来源：
http://dev.mysql.com/doc/mysql-monitor/2.0/en/mem_graphref.html#mem_graphref_database_activity
MySQL Enterprise Monitor 2.0 :: F MySQL Enterprise Monitor Reference :: F.11 Advisor/Graph Reference :: F.11.2 Graph Definition Reference
转载请注明原文链接http://www.cnblogs.com/lenagt/archive/2012/06/06/2538182.html 谢谢。
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Graph Definition Reference
The following items describe individual graphs.
Connections //连接数
Displays the number of client connections by displaying the number of connected threads, active threads, and cached threads.
显示客户端连接数，连接的线程数、活动线程数、缓存线程数。
|
Name |
Connections |
|
Range Label |
total/min |
|
Series //级别 |
Expression //表达式 |
|
Aborted |
aborted |
|
Active |
running |
|
Current |
connected |
|
Variables //变量 |
Data Item //对应数据项 |
|
connected |
mysql:status:Threads_connected |
|
running |
mysql:status:Threads_running |
|
aborted |
mysql:status:Aborted_connects |
CPU Utilization //CPU利用率
Displays the CPU usage statistics over time for the machine hosting the MySQL server. The graph shows the aggregate system, user, wait and idle times for your CPU(s). You can use this information to help determine your CPU utilization and whether you are getting the most efficient use of your CPU power.
显示MySQL服务所在机器的CPU使用率。这个图展示了CPU的系统占用、用户、等待、空闲状态。通过参考这些信息可以使你的CPU更高效。
|
Name |
CPU Utilization |
|
Range Label |
% |
|
Series |
Expression |
|
Kernel |
sys/(sys+user+wait+idle)*100 |
|
Total |
(sys+user+wait)/(sys+user+wait+idle)*100 |
|
User |
user/(sys+user+wait+idle)*100 |
|
Wait I/O |
wait/(sys+user+wait+idle)*100 |
|
Variables |
Data Item |
|
sys |
os:cpu:cpu_sys |
|
user |
os:cpu:cpu_user |
|
wait |
os:cpu:cpu_wait |
|
idle |
os:cpu:cpu_idle |
Database Activity //数据库活动
Displays the database activity, by showing the individual counts over time of different DML statements per minute. For example, you can monitor the number of SELECT statements executed per minute over time and gain an understanding of your server throughput. This information can be used to monitor the activity level, and provide a useful quick reference for your server operation.
显示数据库的活动，通过展示每分钟不同DML的个别计数。比如，你可以监控每分钟执行SELECT语句的数量，并且了解服务器的吞吐量。这个信息可以用来监控活动级别，并对服务器的运行提供有效快速的参考。
|
Name |
Database Activity |
|
Range Label |
avg statements/sec |
|
Series |
Expression |
|
Call |
((call_proc)/60) |
|
Delete |
((deletes+delete_multi)/60) |
|
Insert |
((inserts+insert_selects)/60) |
|
Replace |
((replaces+replace_selects)/60) |
|
Select |
(selects/60) |
|
Update |
((updates+update_multi)/60) |
|
Variables |
Data Item |
|
selects |
mysql:status:Com_select |
|
inserts |
mysql:status:Com_insert |
|
insert_selects |
mysql:status:Com_insert_select |
|
updates |
mysql:status:Com_update |
|
update_multi |
mysql:status:Com_update_multi |
|
replaces |
mysql:status:Com_replace |
|
replace_selects |
mysql:status:Com_replace_select |
|
deletes |
mysql:status:Com_delete |
|
delete_multi |
mysql:status:Com_delete_multi |
|
call_proc |
mysql:status:Com_call_procedure |
Hit Ratios //命中率
Shows the cache hit ratios (as a percentage) for the query cache, MyISAM and InnoDB tables, and the connection and thread cache information. The information provided by the hit ratios can provide indicators of whether your cache is working effectively, or is of a size suitable for the data that you are storing and retrieving. Low hit ratios indicate that your cache are inefficient and may need to be investigated.
