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mssql collector

The collector reads the SQL Server performance objects (Access Methods, Buffer Manager, Databases, Locks, Wait Statistics and others) with pdh.CounterTypeRaw, one PDH collector per SQL Server instance. It needs a SQL Server Database Engine. CI provisions SQL Server Express (instance CISQL, database CIWindowsExporter) and lists mssql in WINDOWS_EXPORTER_TEST_COLLECTORS, so live tests must fail there instead of skipping. Express has no availability groups. These notes were recorded on Windows Server 2025 (build 26100) with SQL Server 2022 Developer Edition (PatchLevel 16.0.1000.6), named instance NONDEFAULT.

  • Instance discovery: each value name under HKLM\Software\Microsoft\Microsoft SQL Server\Instance Names\SQL is an instance; its data (here MSSQL16.NONDEFAULT) names the Setup key with PatchLevel and Edition. The mssql_instance label is the part after the first dot (NONDEFAULT).
  • Object names: the value name MSSQLSERVER (default instance) gives SQLServer:<object>; every other instance gives MSSQL$<name>:<object>, for example MSSQL$NONDEFAULT:Buffer Manager. The tables below write MSSQL$<instance>.
  • The Windows Internal Database on this host publishes MSSQL$MICROSOFT##WID:<object> objects, but it is not listed under Instance Names\SQL, so the collector does not read it.
  • pdh drops _Total because the collector does not request it. On a host without Always On availability groups, Availability Replica and Database Replica have only _Total, so they emit no series.
  • Active parallel redo threads is read through a second Databases collector that exists only for SQL Server 2019 (major version 15) and later.
  • Instance labels: Databases instances are database names, including mssqlsystemresource, model_msdb and model_replicatedmaster. Locks instances are lock resource types (Key, RID, Page, Object, ...), 15 including _Total. SQL Errors instances are error classes (User Errors, Info Errors, Kill Connection Errors, DB Offline Errors); _Total equalled their sum (38 = 34 + 4).
  • No row type declares Occurrence (see internal/pdh), because no object repeats an instance name in one sample: database names are unique per instance, a database belongs to at most one availability group (Database Replica), Availability Replica instances are replicas of the instance's availability groups, and the other instances are fixed lock types, error classes, wait statistics or the single unnamed instance. A sample on this host had no duplicates in any of these objects. If pdh ever logs dropped duplicates for an MSSQL$ object, declare the field.
  • Wait Statistics is unusual: every counter is a wait class and every instance is a statistic, Average wait time (ms), Cumulative wait time (ms) per second, Waits in progress and Waits started per second. All counters are PERF_COUNTER_LARGE_RAWCOUNT, so the meaning comes from the instance name. SQL Server recomputes every item about every 5 seconds over its last interval. Under lock contention, Waits started per second showed 5 and then 0 while sys.dm_os_wait_stats kept growing, so all items are gauges.
  • Buffer cache hit ratio (PERF_RAW_FRACTION) is windowed as well: value and base are the page lookups of the last refresh, so it is a gauge. Worktables From Cache Ratio has a growing base and is a running total.
  • TestMetricTypesMatchCounterTypes compares the published types with pdh.Collector.MetricType against a live instance; deliberate exceptions (Log Growths, Log Shrinks, Log Truncations) are listed there.
  • Every .../sec counter, and several counters without /sec (for example Mars Deadlocks, the SOAP ... and Lob...Count counters, Log Flush Wait Time, Group Commit Time, Transaction Delay, Database Flow Control Delay), is PERF_COUNTER_BULK_COUNT: a cumulative count since the instance started.
  • PERF_COUNTER_LARGE_RAWCOUNT counters that are cumulative by their help text: Log Truncations, Log Growths and Log Shrinks ("Total number of ..."). Sizes, queues and "active"/"current" counts (Active Transactions, Processes blocked, Snapshot Transactions, Version Store unit count, ...) are gauges. The help text of Version Store unit creation and unit truncation does not say which; both were 2 and 0.
  • Units from the help text:
    • KB: every (KB) counter, Bulk Copy Throughput/sec, Version Generation/Cleanup rate (KB/s), and in Database Replica the Recovery Queue, Log Send Queue, Total Log requiring undo, Log remaining for undo and Redo Bytes Remaining counters.
    • Bytes: Log Bytes Flushed/sec, Log Pool Total Active Log Size, Log Pool Total Shared Pool Size, Log Bytes Compressed/sec and Log Bytes Decompressed/sec.
    • Milliseconds: Log Flush Wait Time, Log Flush Write Time (ms), Lock Wait Time (ms), Average Wait Time (ms), Transaction Delay, Flow Control Time (ms/sec).
    • Microseconds: Readahead time/sec, Group Commit Time/sec (Databases), Group Commit Time and Database Flow Control Delay (Database Replica), XTP Controller DLC Latency/Fetch and XTP Controller DLC Peak Latency.
    • Seconds: Page life expectancy, Extension page unreferenced time, Longest Transaction Running Time.
    • Pages (8 KB): Database pages, Target pages, Extension ... pages.
    • Integral Controller Slope and External benefit of memory are scaled by 10 billion.
  • Fractions and averages: the base is a separate counter in PDH (Buffer cache hit ratio base, Worktables From Cache Base, Log Cache Hit Ratio Base, Average Wait Time Base, Update conflict ratio base, XTP Controller DLC Latency Base) and pdh.CounterTypeRaw returns it as ,secondvalue.
    • Locks Average Wait Time (ms) is PERF_AVERAGE_BULK: the raw value is cumulative lock wait milliseconds and equalled Lock Wait Time (ms) (499); the base is the cumulative number of waits (3).
    • Buffer cache hit ratio (PERF_LARGE_RAW_FRACTION) had equal value and base, and both grew from 56 to 175 within 10 seconds while Page lookups/sec grew by 247. They are not the lookup counter and not a fixed sample.
  • The dump below and the 10 second check above were taken at different times. The counters had reset in between (Page lookups/sec fell from 92847 to 11432), so raw values differ.

