败的连接”和“拒绝访问”类的错误信息也记录进错误日志。】
log_slow_queries |
log_queries_not_using_indexes | OFF
log_slave_updates | OFF # 表示允许备库将其重放的事件记录到自身的二进制日志中【这个参数只能配置在从节点上】
# Configuration File#########################################
Config File | /etc/my.cnf
[client]
port = 3306
socket = /tmp/mysql.sock
[mysqld]
port = 3306
socket = /tmp/mysql.sock
skip-external-locking
key_buffer_size = 16M
table_open_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M
skip_name_resolve = on
slow_query_log = on
long_query_time = 5
thread_cache_size = 300
query_cache_size = 0
query_cache_type = OFF
max_allowed_packet = 20M
max_connections = 1000
character_set_server = utf8
log-bin = mysql-bin
binlog_format = mixed
max_binlog_size = 500M
expire_logs_days = 20
server-id = 1
innodb_file_per_table = on
innodb_buffer_pool_size = 160M
innodb_log_buffer_size = 8M
innodb_flush_log_at_trx_commit = 1
[mysqldump]
quick
max_allowed_packet = 20M
[mysql]
no-auto-rehash
[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout
# The End####################################################
上面的参数很多，可以根据其结果修改参数。以达到调优的目的。