显示查询缓存、MyISAM和InnoDB表、连接和线程缓存信息的缓存命中率（百分比）。命中率提供的信息可以指出缓存是否有效的工作，或是否适合存储和检索的大小。低命中率表示你的缓存效率低下可能需要作出调整。
|
Name |
Hit Ratios |
|
Range Label |
% |
|
Series |
Expression |
|
InnoDB Buffer |
100-((iReads / iReadRequests)*100) |
|
Key Cache |
(100-((keyReads / keyReadRequests)*100)) * (keyReadRequests >= keyReads) |
|
Query Cache |
(qHits/(qHits+qInserts))*100 |
|
Thread Cache |
100-((tcreated / connections)*100) |
|
Variables |
Data Item |
|
qHits |
mysql:status:Qcache_hits |
|
qInserts |
mysql:status:Qcache_inserts |
|
keyReads |
mysql:status:Key_reads |
|
keyReadRequests |
mysql:status:Key_read_requests |
|
iReads |
mysql:status:Innodb_buffer_pool_reads |
|
iReadRequests |
mysql:status:Innodb_buffer_pool_read_requests |
|
tcreated |
mysql:status:Threads_created |
|
connections |
mysql:status:Connections |
InnoDB Buffer Pool //InnoDB缓冲池
Displays the size and page usage of the InnoDB buffer pool, providing information on the cache usage and performance. The graph shows the buffer pool size, active pages, and the number of modified pages.
显示InnoDB缓冲池大小和页面使用情况，为缓存的使用情况和性能提供信息。这个图展示了缓冲池大小、活动页面和被修改页面数量。
|
Name |
InnoDB Buffer Pool |
|
Range Label |
MB |
|
Series |
Expression |
|
Modified |
(modified*16384)/(1024*1024) |
|
Total Size |
(size*16384)/(1024*1024) |
|
Used |
(used*16384)/(1024*1024) |
|
Variables |
Data Item |
|
size |
mysql:innodbstatus:innodb_bp_size |
|
used |
mysql:innodbstatus:innodb_bp_db_pages |
|
modified |
mysql:innodbstatus:innodb_bp_modified_pages |
InnoDB OS File Access //InnoDB文件系统访问
Displays the InnoDB I/O counts showing the number of fsync, read, and write operations used to support InnoDB tables.
显示InnoDB的I/O操作统计。包括InnoDB表的fsync、读、写操作。
|
Name |
InnoDB OS File Access |
|
Range Label |
avg operations/sec |
|
Series |
Expression |
|
File fsync() |
(fsync/60) |
|
File Reads |
(read/60) |
|
File Writes |
(write/60) |
|
Variables |
Data Item |
|
read |
mysql:innodbstatus:innodb_io_os_file_reads |
|
write |
mysql:innodbstatus:innodb_io_os_file_writes |
|
fsync |
mysql:innodbstatus:innodb_io_os_file_fsyncs |
InnoDB Row Details //InnoDB行详细信息
Shows the row counts per minute for individual SQL operations (READ, INSERT, UPDATE and DELETE).
按类别显示每分钟SQL操作的总数。
|
Name |
InnoDB Row Details |
|
Range Label |
avg rows/sec |
|
Series |
Expression |
|
Rows Deleted |
(deleted/60) |
|
Rows Inserted |
(inserted/60) |
|
Rows Read |
(read/60) |
|
Rows Updated |
(udpated/60) |
|
Variables |
Data Item |
|
read |
mysql:innodbstatus:innodb_rows_read |
|
inserted |
mysql:innodbstatus:innodb_rows_inserted |
|
updated |
mysql:innodbstatus:innodb_rows_updated |
|
deleted |
mysql:innodbstatus:innodb_rows_deleted |
InnoDB Semaphores //InnoDB 信号状态
Displays the InnoDB semaphore status. The graph indicates the amount of time that different InnoDB threads have spent waiting due to the locks used to prevent the same structures being updated at the same time. A large number of threads waiting for the semaphores may be a result of disk I/O or connection problems inside InnoDB. You may want to modify your InnoDB thread concurrency.
