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Foglight for SQL Server (Cartridge) 7.3.0 - User Guide

Introduction to this Guide Using Foglight for SQL Server
Viewing the Databases Dashboard Overview Dashboard Advisories Dashboard Monitoring Data Replication Monitoring SQL Performance Reviewing Memory Usage Reviewing the Instance Activity Reviewing Database Usage Reviewing the Services Using the HADR Drilldown Using the Logs Drilldown Reviewing Configuration Settings Viewing User-defined Performance Counters and Collections
Monitoring Business Intelligence Services Administering Foglight for SQL Server
Configuration Settings Managing Foglight for SQL Server Agent Settings Reviewing Foglight for SQL Server Alarms Generating Reports Monitoring SQL Server instances on VMware servers
Reference
SQL Performance Investigator Metrics
Active Time All SQL Agents CPU Usage All SQL Agents Resident Memory Usage Availability Average Physical I/O Operations Average SQL Response Time Backup Recovery Wait Blocked Lock Requests Checkpoint Pages CLR Wait CPU Usage CPU Wait Cursor Synchronization Wait Database Replication Wait Deferred Task Worker Wait Degree of Parallelism Disk Utilization DTC CPU Usage DTC Resident Memory Usage Distributed Transaction Wait Executions Ended Executions Started External Procedures Wait Full Scans Full Text Search CPU Usage Full Text Search Resident Memory Usage Full Text Search Wait Free Buffer Wait Hosted Components Wait IO Bulk Load Wait IO Completion Wait IO Data Page Wait IO Wait Latch Buffer Wait Latch Wait Latch Savepoint Wait Lazy Writes Lock Wait Lock Bulk Update Wait Lock Exclusive Wait Lock Intent Wait Lock Requests Lock Schema Wait Lock Shared Wait Lock Update Wait Lock Wait Log Buffer Wait Log Flushes Log Other Wait Log Synchronization Wait Log Wait Log Write Wait Memory Wait Network IO Wait Network IPC Wait Network Mirror Wait Network Wait Non SQL Server CPU Usage Non SQL Resident Memory Usage OLAP CPU Usage OLAP Resident Memory Usage OLEDB Provider Full Text Wait Other CPU Usage Other Miscellaneous Wait Other Wait Overall CPU Page Life Expectancy Page Splits Parallel Coordination Wait Physical I/O Physical Memory Used Physical Page Reads Physical Page Writes Probe Scans Plan Cache Hit Rate Range Scans Rec Ended Duration Remote Provider Wait Run Queue Length Samples Service Broker Wait Session Logons Session Logoffs SQL Agent CPU Usage SQL Agent Resident Memory Usage SQL Executions SQL Mail CPU Usage SQL Mail Resident Memory Usage SQL Recompilations SQL Response Time SQL Server Background CPU Usage SQL Server Cache Memory SQL Server Connections Memory SQL Server Connections Summary SQL Server Foreground CPU Usage SQL Server Resident Memory Usage SQL Server Swap Memory Usage Synchronous Task Wait Table Lock Escalation Target Instance Memory Total CPU Usage Total Instance Memory Virtual Memory Used
Rules Collections and Metrics
SQL Server Agent's Default Collections Access Methods Agent Alert List Agent Job List Always On Availability Groups Backup Locations Blocking History Blocking List Buffer Cache List Buffer Manager CLR Assemblies Cluster Summary Configuration Database Index Density Vectors Database Index Details Database Index Fragmentation Info Database Index Histogram Database Index List Database Information Database Properties Database Sessions (Session List) Database Summary Database Tables List Databases Deadlock DTC Information Error Log Error Log List Error Log Scan File Groups File Data Flow Statistics File Groups Files Files Drive Total Files Instance Summary Full Text Catalog InMemory OLTP (XTP) Instance Wait Categories Instance Wait Events Job Messages Latches and Locks Lock Statistics Locks List Log Shipping Log Shipping Error Logical Disks Long Running Session Memory Manager Mirroring Mirroring Performance Counters Missing Indexes Plan Cache Distribution Plan Cache List Replication Agents Replication Agent Session Actions Replication Agent Session Merge Articles Replication Agent Sessions Replication Agent Sessions by Type Replication Available Replication Publications Replication Subscriptions Reporting Services Resource Pool Session Data Session Trace SQL PI Instance Statistics SQL Server Connections Summary SQL Server Global Variables SQL Server Host SQL Server Load SQL Server Services SQL Server Throughput SQL Server Version Info SSIS OS Statistics SSIS Summary Statistics Top SQLs Top SQL Batch Text Top SQL Long Text Top SQL Plan Top SQL Short Text Top SQL Summary Traced SQL PA Usability User-defined Performance Counters User-defined Queries Virtualization XTP Session Transactions Statistics
Glossary
A
Access methods Adhoc SQL Plans Alarm Alert Allow updates Anonymous subscription Authentication AutoClose AutoGrow Automatic Discovery AutoShrink B Batch BCP (Bulk Copy Program) Blocking Books Online Bound trees Buffer Buffer cache Buffer pool Bulk copy Bulkinsert Bulk load C Cache CAL Calibration Cardinality Cartridge Chart Checkpoint process Client network utility CLR Compile Connect Connection Connectivity software CPU Usage Cursors D Data access components Data file Data storage engine Database Database object DataFlow DBCC DBID DBO Deadlock Disk queue length Disk transfer time Disk utilization DiskPerf Distributing instance Distributor DMO Drilldown DTC DTS E Error log Event alert Execution contexts Extended stored procedures Extent External procedures F File Filegroup File cache Foglight Agent Manager Foglight Management Server Foreign key Forwarded records Free buffers Free list Free pages Free potential Free space Freespace scans Full text search G GAM Ghosted records Growth increment GUID H Hash buckets Hashing Heap Hit rate Hit ratio Host name Host process I I/O Index Indid Integrated security Intent Locks J Job K Kernel memory Kernel mode Kill L Latch Lazy writer Licensing Lightweight pooling Lock Lock area Lock escalation Lock mode Log Log cache Log writer Logical I/O LRU LSN M Master MaxSize MDAC Metric Misc.normalized trees Model Monitor page file N Named pipes Net library NIC Null O OBID Object plans OLAP OLAP service OLTP Optimizer Optimizer cache osql P Page life expectancy Paging Panel Parse Parser Per seat licensing Per server licensing Performance alert Physical I/O Physical read Physical write PID Pinned Plan Plan cache Potential growth Prepared SQL plans Primary key Privileged mode Procedure cache Procedure plans Process Profiler Publication database Publisher Publisher databases Publishing server Pull subscription Pulse Push subscription Q Query plan R RAID Random I/O Read ahead Recompile Referential integrity Relational data engine Replication procedure plans Role Rollback S sa Schema locks Sequential I/O Session Severity SGAM Shared locks Show advanced options SMP Sort, Hash, Index Area SPID Spike Spinner SQL Agent Mail SQL Mail SQL Plans SQL Server Agent SQL Server authentication SQL Server books online Standard deviation Stolen pages Stored procedure Support service SYSADMIN role T TDS TempDB Temporary tables and table variables Threshold Torn page detection Transaction Trigger Trigger plans Truncate Trusted U UMS Unused space User connection area User mode V Virtual log file VLF W Waitfor Windows authentication mode Working set
Technical support resources

