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Foglight for SQL Server 5.7.5.41 - 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 Counters and Collections
Monitoring Business Intelligence Services Administering Foglight for SQL Server
Configuration Settings Viewing User-defined Counters and Collections Managing Foglight for SQL Server Agent Settings Reviewing Foglight for SQL Server Alarms Generating Reports Monitoring SQL Server instances on VMware servers
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 pull 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
Reference
SQL PI Repository Cold Backup Procedure 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

Monitoring TempDB Status

The TempDB system database is a global resource that exists in any SQL Server instance and is used for various functions within it. There is one such database in every instance.

It is used to hold the following:

•
User objects — Temporary objects explicitly created by users such as global or local temporary tables, temporary stored procedures, table variables, or cursors.
•
Internal objects — Created by the SQL Server Database Engine. For example, work tables to store intermediate results for spools or sorting.
•
Version store — Row versions that are either generated by data modification transactions in a database that uses read-committed using row versioning isolation, or snapshot isolation transactions, or Row versions that are generated by data modification transactions for features, such as: online index operations, Multiple Active Result Sets (MARS), and AFTER triggers.

Given its wide range of usage and the fact that there is only one such database in any instance, it may become a bottleneck. The TempDB dashboard aim is to help analyze TempDB activity and diagnose potential problems.

Monitoring TempDB Space Usage

The upper pane of the dashboard indicates the amount of space currently allocated across all data files of the TempDB database as well as its log files.

The usage profile graph indicates how space is used within TempDB so it is possible to see which component is allocated the majority of the space: user objects, internal objects or the version store.

The usage profile tab on the lower pane of the screen, provides more information about the usage trends of TempDB. The left side indicates how space is allocated between the various consumers of TempDB both at the database level and at the file level. To find out which tables are currently allocated within TempDB use the Tables & Indexes tab.

The Right side provides more information about the version store usage.If you see the version store consume a considerable amount of space in the TempDB, check the generation rate compared to the cleanup rate. A high generation rate that is not matched by the cleanup rate may indicate data modification transactions are not committing frequently enough. The "Current Transaction Running Time" indicates the running time of the longest transaction.

To find out more about sessions that are currently allocating space in TempDB, use the Sessions tab. The TempDB Current Allocated Size metric indicate the amount of space (MB) currently allocated by the session and not yet deallocated. The TempDB Total Allocated Size metric indicates the amount of space (MB) that the session has used since it started.

More details about the session can be found by drilling down to the Session dashboard using the link on the SPID column.

Monitor TempDB Activity

The Create Objects Rate graph, on the upper pane of the dashboard, can be used to determine the trend of user objects creation rate. If this number is high or deviates from its normal behavior it may indicate misuse of temporary objects.

The Summary tab, on the lower pane, can be used to examine rate of transactions against TempDB.

Wait for IO on TempDB files, as well as contention for allocation pages, can be examined in the SQL Performance dashboard if SQL PI is installed

Reviewing the Services

The Services drilldown provides detailed information, represented by graphs and tables, of the state of the various SQL Server support services.

Reviewing the Support Service Status

The Services Status panel includes panes that allow carrying out the following tasks:

•
Monitoring the Status of the Current Services — using the Services Status table, which allows viewing the current status of each SQL Server support service, as well as the exact time when this status was last changed.
•
Tracking the Service Status History — using the Service Status History chart, which displays the status of the support services over the last hour.

Monitoring the Status of the Current Services

The Services Status table, which displays the current status of each SQL Server support service, contains several parameters, as presented in the following table.

To create a custom filter for this table, use the options accessible by clicking Advanced. For details, see Components Shared by all Foglight for SQL Server Screens .

 
 
Table 46. The Services Status table parameters.
Column
Description
State

The state of the SQL Server support service. The possible values are: Stopped, Paused, Running, Not Installed, Not Configured, and Configured.

State Changed

The time and date that the state of the service last changed.

Service

The SQL Server service name.

The support services monitored by Foglight for SQL Server are as follows:

•
SQL Server Agent
•
DTC
•
Full Text Search
•
OLAP Services
•
SQL Server Mail
•
Integration Service
•
Report Service
•
Browser Services
•
Writer Services
•
ADH Service
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