显示InnoDB信号状态。该图显示不同的InnoDB线程用于防止同时更新相同的结构而花在等待锁的时间。大量的线程在等待信号可能是由磁盘I/O或InnoDB内部连接问题导致。你可能需要调整InnoDB线程并发量。
|
Name |
InnoDB Semaphores |
|
Range Label |
avg waits/sec |
|
Series |
Expression |
|
OS Waits |
(oswaits/60) |
|
Spin Rounds |
(srounds/60) |
|
Spin Waits |
(swaits/60) |
|
Variables |
Data Item |
|
swaits |
mysql:innodbstatus:innodb_sem_mutex_spin_waits |
|
srounds |
mysql:innodbstatus:innodb_sem_mutex_rounds |
|
oswaits |
mysql:innodbstatus:innodb_sem_mutex_os_waits |
KBytes In/Out //客户端I/O
Displays the total Kilobytes per minute of bytes transferred to/from the server by client applications. Spikes in this output may indicate an unusual application operation or connection.
显示每分钟服务器与客户端应用程序间传输的字节总数（I/O）。这个输出的峰值可能表明一个异常的应用程序或连接。
|
Name |
KBytes In/Out |
|
Range Label |
avg kbytes/sec |
|
Series |
Expression |
|
Received |
((bytesIn/1024)/60) |
|
Sent |
((bytesOut/1024)/60) |
|
Total |
(((bytesIn+bytesOut)/1024)/60) |
|
Variables |
Data Item |
|
bytesIn |
mysql:status:Bytes_received |
|
bytesOut |
mysql:status:Bytes_sent |
Load Average //平均负载
The load average of the server hosting the MySQL server. The load average shows the number of processes using or waiting for CPU time in the last 1, 5 and 15 minutes. Load averages showing a load higher than the number of CPU cores may indicate an overloaded server.
MySQL服务器的平均负载。负载显示线程在1、5、15分钟内使用或等待CPU 时钟。图形显示高于CPU核心数量的负载可能表示一个重负载的服务器。
|
Name |
Load Average |
|
Range Label |
Load Average |
|
Series |
Expression |
|
1 |
zero |
|
15 |
two |
|
5 |
one |
|
Variables |
Data Item |
|
one |
os:loadavg:1 |
|
two |
os:loadavg:2 |
|
zero |
os:loadavg:0 |
Memory Usage – Agent //内存使用 – 代理
Displays the current amount of memory used by the agent, and by the Lua component of the agent.
显示代理使用的当前内存容量，从代理的Lua组件。
|
Name |
Memory Usage - Agent |
|
Range Label |
MB |
|
Series |
Expression |
|
Agent |
agent_mem_size / 1024 / 1024 |
|
Lua |
lua_mem_size / 1024 / 1024 |
|
Variables |
Data Item |
|
lua_mem_size |
agent:lua:mem_size |
|
agent_mem_size |
agent:proc:mem_resident |
Memory Usage - OS Resident //内存使用 – 系统驻留
Displays the RAM usage on the server for the monitored MySQL instance. You should compare the total and used RAM values to ensure that you are not exceeding your available RAM, which will lead to swapping and performance issues.
显示被监控的MySQL服务器内存使用情况。你应该比较总量和使用的内存来确保不超过可用的内存，这将导致交换和性能问题。
|
Name |
Memory Usage - OS Resident |
|
Range Label |
MB |
|
Series |
Expression |
|
Total |
ram_total/(1024*1024) |
|
Used |
(ram_total-ram_unused)/(1024*1024) |
|
Variables |
Data Item |
|
ram_total |
os:mem:ram_total |
|
ram_unused |
os:mem:ram_unused |
Memory Usage - OS Virtual //内存使用 – 系统虚拟
Displays the use of swap space on the server for the monitored MySQL instance. High swap usage may indicate that your server needs more RAM or that your MySQL configuration needs to be modified, as high levels of swap will have a negative impact on performance.
显示服务器上使用的交换空间大小。高的交换空间使用率可能表明服务器需要更多的内存或需要更改MySQL配置，高级别的交换空间使用度将对性能产生负面影响。
|
Name |
Memory Usage - OS Virtual |
|
Range Label |
MB |
|
Series |
Expression |
|
Total |
swap_total/(1024*1024) |
|
Used |
(swap_total-swap_unused)/(1024*1024) |
|
Variables |
Data Item |
|
swap_total |
os:mem:swap_total |
|
swap_unused |
os:mem:swap_unused |
Opened Tables //打开表
The number of tables in the open state per minute.