Monitoring the Plan Cache

The Plan Cache table displays objects that are currently stored in the plan cache.

 

The plan cache contains executable plans for Transact-SQL, including objects such as stored procedures, triggers, views and defaults, as well as ad hoc and prepared SQL.

To improve performance, Foglight for SQL Server limits the number of records that can be displayed in this table to 300 rows, but by default, a maximum of 20 records are displayed.

* 
NOTE: To define global settings about data retrieval to the Plan Cache table, use the Plan Cache view in the Databases Administration dashboard. To access this view, click the In-context actions button at the upper right side of the screen and then select Agent settings. For details, see Setting Options for Displaying Data in the Plan Cache .

Foglight for SQL Server retrieves the largest plan cache entries first, so if any entries are not displayed, they are the smallest ones.

 
Table 12. The Plan Cache table contains the following columns:
Metric
Description
Database

The database where the object resides.

Owner

The object’s owner.

Object

The object name.

Type

The object type.

An object can have one of the following types:

•
Stored procedure
•
Prepared statement
•
Ad hoc query
•
Replication procedure
•
Trigger
•
View
•
Default
•
User table
•
System table
•
Check
•
Rule
Use Count

The number of times this cache object has been used since the plan was created.

Reference Count

The number of objects that reference this cache object.

Used Size

The amount of space in the plan cache, in megabytes, which is allocated to this object.

% Cache

The percentage of plan cache used by this plan.

SQL Query Text

The name of the procedure, or the first 128 bytes of the batch submitted.

Language

The language of the connection that created the cache object.

Each connection can individually set an SQL Server language to be used for the connection.

NOTE: Running identical plans that use several, incompatible language formats decreases the plan cache hit rate. To avoid language issues, ensure that all identical plans use the same language.
Date Format

The date format used by the connection that created the cache object.

NOTE: Running identical plans that use several, incompatible date formats decreases the plan cache hit rate. To avoid date issues, ensure using the same date format for all applications.

Tracking Memory Allocation to the Plan Cache by Object Type

The Cache Size by Object Type chart displays the amount of memory allocated to the plan cache over time, and breaks it down by object type. This display allows viewing trends of plan usage, which can be used for improving the queries used for retrieving the plans.

Reviewing Statistics about Plan Cache Objects

The Object Types chart shows various statistics for each type of plan cache object.

Figure 13. The Object Types chart.

The Object Types list can be used for selecting the metric to be displayed in this graph. Each metric is displayed for each type of plan cache object.

 
Table 13. The Object Types chart displays the following metrics.
Metric
Description
Hit Rate

The rate of logical reads that were satisfied from plans existing in the plan cache, divided by plan types.

Number of Objects

The number of objects of each type that are currently stored in the plan cache.

Use Rate

The rate at which each type of plan cache objects is being run (used).

Reviewing the Instance Activity

The Activity drilldown provides access to graphs that display both current and recent activity details for the currently monitored SQL Server instance.

The first section contains instructions regarding the use of the various panels of the Activity drilldown for carrying out a root-cause analysis of possible performance issues. The following sections provide in-depth data about each panel.

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