Counter reference

Recorded on Windows Server 2025 (build 26100). Raw and Base are the first and second values that pdh.CounterTypeRaw returns for the sample instance.

MSSQL$<instance>:Access Methods

Single-instance.

Counters the collector reads:

Counter Type Raw Base
AU cleanup batches/sec PERF_COUNTER_BULK_COUNT 0
AU cleanups/sec PERF_COUNTER_BULK_COUNT 0
By-reference Lob Create Count PERF_COUNTER_BULK_COUNT 0
By-reference Lob Use Count PERF_COUNTER_BULK_COUNT 0
Count Lob Readahead PERF_COUNTER_BULK_COUNT 0
Count Pull In Row PERF_COUNTER_BULK_COUNT 0
Count Push Off Row PERF_COUNTER_BULK_COUNT 0
Deferred dropped AUs PERF_COUNTER_LARGE_RAWCOUNT 0
Deferred Dropped rowsets PERF_COUNTER_LARGE_RAWCOUNT 0
Dropped rowset cleanups/sec PERF_COUNTER_BULK_COUNT 0
Dropped rowsets skipped/sec PERF_COUNTER_BULK_COUNT 0
Extent Deallocations/sec PERF_COUNTER_BULK_COUNT 2
Extents Allocated/sec PERF_COUNTER_BULK_COUNT 8
Failed AU cleanup batches/sec PERF_COUNTER_BULK_COUNT 0
Failed leaf page cookie PERF_COUNTER_BULK_COUNT 0
Failed tree page cookie PERF_COUNTER_BULK_COUNT 0
Forwarded Records/sec PERF_COUNTER_BULK_COUNT 0
FreeSpace Page Fetches/sec PERF_COUNTER_BULK_COUNT 7
FreeSpace Scans/sec PERF_COUNTER_BULK_COUNT 7
Full Scans/sec PERF_COUNTER_BULK_COUNT 254
Index Searches/sec PERF_COUNTER_BULK_COUNT 44003
InSysXact waits/sec PERF_COUNTER_BULK_COUNT 0
LobHandle Create Count PERF_COUNTER_BULK_COUNT 0
LobHandle Destroy Count PERF_COUNTER_BULK_COUNT 0
LobSS Provider Create Count PERF_COUNTER_BULK_COUNT 0
LobSS Provider Destroy Count PERF_COUNTER_BULK_COUNT 0
LobSS Provider Truncation Count PERF_COUNTER_BULK_COUNT 0
Mixed page allocations/sec PERF_COUNTER_BULK_COUNT 6
Page compression attempts/sec PERF_COUNTER_BULK_COUNT 0
Page Deallocations/sec PERF_COUNTER_BULK_COUNT 4
Page Splits/sec PERF_COUNTER_BULK_COUNT 9
Pages Allocated/sec PERF_COUNTER_BULK_COUNT 14
Pages compressed/sec PERF_COUNTER_BULK_COUNT 0
Probe Scans/sec PERF_COUNTER_BULK_COUNT 15454
Range Scans/sec PERF_COUNTER_BULK_COUNT 27655
Scan Point Revalidations/sec PERF_COUNTER_BULK_COUNT 3
Skipped Ghosted Records/sec PERF_COUNTER_BULK_COUNT 7
Table Lock Escalations/sec PERF_COUNTER_BULK_COUNT 0
Used leaf page cookie PERF_COUNTER_BULK_COUNT 0
Used tree page cookie PERF_COUNTER_BULK_COUNT 0
Workfiles Created/sec PERF_COUNTER_BULK_COUNT 32
Worktables Created/sec PERF_COUNTER_BULK_COUNT 21
Worktables From Cache Ratio PERF_LARGE_RAW_FRACTION 0 0

