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monitoring mysql with new relic

Operations per second

Queries per second

  • Insert Commands
  • Select Commands
  • Update Commands
  • Delete Commands

 

Slow Queries per minute, by node

decides long query time

3 seconds

Explain statement

to analyze the query.

 

 

Active Connections, by node

Max Connections, by node

Read vs Written InnoDB Bytes per second

Read InnoDB Data = > 90% mycase

Write InnoDB Data

Received vs Sent Bytes per second

 

throughput

query performance

query.questionsPerSecond: The number of queries sent by clients.

query.queriesPerSecond: The total number of queries per second (QPS)

query.maxExecutionTimeExceededPerSecond

timeout queries

mysql execution time is by default

to know last run query time

set profiling=1; and use show profiles; to get execution times.

Slow query logs

/ 2 seconds threshold

SET GLOBAL long_query_time = 3;

check more on enable & understand mysql slow query logs.

 

Disk io SSD vs nvme

db.innodb.dataReadsPerSecond: The number of reads per second.
db.innodb.dataWritesPerSecond: The number of writes per second.
db.innodb.osLogWrittenBytesPerSecond: The transaction log throughput. This value is proportional to how much the data changes over time.

temporary disk activity by adjusting sort_buffer_size and join_buffer_size, and rewriting queries.

Table locks

row-level locks to ensure data consistency

db.tablesLocksWaitedPerSecond for tables,

and db.innodb.rowLockTimeAvg and

db.innodb.rowLockWaitsPerSecond for rows.

read myisam vs innodb

 

missing index

MySQL uses indexes for filtering, sorting, and joining tables.

when index misses it scans whole tables.

db.selectFullJoinPerSecond and db.selectFullJoinRangePerSecond indicate whether your tables need additional indexes.
db.innodb.bufferPoolReadAheadRndPerSecond helps detect inefficient table-level reads.

 

 

Advanced metrics at data explorer

At the Browse data dropdown, select Events or Metrics.

mysql configuration settings

config/mysql (593)

config/mysql/have_query_cache

no: disable from 5.7 onwards

config/mysql/innodb_buffer_pool_chunk_size
variant hosts value

1 item
134217728  //134mb

mysql profiling

config/mysql/profiling =>off

 

newrelic install mysql

 

newrelic mysql metrics explorer

mysql.node.createdTmpFilesPerSecond
mysql.node.createdTmpTablesPerSecond
mysql.node.handler.deletePerSecond
mysql.node.handler.readFirstPerSecond
mysql.node.handler.readKeyPerSecond
mysql.node.handler…eadRndNextPerSecond
mysql.node.handler.readRndPerSecond

mysql.node.handler.rollbackPerSecond
mysql.node.handler.updatePerSecond
mysql.node.handler.writePerSecond
mysql.node.innodb.bufferPool.pagesData
mysql.node.innodb.…fferPool.pagesDirty
mysql.node.innodb.b…esFlushedPerSecond
mysql.node.innodb.bufferPool.pagesFree
mysql.node.innodb.…fferPool.pagesTotal
mysql.node.innodb.b…adEvictedPerSecond
mysql.node.innodb.b…readAheadPerSecond
mysql.node.innodb.b…dAheadRndPerSecond
mysql.node.innodb.b…dRequestsPerSecond
mysql.node.innodb.b…ool.readsPerSecond
mysql.node.innodb.b….waitFreePerSecond
mysql.node.innodb.b…eRequestsPerSecond
mysql.node.innodb.dataFsyncsPerSecond
mysql.node.innodb.dataPendingFsyncs
mysql.node.innodb.dataPendingReads
mysql.node.innodb.dataPendingWrites
mysql.node.innodb.d…ReadBytesPerSecond
mysql.node.innodb.dataReadsPerSecond

mysql.node.innodb.dataWritesPerSecond
mysql.node.innodb.d…ttenBytesPerSecond
mysql.node.innodb.logWaitsPerSecond
mysql.node.innodb.l…eRequestsPerSecond
mysql.node.innodb.logWritesPerSecond
mysql.node.innodb.numOpenFiles
mysql.node.innodb.osLogFsyncsPerSecond
mysql.node.innodb.osLogPendingFsyncs
mysql.node.innodb.osLogPendingWrites
mysql.node.innodb.o…ttenBytesPerSecond
mysql.node.innodb.…gesCreatedPerSecond
mysql.node.innodb.pagesReadPerSecond
mysql.node.innodb.…gesWrittenPerSecond
mysql.node.innodb.rowLockCurrentWaits
mysql.node.innodb.rowLockTimeAvg
mysql.node.innodb.…wLockWaitsPerSecond
mysql.node.innodb.rowsDeletedPerSecond
mysql.node.innodb.…wsInsertedPerSecond
mysql.node.innodb.rowsReadPerSecond
mysql.node.innodb.rowsUpdatedPerSecond

mysql.node.maxExecu…eExceededPerSecond
mysql.node.net.abortedClientsPerSecond
mysql.node.net.abo…edConnectsPerSecond
mysql.node.net.bytesReceivedPerSecond
mysql.node.net.bytesSentPerSecond
mysql.node.net.conn…nnectionsPerSecond
mysql.node.net.connectionsPerSecond
mysql.node.net.maxUsedConnections
mysql.node.net.threadsConnected
mysql.node.net.threadsRunning
mysql.node.openedTablesPerSecond
mysql.node.openFiles
mysql.node.openTables
mysql.node.qCache.utilization
mysql.node.query.commitPerSecond
mysql.node.query.deleteMultiPerSecond

mysql.node.query.deletePerSecond
mysql.node.query.insertPerSecond
mysql.node.query.insertSelectPerSecond
mysql.node.query.pr…StmtCountPerSecond
mysql.node.query.queriesPerSecond
mysql.node.query.questionsPerSecond
mysql.node.query.r…laceSelectPerSecond
mysql.node.query.rollbackPerSecond
mysql.node.query.selectPerSecond
mysql.node.query.slowQueriesPerSecond
mysql.node.query.updateMultiPerSecond
mysql.node.query.updatePerSecond
mysql.node.selectFullJoinPerSecond
mysql.node.selectF…lJoinRangePerSecond

mysql.node.selectRangeCheckPerSecond
mysql.node.selectRangePerSecond
mysql.node.sortMergePassesPerSecond
mysql.node.sortRangePerSecond
mysql.node.sortRowsPerSecond
mysql.node.sortScanPerSecond
mysql.node.tableOpenCacheHitsPerSecond
mysql.node.tableOpe…cheMissesPerSecond
mysql.node.tableOpe…OverflowsPerSecond
mysql.node.tablesLocksWaitedPerSecond
mysql.node.threadCacheMissRate
mysql.node.threadsCached
mysql.node.threadsCreatedPerSecond
newrelic.goldenmetr…nnectionsPerSecond
newrelic.goldenmetr…e.queriesPerSecond
newrelic.goldenmetr…owQueriesPerMinute

 

understanding mysql performance metrics

Reference:

https://newrelic.com/blog/how-to-relic/how-to-monitor-mysql

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