Foglight for SQL Server (Cartridge) 5.9.4.10


Column	Description
Collection Name	The collection name, as retrieved by the agent.
Display Name	The collection name, as displayed in the application’s sections to which the collection retrieves information.
Description	The name of the collection. This list is sorted in alphabetical order.
Offline Frequency	Allows defining the collection interval, in seconds, in low frequency mode (for example: 300). Low frequency mode refers to the frequency at which the agent collects data when no user is currently connected to the monitored instance.
Online Frequency	Allows defining the collection interval, in seconds, in high frequency mode (for example: 60). High frequency mode refers to the frequency at which the agent collects data when none of the currently logged-on users are in focus on a screen, which displays any of the metrics sampled by this collection.
Real-time Frequency	Allows defining the collection interval, in seconds, in real-time frequency mode (for example: 20). Fast frequency mode refers to the frequency at which the agent collects data when one or more of the currently logged-on users are in focus on a screen, which displays any of the metrics sampled by this collection.

Access Methods

Purpose

This collection provides the methods used for accessing and updating logical data within an instance.

Type


Frequency Mode	Collection Interval (In Seconds)
Real-time	20
Online	60
Offline	300

Collection Metrics


Display Name	Description
Forwarded Records	The total number of records that were retrieved by SQL Server during the specified time range. When a row in a table that does not have a clustering index is updated, and if the modified row no longer fits on the old page, SQL Server moves the row to a new page and leaves a forwarding pointer in the old page. As a result, the non-clustered indexes do not have to be modified to reflect the new row location, but will cause subsequent retrieval of this row, by means of non-clustered indexes to require an extra I/O. A high Forwarded Records rate can indicate a need for reorganizing tables (unloading/reloading) or defining clustered indexes.
Free Space Scans	The number of scans initiated to search for free space to insert a new record.
Full Scans	The number of unrestricted full scans per second (either base-table or full-index scans).
Index Searches	The number of index searches per second. These searches are used to start a range scan, reposition a range scan, revalidate a scan point, fetch a single index record, and search down the index to locate where to insert a new row.
Page Allocations	The total number of pages that were allocated to tables or indexes during the specified time range. This metric indicates how fast tables are expanding.
Page Allocations Rate	The rate per second at which pages are allocated to tables or indexes.
Page Deallocations	The total number of pages that were deallocated from tables or indexes during the specified time range. This metric indicates how fast tables are shrinking.
Page Deallocations Rate	The rate per second at which pages are deallocated from tables or indexes.
Page Splits	The number of page splits that took place within the defined time range. Page splitting occurs when an index or data page becomes full and then is split between the existing page and a newly allocated page. Excess page splitting can lead to I/O performance issues. High and increasing values may indicate that either the indexes needs to be rebuilt and / or the indexes fill factor should be increased.
Page Splits vs Page Writes	The ratio of page splits per writes. When an index or data page becomes full during an insert operation, data is split between the current page and a newly allocated page. Excessive page splitting can result in excessive disk I/O, thereby contributing to performance degradation. Higher values of this metric indicate that page splitting affects the monitored application's I/O performance. To resolve this issue, check your database file configuration, the selected index fill factor, and the rate at which your transactions are committed.
Probe Scans	The number of probe scans. A probe scan is used to directly look up rows in an index or base table.
Range Scans	The number of qualified range scans through indexes.
Skipped Ghosted Records	The total number of ghosted records that were encountered by SQL Server during scans over the specified time range. When a record is deleted from a table, SQL Server improves concurrency by not physically removing the row from index leaf levels, but marking it instead as deleted (ghosted). At some later point, a housekeeping process asynchronously removes these rows from the leaf level. Until the records are removed, SQL Server must skip the ghosted records during leaf-level scans.
Skipped Ghosted Records Rate	The rate per second at which SQL Server encounters ghosted records during scans.
Table Lock Escalations	The number of times a lock on a table has been escalated during the specified time range. Lock escalation is not necessarily a problem by itself; however, it can cause concurrency issues and lock conflicts, and can be a major contributor to blocking problems and deadlocks.

Agent Alert List

Purpose

This collection provides a list of all SQL Server Agent's alerts, including the type of event that triggered the alert (performance or alert event) and the number of occurrences for each alert.

Type

SQL Server.

Collection Sampling Intervals


Frequency Mode	Collection Interval (In Seconds)
Real-time	60
Online	300
Offline	3600

Collection Metrics


Display Name	Description
Alert Name	The name of the alert that was raised.
Alert Type	The type of alert.
Database	The name of the database where the alert was raised.
Definition	A brief description of the specified alert.
Enabled	The status of the alert.
Last Occurred	The previous time the alert was raised.
Occurrences	The number of the alert’s occurrences.

Agent Job List

Purpose

This collection provides a list of all SQL Server Agent's scheduled jobs, including their status and duration.

Type

SQL Server.

Collection Sampling Intervals


Frequency Mode	Collection Interval (In Seconds)
Real-time	60
Online	300
Offline	3600

Collection Metrics


Display Name	Description
Category	The SQL Agent job category assigned to this job.
Current Server Time	The Server time at the time the query ran.
Current Status	The current status of the job (Running or Inactive).
Current Step Number	Displays the current step number if the job is currently running.
Description	A brief description of the job.
Is Enabled	Determines whether the job can be run.
Job Name	The name of the job.
Job State	The current state of the job.
Jobs Failed Threshold	A flag indicating that a job has failed.
Jobs Retry Threshold	A flag indicating that a job retry has occurred.
Last Run Duration	Indicates how long the last run took (displayed in the d hh:mm:ss format).
Last Run Finish Time	The time the job finished.
Last Run Message	The last message associated with that step in the job.
Last Run Outcome	The result of the last run (Success or Fail).
Last Run Outcome Threshold	A flag indicating that the last run’s outcome is a job retry.
Last Run Time	The date/time on which the job last ran.
Long Running Job Threshold	A flag indicating that a long running job has occurred.
Next Run Time	The date and time of the next scheduled run.
Raise Alarm	Indicates whether the job raised an alarm the last time it ran.
Short Job Name	The short name of the job (in cases where the job name is too long to be displayed in full).

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문제에 대한 권장 솔루션

Foglight for SQL Server (Cartridge) 5.9.4.10 - User Guide

SQL Server Agent's Default Collections

Access Methods

Agent Alert List

Agent Job List