MSSQL$<instance>:Availability Replica

Multi-instance. Instances: _Total. Sample instance: _Total.

Counters the collector reads:

Counter Type Raw Base
Bytes Received from Replica/sec PERF_COUNTER_BULK_COUNT 0
Bytes Sent to Replica/sec PERF_COUNTER_BULK_COUNT 0
Bytes Sent to Transport/sec PERF_COUNTER_BULK_COUNT 0
Flow Control Time (ms/sec) PERF_COUNTER_BULK_COUNT 0
Flow Control/sec PERF_COUNTER_BULK_COUNT 0
Receives from Replica/sec PERF_COUNTER_BULK_COUNT 0
Resent Messages/sec PERF_COUNTER_BULK_COUNT 0
Sends to Replica/sec PERF_COUNTER_BULK_COUNT 0
Sends to Transport/sec PERF_COUNTER_BULK_COUNT 0

MSSQL$<instance>:Buffer Manager

Single-instance.

Counters the collector reads:

Counter Type Raw Base
Background writer pages/sec PERF_COUNTER_BULK_COUNT 0
Buffer cache hit ratio PERF_LARGE_RAW_FRACTION 56 56
Checkpoint pages/sec PERF_COUNTER_BULK_COUNT 3
Database pages PERF_COUNTER_LARGE_RAWCOUNT 2838
Extension allocated pages PERF_COUNTER_LARGE_RAWCOUNT 0
Extension free pages PERF_COUNTER_LARGE_RAWCOUNT 0
Extension in use as percentage PERF_COUNTER_LARGE_RAWCOUNT 0
Extension outstanding IO counter PERF_COUNTER_LARGE_RAWCOUNT 0
Extension page evictions/sec PERF_COUNTER_BULK_COUNT 0
Extension page reads/sec PERF_COUNTER_BULK_COUNT 0
Extension page unreferenced time PERF_COUNTER_LARGE_RAWCOUNT 0
Extension page writes/sec PERF_COUNTER_BULK_COUNT 0
Free list stalls/sec PERF_COUNTER_BULK_COUNT 0
Integral Controller Slope PERF_COUNTER_LARGE_RAWCOUNT 10
Lazy writes/sec PERF_COUNTER_BULK_COUNT 0
Page life expectancy PERF_COUNTER_LARGE_RAWCOUNT 3273
Page lookups/sec PERF_COUNTER_BULK_COUNT 92847
Page reads/sec PERF_COUNTER_BULK_COUNT 2840
Page writes/sec PERF_COUNTER_BULK_COUNT 15
Readahead pages/sec PERF_COUNTER_BULK_COUNT 128
Readahead time/sec PERF_COUNTER_BULK_COUNT 872
Target pages PERF_COUNTER_LARGE_RAWCOUNT 32751616

Not read by the collector:

  • PERF_LARGE_RAW_FRACTION: RBPEX cache hit ratio

MSSQL$<instance>:Database Replica

Multi-instance. Instances: _Total. Sample instance: _Total.