开启状态下每分钟打开的表数。
|
Name |
Opened Tables |
|
Range Label |
total/min |
|
Series |
Expression |
|
Opened Tables |
openedTables |
|
Variables |
Data Item |
|
openedTables |
mysql:status:Opened_tables |
Query Cache Blocks //查询缓存块
The block usage of the query cache. Low usage may indicate that you are not getting the best performance out of your query cache. High numbers may indicate that you need to increase your query cache size to allow more queries to be cached.
使用的查询缓存块数。低使用率可能表明你没有使查询缓存获得最佳性能。高使用率表明你需要更多的查询缓存空间来允许更多的查询被缓存。
|
Name |
Query Cache Blocks |
|
Range Label |
num blocks |
|
Series |
Expression |
|
Free |
free_blocks |
|
Size |
size_blocks |
|
Variables |
Data Item |
|
size_blocks |
mysql:status:Qcache_total_blocks |
|
free_blocks |
mysql:status:Qcache_free_blocks |
Query Cache Efficiency //查询缓存效率
Displays the hits, inserts and queries not cacheable in the query cache. Low cache hits may indicate that your queries are being expired from the cache before they can be used, which may mean they are unsuitable for storing in the query cache.
显示查询缓存的命中、加入的数量和非查询缓存数。低缓存命中率可能表明查询在被使用之前正在从缓存过期，这可能意味着他们不适合被缓存。
|
Name |
Query Cache Efficiency |
|
Range Label |
avg cache ops/sec |
|
Series |
Expression |
|
Hits |
(hits/60) |
|
Inserts |
(inserts/60) |
|
Not Cached |
(not_cached/60) |
|
Variables |
Data Item |
|
hits |
mysql:status:Qcache_hits |
|
inserts |
mysql:status:Qcache_inserts |
|
not_cached |
mysql:status:Qcache_not_cached |
Query Cache Lowmem Prunes //由于内存较少从缓存删除的查询数量
Displays the number of queries removed from the cache because the size of the query cache was not large enough to store the queries that can be cached. Try increasing your query cache size.
显示从缓存删除的查询，因为查询缓存大小不足导致。尝试增加查询缓存的大小。
|
Name |
Query Cache Lowmem Prunes |
|
Range Label |
avg cache ops/sec |
|
Series |
Expression |
|
Lowmem Prunes |
(deletes/60) |
|
Variables |
Data Item |
|
deletes |
mysql:status:Qcache_lowmem_prunes |
Query Cache Memory //查询缓存
Displays the free space and total size of the query cache.
显示查询缓存的自由空间和总量。
|
Name |
Query Cache Memory |
|
Range Label |
MB |
|
Series |
Expression |
|
Free MB |
free/(1024*1024) |
|
Size MB |
size/(1024*1024) |
|
Variables |
Data Item |
|
size |
mysql:variables:query_cache_size |
|
free |
mysql:status:Qcache_free_memory |
Query Cache Queries //登记到缓存内的查询的数量
Shows the number of queries stored in the query cache. In normal operation this should be a relatively constant figure. A large number of switches between high and low numbers may indicate that differently sized queries are being inserted into the query cache, and then later removed as a high number of smaller queries are added to the cache. Try increasing the size of your query cache.
显示登记到缓存内的查询的数量。正常运行的时候这应该是一个相对恒定的数字。大量的数值波动可能表明不同大小的查询被查询缓存插入后删除，作为大量的小查询添加进缓存。尝试增加您的查询缓存大小。
|
Name |
Query Cache Queries |
|
Range Label |
num queries |
|
Series |
Expression |
|
Queries in Cache |
queries |
|
Variables |
Data Item |
|
queries |
mysql:status:Qcache_queries_in_cache |
Replication Delay //复制延迟
Displays the number of seconds behind the master for a given slave in a replication scenario. An increasing value means that your slave is unable to keep up with your master.
显示复制场景中Slave与Master之间相差的秒数。增加值说明Slave无法跟上Master。
|
Name |
Replication Delay |
|
Range Label |
total seconds |
|
Series |
Expression |
|
Seconds Behind Master |
sbehind |
|
Variables |
Data Item |
|
sbehind |
mysql:slavestatus:Seconds_Behind_Master |
Row Accesses //行访问统计汇总
Displays the aggregated row access statistics per minute. Information is shown both in terms of the full table scans (which are expensive to perform), and index based accesses.
