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Foglight for SQL Server (Cartridge) - 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
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
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

Tracking the Page Allocations

The Page Allocations chart displays the amount of memory allocated to database pages, free pages, and stolen pages over the selected time range (by default, last 60 minutes).

High volume of database pages requested by SQL Server can sometimes indicate that data is not properly indexed or that the query optimizer is not using the most efficient index.

Free pages values that are consistently close to zero may indicate use of inefficient queries, or shortage of SQL Server cache memory. The value of the Free Pages metric is calculated as follows: <free pages> * 8K / 1024. For details, see Free pages on page 194.

Constantly high value of stolen pages (pages that were taken from the buffer cache to satisfy other memory requests) may indicate an overall system memory shortage. For details, see Stolen pages on page 208.

Monitoring the Buffer Cache Hit Rates

The Buffer Cache Hit Rates chart displays the buffer cache hit rate over the specified time range.

The buffer cache hit rate is the rate of logical reads being satisfied from the buffer cache, saving the need to carry out physical reads.

The buffer cache contains database, free, and stolen pages, and its size is calculated as follows: <pages> * 8 K / 1024.

The buffer cache hit rate should normally exceed 90%; hit rate values that are constantly lower than 90% may result from extensive data operations, due to inefficient query planning.

Monitoring Plan Cache-related Data

The Plan Cache panel displays information about the SQL Server's plan cache, which holds execution plans for stored procedures, triggers, ad hoc SQL, and so on. This panel can be used for tracking the plan cache hit rate, and, if the rate it too low, investigate which object plans are used frequently.

The various panes of the Plan Cache panel allow carrying out the tasks described in the following sections:

Reviewing Object Types

In SQL Server 2005 and later versions, the following object types can appear in the chart:

Bound Trees — normalized trees for views, rules, computed columns, and check constraints. For details, see glossary definition of Bound trees on page 187.
Extended Stored Procedures — a SQL Server object that dynamically loads and runs a function within a dynamic-link library (DLL) in a manner similar to a stored procedure. For details, see glossary definition of Extended stored procedures on page 192.
Object Plans — query plans generated by creating a stored procedure, function, or trigger. For details, see glossary definition of Object plans on page 200.
Replication Procedure Plans — query plans of a replication system stored procedure. For details, see glossary definition of Replication procedure plans on page 205.
SQL Plans — query plans corresponding to statements prepared using sp_prepare, sp_cursorprepare, or using auto-parameterization. For details, see glossary definition of SQL Plans on page 207.
Temporary Tables and Table Variables — temporary tables are session-specific tables, that is, the tables are automatically dropped when the session is closed. Table variables, on the other hand, are created in the memory and exist there until the running of a single Transact-SQL (T-SQL) batch is completed. For details, see glossary definition of Temporary tables and table variables on page 208.
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