Counters the collector reads:

Counter Type Raw Base
Database Flow Control Delay PERF_COUNTER_BULK_COUNT 0
Database Flow Controls/sec PERF_COUNTER_BULK_COUNT 0
File Bytes Received/sec PERF_COUNTER_BULK_COUNT 0
Group Commit Time PERF_COUNTER_BULK_COUNT 0
Group Commits/Sec PERF_COUNTER_BULK_COUNT 0
Log Apply Pending Queue PERF_COUNTER_LARGE_RAWCOUNT 0
Log Apply Ready Queue PERF_COUNTER_LARGE_RAWCOUNT 0
Log Bytes Compressed/sec PERF_COUNTER_BULK_COUNT 0
Log Bytes Decompressed/sec PERF_COUNTER_BULK_COUNT 0
Log Bytes Received/sec PERF_COUNTER_BULK_COUNT 0
Log Compression Cache hits/sec PERF_COUNTER_BULK_COUNT 0
Log Compression Cache misses/sec PERF_COUNTER_BULK_COUNT 0
Log Compressions/sec PERF_COUNTER_BULK_COUNT 0
Log Decompressions/sec PERF_COUNTER_BULK_COUNT 0
Log remaining for undo PERF_COUNTER_LARGE_RAWCOUNT 0
Log Send Queue PERF_COUNTER_LARGE_RAWCOUNT 0
Mirrored Write Transactions/sec PERF_COUNTER_BULK_COUNT 0
Recovery Queue PERF_COUNTER_LARGE_RAWCOUNT 0
Redo blocked/sec PERF_COUNTER_BULK_COUNT 0
Redo Bytes Remaining PERF_COUNTER_LARGE_RAWCOUNT 0
Redone Bytes/sec PERF_COUNTER_BULK_COUNT 0
Redones/sec PERF_COUNTER_BULK_COUNT 0
Total Log requiring undo PERF_COUNTER_LARGE_RAWCOUNT 0
Transaction Delay PERF_COUNTER_BULK_COUNT 0

MSSQL$<instance>:Databases

Multi-instance. Instances: _Total, master, model, model_msdb, model_replicatedmaster, msdb, mssqlsystemresource, tempdb. Sample instance: master.

Counters the collector reads:

Counter Type Raw Base
Active parallel redo threads PERF_COUNTER_LARGE_RAWCOUNT 0
Active Transactions PERF_COUNTER_LARGE_RAWCOUNT 0
Backup/Restore Throughput/sec PERF_COUNTER_BULK_COUNT 0
Bulk Copy Rows/sec PERF_COUNTER_BULK_COUNT 0
Bulk Copy Throughput/sec PERF_COUNTER_BULK_COUNT 0
Commit table entries PERF_COUNTER_LARGE_RAWCOUNT 0
Data File(s) Size (KB) PERF_COUNTER_LARGE_RAWCOUNT 4096
DBCC Logical Scan Bytes/sec PERF_COUNTER_BULK_COUNT 0
Group Commit Time/sec PERF_COUNTER_BULK_COUNT 0
Log Bytes Flushed/sec PERF_COUNTER_BULK_COUNT 204800
Log Cache Hit Ratio PERF_LARGE_RAW_FRACTION 0 0
Log Cache Reads/sec PERF_COUNTER_BULK_COUNT 0
Log File(s) Size (KB) PERF_COUNTER_LARGE_RAWCOUNT 1272
Log File(s) Used Size (KB) PERF_COUNTER_LARGE_RAWCOUNT 664
Log Flush Wait Time PERF_COUNTER_BULK_COUNT 1
Log Flush Waits/sec PERF_COUNTER_BULK_COUNT 23
Log Flush Write Time (ms) PERF_COUNTER_BULK_COUNT 1
Log Flushes/sec PERF_COUNTER_BULK_COUNT 23
Log Growths PERF_COUNTER_LARGE_RAWCOUNT 0
Log Pool Cache Misses/sec PERF_COUNTER_BULK_COUNT 3
Log Pool Disk Reads/sec PERF_COUNTER_BULK_COUNT 2
Log Pool Hash Deletes/sec PERF_COUNTER_BULK_COUNT 0
Log Pool Hash Inserts/sec PERF_COUNTER_BULK_COUNT 3
Log Pool Invalid Hash Entry/sec PERF_COUNTER_BULK_COUNT 0
Log Pool Log Scan Pushes/sec PERF_COUNTER_BULK_COUNT 3
Log Pool LogWriter Pushes/sec PERF_COUNTER_BULK_COUNT 0
Log Pool Push Empty FreePool/sec PERF_COUNTER_BULK_COUNT 3
Log Pool Push Low Memory/sec PERF_COUNTER_BULK_COUNT 0
Log Pool Push No Free Buffer/sec PERF_COUNTER_BULK_COUNT 0
Log Pool Req. Behind Trunc/sec PERF_COUNTER_BULK_COUNT 0
Log Pool Requests Old VLF/sec PERF_COUNTER_BULK_COUNT 4
Log Pool Requests/sec PERF_COUNTER_BULK_COUNT 8
Log Pool Total Active Log Size PERF_COUNTER_LARGE_RAWCOUNT 446464
Log Pool Total Shared Pool Size PERF_COUNTER_LARGE_RAWCOUNT 12288
Log Shrinks PERF_COUNTER_LARGE_RAWCOUNT 0
Log Truncations PERF_COUNTER_LARGE_RAWCOUNT 0
Percent Log Used PERF_COUNTER_LARGE_RAWCOUNT 52
Repl. Pending Xacts PERF_COUNTER_LARGE_RAWCOUNT 0
Repl. Trans. Rate PERF_COUNTER_BULK_COUNT 0
Shrink Data Movement Bytes/sec PERF_COUNTER_BULK_COUNT 0
Tracked transactions/sec PERF_COUNTER_BULK_COUNT 0
Transactions/sec PERF_COUNTER_BULK_COUNT 151
Write Transactions/sec PERF_COUNTER_BULK_COUNT 23
XTP Controller DLC Latency/Fetch PERF_AVERAGE_BULK 0 0
XTP Controller DLC Peak Latency PERF_COUNTER_LARGE_RAWCOUNT 0
XTP Controller Log Processed/sec PERF_COUNTER_BULK_COUNT 0
XTP Memory Used (KB) PERF_COUNTER_LARGE_RAWCOUNT 0

Not read by the collector:

  • PERF_AVERAGE_BULK: Avg Dist From EOL/LP Request
  • PERF_COUNTER_BULK_COUNT: PVS in-row diff generated/sec, PVS in-row diff retrieved/sec, PVS off-row pages allocated/sec, PVS off-row pages deleted/sec, PVS off-row record generated/sec, PVS off-row record retrieved/sec, Tail Log Cache Deletes/sec, Tail Log Cache Misses/sec, TLC LogWriter Pushes/sec, TLC Req. Behind Trunc/sec
  • PERF_COUNTER_LARGE_RAWCOUNT: WPR add lsn bucket miss, WPR bucket swaps, WPR stale check bucket miss

MSSQL$<instance>:General Statistics

Single-instance.

