dom/telegraf
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Add support for collecting SQL Requests to identify waits and blocking (#6144)

Browse Source
This commit is contained in:
denzilribeiro
2019-07-22 17:04:15 -05:00
committed by Daniel Nelson
parent 6f2e57ad64
commit 109d1e1e15
2 changed files with 64 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

60
plugins/inputs/sqlserver/sqlserver.go
View File

@@ -69,6 +69,7 @@ var sampleConfig = `
## - Schedulers
## - AzureDBResourceStats
## - AzureDBResourceGovernance
## - SqlRequests
exclude_query = [ 'Schedulers' ]
`
@@ -103,6 +104,7 @@ func initQueries(s *SQLServer) {
queries["ServerProperties"] = Query{Script: sqlServerPropertiesV2, ResultByRow: false}
queries["MemoryClerk"] = Query{Script: sqlMemoryClerkV2, ResultByRow: false}
queries["Schedulers"] = Query{Script: sqlServerSchedulersV2, ResultByRow: false}
queries["SqlRequests"] = Query{Script: sqlServerRequestsV2, ResultByRow: false}
} else {
queries["PerformanceCounters"] = Query{Script: sqlPerformanceCounters, ResultByRow: true}
queries["WaitStatsCategorized"] = Query{Script: sqlWaitStatsCategorized, ResultByRow: false}
@@ -1356,6 +1358,64 @@ BEGIN
END;
`
const sqlServerRequestsV2 string = `
SET NOCOUNT ON;
SELECT blocking_session_id into #blockingSessions FROM sys.dm_exec_requests WHERE blocking_session_id != 0
create index ix_blockingSessions_1 on #blockingSessions (blocking_session_id)
SELECT
'sqlserver_requests' AS [measurement],
@@servername AS [sql_instance],
DB_NAME() as [database_name],
r.session_id
, r.request_id
, DB_NAME(s.database_id) as session_db_name
, r.status
, r.cpu_time as cpu_time_ms
, r.total_elapsed_time as total_elasped_time_ms
, r.logical_reads
, r.writes
, r.command
, wait_time as wait_time_ms
, wait_type
, wait_resource
, blocking_session_id
, s.program_name
, s.host_name
, s.nt_user_name
, r.open_transaction_count AS open_transaction
, LEFT (CASE COALESCE(r.transaction_isolation_level, s.transaction_isolation_level)
WHEN 0 THEN '0-Read Committed'
WHEN 1 THEN '1-Read Uncommitted (NOLOCK)'
WHEN 2 THEN '2-Read Committed'
WHEN 3 THEN '3-Repeatable Read'
WHEN 4 THEN '4-Serializable'
WHEN 5 THEN '5-Snapshot'
ELSE CONVERT (varchar(30), r.transaction_isolation_level) + '-UNKNOWN'
END, 30) AS transaction_isolation_level
,r.granted_query_memory as granted_query_memory_pages
, r.percent_complete
, (SUBSTRING(qt.text, r.statement_start_offset / 2 + 1,
(CASE WHEN r.statement_end_offset = -1
THEN LEN(CONVERT(NVARCHAR(MAX), qt.text)) * 2
ELSE r.statement_end_offset
END - r.statement_start_offset) / 2)
) AS statement_text
, qt.objectid
, QUOTENAME(OBJECT_SCHEMA_NAME(qt.objectid,qt.dbid)) + '.' + QUOTENAME(OBJECT_NAME(qt.objectid,qt.dbid)) as stmt_object_name
, DB_NAME(qt.dbid) stmt_db_name
, r.query_hash
, r.query_plan_hash
FROM sys.dm_exec_requests r
LEFT OUTER JOIN sys.dm_exec_sessions s ON (s.session_id = r.session_id)
OUTER APPLY sys.dm_exec_sql_text(sql_handle) AS qt
WHERE 1=1
AND (r.session_id IS NOT NULL AND (s.is_user_process = 1 OR r.status COLLATE Latin1_General_BIN NOT IN ('background', 'sleeping')))
OR (s.session_id IN (SELECT blocking_session_id FROM #blockingSessions))
OPTION(MAXDOP 1)
`
// Queries V1
const sqlPerformanceMetrics string = `SET DEADLOCK_PRIORITY -10;
SET NOCOUNT ON;