Foglight for SQL Server (Cartridge) 5.9.3.20


	NOTE: While the Delete (MB), Insert (MB), Select (MB), and Update (MB) metrics handle the size in megabytes, the average Select rate, displayed in the chart, can appear in Kb/Sec when the rate values are extremely low.

Type

SQL Server Services.

Collection Sampling Intervals


Frequency Mode	Collection Interval (In Seconds)
Real-time	300
Online	900
Offline	3600

Collection Metrics


Display Name	Description
Delete (MB)	The cumulative size (in megabytes) of I/O Delete operations performed on indexed and heaped tables in the selected SQL Server instance.
Insert (MB)	The cumulative size (in megabytes) of I/O Insert operations performed on indexed and heaped tables in the selected SQL Server instance.
Select (MB)	The cumulative size (in megabytes) of I/O Select operations performed on indexed and heaped tables in the selected SQL Server instance.
Update (MB)	The cumulative size (in megabytes) of I/O Update operations performed on indexed and heaped tables in the selected SQL Server instance.
Delete (Rows)	The cumulative size, in rows, of I/O Delete operations performed on indexed and heaped tables in the selected SQL Server instance.
Insert (Rows)	The cumulative size, in rows, of I/O Insert operations performed on indexed and heaped tables in the selected SQL Server instance.
Instance	The SQL Server instance name.
Select (Rows)	The cumulative size, in rows, of I/O Select operations performed on indexed and heaped tables in the selected SQL Server instance.
Update (Rows)	The cumulative size, in rows, of I/O Update operations performed on indexed and heaped tables in the selected SQL Server instance.

SQL Server Version Info

This collection provides general data about the SQL Server instance properties, such as identification of the database version number, along with the most recently installed service packs

Type

SQL Server.

Collection Sampling Intervals


Frequency Mode	Collection Interval (In Seconds)
Real-time	900
Online	900
Offline	86400

Collection Metrics


Display Name	Description
Cluster	Indicates if the instance is taking part in a cluster environment.
Collation	The SQL Server instance collation.
Log Shipping	Indicates if Log Shipping is configured.
Mirroring	Indicates if mirroring is configured.
OS Version	The NT version of the computer that runs the SQL Server instance.
Physical Memory	The amount of physical memory on the SQL Server instance host machine.
Process ID	The process ID of the SQL Server instance host machine.
Processor Count	The number of processors on the SQL Server instance’s host machine.
Processor Type	The processor type on the SQL Server instance’s host machine.
Product Version	SQL Server instance product version.
Server Name	The server name of the SQL Server instance.
SP Version	The service pack version of the SQL Server instance.
SQL Edition	The SQL Server instance edition.
SQL Version	SQL Server instance version.
WindowsVersion	The Windows version of the computer that runs the SQL Server instance.

Statistics

Purpose

This collection provides a summary of SQL Server batches and compilations.

Type

System.

Collection Sampling Intervals


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

Collection Metrics


Display Name	Description
Batch Executions	SQL Batches being submitted to SQL Server for execution.
Batch Executions Rate	The rate per second at which SQL batches are being submitted to SQL Server for execution.
Compiles	Compiling is the process by which SQL Server converts the SQL statement into an executable query plan.
Compiles Rate	The rate per second at which SQL Statements are compiled, that is: converted into an executable query plan.
ReCompiles	A recompile occurs when SQL Server determines that the execution plan for a stored procedure that is currently executing may no longer be the best possible plan.
Redundant Compilations Ratio	Percentage of SQL recompilations that take place. A high percentage of SQL recompilations may indicate the need for additional physical memory. This ratio is calculated as follows: 100 * (Compiles / Compiles + Recompiles)

Top SQLs

Purpose

This collection collects data of SQL Statements that consumed the highest amount of resources during the specified time range.

Type

SQL Server.

Collection Sampling Intervals


Frequency Mode	Collection Interval (In Seconds)
Real-time	60
Online	300
Offline	900

Collection Metrics


Display Name	Description
Creation Date	Indicates the date the SQL statement was first run, thereby allowing the creation of SQL statement statistics
Diff. From Executions	Indicates the incremental difference in the number of SQL executions since the last sample.
Diff. From Total CLR Time	Indicates the incremental difference, since the last sample, in the total CLR time spent for executing the SQL statements.
Diff. From Total CPU	Indicates the incremental difference, since the last sample, in the total CPU time consumed by the SQL executions.
Diff. From Total Elapsed Time	Indicates the incremental difference, since the last sample, in the total time consumed for carrying out the SQL statement.
Diff. From Total I/O	The incremental difference, since the last sample, in the total number of I/O operations that were carried out for executing the SQL statements.
Diff. From Total Logical Reads	The incremental difference, since the last sample, in the total number of logical reads carried out for executing the SQL statements.
Diff. From Total Physical Reads	The incremental difference, since the last sample, in the total number of physical reads carried out upon executing SQL statements.
Diff. From Total Wait Time	The incremental difference, since the last sample, in the total wait time consumed upon executing SQL statements.
Executions	Indicates the number of times the SQL script executed for a unique SQL Handle.
Last Executed	Indicates the last time the SQL statement was executed (last run).
Plan Handle	Provides a unique identification of a SQL statement execution plan.
Query Hash	Query hash value indicates the logic behind a SQL script. Similar SQL queries (that is, SQL queries that differ by literal rather than logical values) have the same query hash value. Therefore, if the execution of such queries results in different query plan hash values, the reason for the difference is most probably the data against which the queries were executed.
SQL Handle	Provides a unique identification of a SQL batch script.
SQL Hit Rate	The percentage of SQL Statements that found the required plan already in the cache. If a matching plan is found, SQL Server does not need to compile the query or the stored procedure. This can save a significant amount of CPU resources, and speed up SQL Server queries.
Statement End Offset	A SQL batch may be combined of multiple SQL statements. While the SQL handle identifies the batch as a whole, this metric provides a unique identification of a specific SQL statement, by indicating the end position of the statement within the SQL batch.
Statement Start Offset	A SQL batch may be combined of multiple SQL statements. While the SQL handle identifies the batch as a whole, this metric provides a unique identification of a specific SQL statement, by indicating the start position of the statement within the SQL batch.
Total CLR Time	The total CLR time spent for executing the SQL statements.
Total CLR Time Per Exec	The average CLR time spent for executing a single CLR execution.
Total CLR Time Rate Top SQL	The total CLR time per second spent for executing the CLR execution.
Total CPU	The total CPU time consumed by the SQL executions.
Total CPU Per Exec	The average CPU time spent for executing a single SQL statement.
Total Elapsed Time	The total time consumed for carrying out the SQL statement executions.
Total Elapsed Time Per Exec	The average time spent for executing a single SQL statement.
Total I/O	The total number of I/O operations that were carried out for executing the SQL statements.
Total I/O per Exec	The average number of I/O operations carried out for executing a single SQL statement.
Total I/O Rate Top SQL	The total number of I/O operations per second that were carried out for executing the SQL statements.
Total Logical Reads	The total number of logical reads carried out for executing the SQL statements.
Total Logical Reads Per Exec	The average number of logical reads carried out for executing a single SQL statements.
Total Logical Reads Rate Top SQL	The total number of logical reads per second that were carried out for executing the SQL statements.
Total Physical Reads	The total number of physical reads carried out for executing the SQL statements.
Total Physical Reads Per Exec	The average number of physical reads carried out per execution of a single SQL statement.
Total Wait Time	The total wait time spent while executing the SQL statements.
Total Wait Time Per Exec	The average time spent on wait events while executing a single SQL statement.

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