Counters the collector reads:

Counter Type Raw Base
Active Temp Tables PERF_COUNTER_LARGE_RAWCOUNT 0
Connection Reset/sec PERF_COUNTER_BULK_COUNT 75
Event Notifications Delayed Drop PERF_COUNTER_LARGE_RAWCOUNT 0
HTTP Authenticated Requests PERF_COUNTER_BULK_COUNT 0
Logical Connections PERF_COUNTER_LARGE_RAWCOUNT 0
Logins/sec PERF_COUNTER_BULK_COUNT 5
Logouts/sec PERF_COUNTER_BULK_COUNT 5
Mars Deadlocks PERF_COUNTER_BULK_COUNT 0
Non-atomic yield rate PERF_COUNTER_BULK_COUNT 0
Processes blocked PERF_COUNTER_LARGE_RAWCOUNT 0
SOAP Empty Requests PERF_COUNTER_BULK_COUNT 0
SOAP Method Invocations PERF_COUNTER_BULK_COUNT 0
SOAP Session Initiate Requests PERF_COUNTER_BULK_COUNT 0
SOAP Session Terminate Requests PERF_COUNTER_BULK_COUNT 0
SOAP SQL Requests PERF_COUNTER_BULK_COUNT 0
SOAP WSDL Requests PERF_COUNTER_BULK_COUNT 0
SQL Trace IO Provider Lock Waits PERF_COUNTER_BULK_COUNT 0
Temp Tables Creation Rate PERF_COUNTER_BULK_COUNT 2
Temp Tables For Destruction PERF_COUNTER_LARGE_RAWCOUNT 0
Tempdb recovery unit id PERF_COUNTER_BULK_COUNT 0
Tempdb rowset id PERF_COUNTER_BULK_COUNT 0
Trace Event Notification Queue PERF_COUNTER_LARGE_RAWCOUNT 0
Transactions PERF_COUNTER_LARGE_RAWCOUNT 0
User Connections PERF_COUNTER_LARGE_RAWCOUNT 0

MSSQL$<instance>:Locks

Multi-instance. Instances: _Total, AllocUnit, Application, Database, Extent, File, HoBT, Key, ... (15 in total). Sample instance: AllocUnit.

Counters the collector reads:

Counter Type Raw Base
Average Wait Time (ms) PERF_AVERAGE_BULK 0 0
Lock Requests/sec PERF_COUNTER_BULK_COUNT 0
Lock Timeouts (timeout > 0)/sec PERF_COUNTER_BULK_COUNT 0
Lock Timeouts/sec PERF_COUNTER_BULK_COUNT 0
Lock Wait Time (ms) PERF_COUNTER_BULK_COUNT 0
Lock Waits/sec PERF_COUNTER_BULK_COUNT 0
Number of Deadlocks/sec PERF_COUNTER_BULK_COUNT 0

MSSQL$<instance>:Memory Manager

Single-instance.

Counters the collector reads:

Counter Type Raw Base
Connection Memory (KB) PERF_COUNTER_LARGE_RAWCOUNT 2024
Database Cache Memory (KB) PERF_COUNTER_LARGE_RAWCOUNT 22704
External benefit of memory PERF_COUNTER_LARGE_RAWCOUNT 0
Free Memory (KB) PERF_COUNTER_LARGE_RAWCOUNT 7776
Granted Workspace Memory (KB) PERF_COUNTER_LARGE_RAWCOUNT 0
Lock Blocks PERF_COUNTER_LARGE_RAWCOUNT 0
Lock Blocks Allocated PERF_COUNTER_LARGE_RAWCOUNT 3050
Lock Memory (KB) PERF_COUNTER_LARGE_RAWCOUNT 768
Lock Owner Blocks PERF_COUNTER_LARGE_RAWCOUNT 0
Lock Owner Blocks Allocated PERF_COUNTER_LARGE_RAWCOUNT 5550
Log Pool Memory (KB) PERF_COUNTER_LARGE_RAWCOUNT 4376
Maximum Workspace Memory (KB) PERF_COUNTER_LARGE_RAWCOUNT 4500240
Memory Grants Outstanding PERF_COUNTER_LARGE_RAWCOUNT 0
Memory Grants Pending PERF_COUNTER_LARGE_RAWCOUNT 0
Optimizer Memory (KB) PERF_COUNTER_LARGE_RAWCOUNT 1024
Reserved Server Memory (KB) PERF_COUNTER_LARGE_RAWCOUNT 0
SQL Cache Memory (KB) PERF_COUNTER_LARGE_RAWCOUNT 1720
Stolen Server Memory (KB) PERF_COUNTER_LARGE_RAWCOUNT 297616
Target Server Memory (KB) PERF_COUNTER_LARGE_RAWCOUNT 5988752
Total Server Memory (KB) PERF_COUNTER_LARGE_RAWCOUNT 328096

Not read by the collector:

  • PERF_COUNTER_BULK_COUNT: Decommit Memory (KB)/sec

MSSQL$<instance>:SQL Errors

Multi-instance. Instances: _Total, DB Offline Errors, Info Errors, Kill Connection Errors, User Errors. Sample instance: DB Offline Errors.

