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erikdarlingdataerikdarlingdata
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Merge pull request #761 from erikdarlingdata/dev
Merge dev to main: top blocking query finding
2 parents cbbc26f + 618d798 commit ff46dc7

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‎sp_HumanEvents/sp_HumanEventsBlockViewer.sql‎

Lines changed: 227 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -3555,6 +3555,233 @@ BEGIN
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b.host_name
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OPTION(RECOMPILE);
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IF @debug = 1
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BEGIN
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RAISERROR('Inserting #block_findings, check_id 9', 0, 1) WITH NOWAIT;
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END;
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3563+
WITH
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blocker_waits AS
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(
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SELECT
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b.database_name,
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query_text_pre =
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b.query_text_pre,
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b.transaction_id,
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sql_handle =
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CONVERT
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(
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varbinary(64),
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b.blocked_process_report.value
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(
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'(/event/data/value/blocked-process-report/blocking-process/process/executionStack/frame[not(@sqlhandle = "0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")]/@sqlhandle)[1]',
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'varchar(130)'
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),
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1
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),
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stmtstart =
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ISNULL
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(
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b.blocked_process_report.value
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(
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'(/event/data/value/blocked-process-report/blocking-process/process/executionStack/frame[not(@sqlhandle = "0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")]/@stmtstart)[1]',
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'integer'
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),
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0
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),
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stmtend =
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ISNULL
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(
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b.blocked_process_report.value
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(
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'(/event/data/value/blocked-process-report/blocking-process/process/executionStack/frame[not(@sqlhandle = "0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")]/@stmtend)[1]',
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'integer'
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),
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-1
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),
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wait_time_ms =
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ISNULL
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(
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b.blocked_process_report.value
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(
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'(/event/data/value/blocked-process-report/blocked-process/process/@waittime)[1]',
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'bigint'
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),
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0
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)
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FROM #blocks AS b
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WHERE b.activity = 'blocking'
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AND (b.database_name = @database_name
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OR @database_name IS NULL)
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AND (b.contentious_object = @object_name
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OR @object_name IS NULL)
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),
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blocker_per_victim AS
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(
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SELECT
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bw.database_name,
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bw.sql_handle,
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bw.stmtstart,
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bw.stmtend,
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bw.query_text_pre,
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bw.transaction_id,
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wait_time_ms =
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MAX(bw.wait_time_ms)
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FROM blocker_waits AS bw
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WHERE bw.sql_handle IS NOT NULL
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GROUP BY
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bw.database_name,
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bw.sql_handle,
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bw.stmtstart,
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bw.stmtend,
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bw.query_text_pre,
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bw.transaction_id
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)
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INSERT
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#block_findings
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(
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check_id,
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database_name,
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object_name,
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finding_group,
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finding,
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sort_order
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)
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SELECT
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check_id =
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9,
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bpv.database_name,
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object_name =
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LEFT
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(
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REPLACE
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(
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REPLACE
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(
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ISNULL
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(
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MAX(bpv.query_text_pre),
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N'[Unknown]'
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),
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NCHAR(13),
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N' '
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),
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NCHAR(10),
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N' '
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),
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200
3673+
),
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finding_group =
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N'Top Blocking Query',
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finding =
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N'This query caused ' +
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CONVERT
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(
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nvarchar(30),
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(
3682+
SUM
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(
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CONVERT
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(
3686+
bigint,
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bpv.wait_time_ms
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)
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) / 1000 / 86400
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)
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) +
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N' ' +
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CONVERT
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(
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nvarchar(30),
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DATEADD
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(
3698+
SECOND,
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(
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SUM
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(
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CONVERT
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(
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bigint,
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bpv.wait_time_ms
3706+
)
3707+
) / 1000 % 86400
3708+
),
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'19000101'
3710+
),
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14
3712+
) +
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N' of blocking wait time (' +
3714+
ISNULL
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(
3716+
CONVERT
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(
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nvarchar(10),
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CONVERT
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(
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decimal(5, 1),
3722+
100.0 *
3723+
SUM
3724+
(
3725+
CONVERT
3726+
(
3727+
bigint,
3728+
bpv.wait_time_ms
3729+
)
3730+
) /
3731+
NULLIF
3732+
(
3733+
SUM
3734+
(
3735+
SUM
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(
3737+
CONVERT
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(
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bigint,
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bpv.wait_time_ms
3741+
)
3742+
)
3743+
) OVER (),
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0
3745+
)
3746+
)
3747+
),
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N'0.0'
3749+
) +
3750+
N'% of total) across ' +
3751+
CONVERT
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(
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nvarchar(20),
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COUNT_BIG(DISTINCT bpv.transaction_id)
3755+
) +
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N' blocked sessions.',
3757+
sort_order =
3758+
ROW_NUMBER() OVER
3759+
(
3760+
ORDER BY
3761+
SUM
3762+
(
3763+
CONVERT
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(
3765+
bigint,
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bpv.wait_time_ms
3767+
)
3768+
) DESC
3769+
)
3770+
FROM blocker_per_victim AS bpv
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GROUP BY
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bpv.database_name,
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bpv.sql_handle,
3774+
bpv.stmtstart,
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bpv.stmtend
3776+
HAVING
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SUM(CONVERT(bigint, bpv.wait_time_ms)) * 10 >=
3778+
(
3779+
SELECT
3780+
SUM(CONVERT(bigint, bpv2.wait_time_ms))
3781+
FROM blocker_per_victim AS bpv2
3782+
)
3783+
OPTION(RECOMPILE);
3784+
35583785
IF @debug = 1
35593786
BEGIN
35603787
RAISERROR('Inserting #block_findings, check_id 1000', 0, 1) WITH NOWAIT;

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