显示每分钟行访问统计汇总。资料展示无论是在全表扫描(执行代价很高)还是基于索引的访问。
|
Name |
Row Accesses |
|
Range Label |
avg rows/sec |
|
Series |
Expression |
|
Average Rows Per Query |
((first+key+next+prev+hread_rnd+hread_rnd_next+sort_rows) / questions) |
|
Rows Read via Full Scan |
((hread_rnd+hread_rnd_next)/60) |
|
Rows Read via Indexes |
((first+key+next+prev)/60) |
|
Variables |
Data Item |
|
first |
mysql:status:Handler_read_first |
|
key |
mysql:status:Handler_read_key |
|
next |
mysql:status:Handler_read_next |
|
prev |
mysql:status:Handler_read_prev |
|
hread_rnd |
mysql:status:Handler_read_rnd |
|
hread_rnd_next |
mysql:status:Handler_read_rnd_next |
|
sort_rows |
mysql:status:Sort_rows |
|
questions |
mysql:status:Questions |
Row Writes //行写统计
Shows the number of delete, write (INSERT), and update operations on rows per minute on all tables regardless of storage engine.
显示所有表上删除、插入、更新操作的行数，不考虑存储引擎。
|
Name |
Row Writes |
|
Range Label |
avg rows/sec |
|
Series |
Expression |
|
Rows Deleted |
(delete/60) |
|
Rows Inserted |
(write/60) |
|
Rows Updated |
(update/60) |
|
Variables |
Data Item |
|
delete |
mysql:status:Handler_delete |
|
update |
mysql:status:Handler_update |
|
write |
mysql:status:Handler_write |
Sort Activity //排序活动
Shows the number of different sort operations performed on queries.
显示不同排序上查询执行的操作数。
|
Name |
Sort Activity |
|
Range Label |
total/min |
|
Series |
Expression |
|
Merge Passes |
Sort_merge_passes |
|
Range |
Sort_range |
|
Scan |
Sort_scan |
|
Variables |
Data Item |
|
Sort_merge_passes |
mysql:status:Sort_merge_passes |
|
Sort_range |
mysql:status:Sort_range |
|
Sort_scan |
mysql:status:Sort_scan |
Table Locks //表锁
Shows the average number of table locks per second.
显示每秒表锁的平均数。
|
Name |
Table Locks |
|
Range Label |
avg locks/sec |
|
Series |
Expression |
|
Immediate |
(locks_immediate/60) |
|
Waited |
(locks_waited/60) |
|
Variables |
Data Item |
|
locks_waited |
mysql:status:Table_locks_waited |
|
locks_immediate |
mysql:status:Table_locks_immediate |
Temporary Tables //临时表
Displays the number of memory temporary tables and disk temporary tables. Disk temporary tables are slower to create, populate, and read back. You may want to increase your memory temporary table size or check your queries to determine whether the use of temporary tables can be minimized.
显示内存中和硬盘中临时表的数量。磁盘上临时表的创建、填充和回读速度较慢。你可以增加内存临时表空间的大小或检查您的查询，来确定是否可以尽量减少使用临时表。
|
Name |
Temporary Tables |
|
Range Label |
total/min |
|
Series |
Expression |
|
Disk Temp Tables |
diskTempTables |
|
Memory Temp Tables |
memoryTempTables |
|
Variables |
Data Item |
|
memoryTempTables |
mysql:status:Created_tmp_tables |
|
diskTempTables |
mysql:status:Created_tmp_disk_tables |
Thread Cache //线程缓存
Displays the thread cache information, comparing new thread creations against all database connections.
显示线程缓存信息，对所有数据库连接中比较新线程的创建。
|
Name |
Thread Cache |
|
Range Label |
total/min |
|
Series |
Expression |
|
New Connections |
connections |
|
Threads Created |
tcreated |
|
Variables |
Data Item |
|
tcreated |
mysql:status:Threads_created |
|
connections |
mysql:status:Connections |