Counters the collector reads:

Counter Type Raw Base
Errors/sec PERF_COUNTER_BULK_COUNT 0

MSSQL$<instance>:SQL Statistics

Single-instance.

Counters the collector reads:

Counter Type Raw Base
Auto-Param Attempts/sec PERF_COUNTER_BULK_COUNT 35
Batch Requests/sec PERF_COUNTER_BULK_COUNT 160
Failed Auto-Params/sec PERF_COUNTER_BULK_COUNT 27
Forced Parameterizations/sec PERF_COUNTER_BULK_COUNT 0
Guided plan executions/sec PERF_COUNTER_BULK_COUNT 0
Misguided plan executions/sec PERF_COUNTER_BULK_COUNT 0
Safe Auto-Params/sec PERF_COUNTER_BULK_COUNT 2
SQL Attention rate PERF_COUNTER_BULK_COUNT 0
SQL Compilations/sec PERF_COUNTER_BULK_COUNT 83
SQL Re-Compilations/sec PERF_COUNTER_BULK_COUNT 2
Unsafe Auto-Params/sec PERF_COUNTER_BULK_COUNT 6

MSSQL$<instance>:Transactions

Single-instance.

Counters the collector reads:

Counter Type Raw Base
Free Space in tempdb (KB) PERF_COUNTER_LARGE_RAWCOUNT 62528
Longest Transaction Running Time PERF_COUNTER_LARGE_RAWCOUNT 0
NonSnapshot Version Transactions PERF_COUNTER_LARGE_RAWCOUNT 0
Snapshot Transactions PERF_COUNTER_LARGE_RAWCOUNT 0
Transactions PERF_COUNTER_LARGE_RAWCOUNT 6
Update conflict ratio PERF_AVERAGE_BULK 0 0
Update Snapshot Transactions PERF_COUNTER_LARGE_RAWCOUNT 0
Version Cleanup rate (KB/s) PERF_COUNTER_BULK_COUNT 0
Version Generation rate (KB/s) PERF_COUNTER_BULK_COUNT 0
Version Store Size (KB) PERF_COUNTER_LARGE_RAWCOUNT 0
Version Store unit count PERF_COUNTER_LARGE_RAWCOUNT 2
Version Store unit creation PERF_COUNTER_LARGE_RAWCOUNT 2
Version Store unit truncation PERF_COUNTER_LARGE_RAWCOUNT 0

MSSQL$<instance>:Wait Statistics

Multi-instance. Instances: Average wait time (ms), Cumulative wait time (ms) per second, Waits in progress, Waits started per second. Sample instance: Average wait time (ms).

Counters the collector reads:

Counter Type Raw Base
Lock waits PERF_COUNTER_LARGE_RAWCOUNT 0
Log buffer waits PERF_COUNTER_LARGE_RAWCOUNT 0
Log write waits PERF_COUNTER_LARGE_RAWCOUNT 0
Memory grant queue waits PERF_COUNTER_LARGE_RAWCOUNT 0
Network IO waits PERF_COUNTER_LARGE_RAWCOUNT 0
Non-Page latch waits PERF_COUNTER_LARGE_RAWCOUNT 0
Page IO latch waits PERF_COUNTER_LARGE_RAWCOUNT 0
Page latch waits PERF_COUNTER_LARGE_RAWCOUNT 0
Thread-safe memory objects waits PERF_COUNTER_LARGE_RAWCOUNT 0
Transaction ownership waits PERF_COUNTER_LARGE_RAWCOUNT 0
Wait for the worker PERF_COUNTER_LARGE_RAWCOUNT 0
Workspace synchronization waits PERF_COUNTER_LARGE_RAWCOUNT 0
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