Scaling Up Monitoring
How do we design a monitoring system? The Amazon Prime team realized they didn't do a good job and changed their architecture.
2023-05-31
219 reads
Performance Monitoring
The Complexity of Metrics
We need to monitor our servers, but individual metrics have more complexity than just setting simple limits for their readings.
2023-02-06 (first published: 2023-01-30)
367 reads
SQL Server memory node memory footprints
Querying perfmon data to track memory usage patterns on NUMA nodes
2019-05-31
Extended Events Max Dispatch Latency
The max_dispatch_latency property is the maximum duration that an event, once captured, would reside in the buffer before written to the target. The default for this property is 30 seconds, which is fine in practice but for live demos you can consider reducing it (minimum is 1 second).
2019-05-31
Average Page Life Expectancy
A useful script that I wrote that will sample the DMV sys.dm_os_performance_counters table to provide an average PLE captured in (1) minute intervals.
2010-12-01 (first published: 2010-11-16)
1,702 reads
Performance Counter DMV sys.dm_os_performance_counters
By querying a single DMV, sys.dm_os_performance_counters to be precise, you can collect counter information that you would receive from PerfMon for the various SQL Server counters.
2010-06-29
3,559 reads
Automating Performance Monitor Statistics Collection for SQL Server and Windows
You have about 100 SQL Servers installed in your production environment. You have performance problems on few of the servers, but they happen during the time when you are not watching the servers. So, how can you automate performance statistics collection on all the servers around the clock so we have the statistics for 24/7/365.
2009-07-08
3,919 reads
Collecting performance counters and using SQL Server to analyze the data
Quite frequently I find myself in situation where I need to get detailed information on performance monitor counters. For example I need to determine which processes are consuming all CPU at certain times.
2009-04-09
3,720 reads
2008-07-31
3,068 reads
Investigating SQL Server 2008 Wait Events with XEVENTS
Some reasons for the slow-running of database applications aren't obvious. Occasionally, even the profiler won't tell you enough to remedy a problem, especially when a SQL Statement is being forced to wait. Now, in SQL Server 2008, come XEvents, which allow you to look at those waits that are slowing your SQL Statements. Mario Broodbakker continues his series about SQL Server Wait Events
2008-07-30
2,343 reads
Blogs
A Last Minute Trip to the EU
By Steve Jones
My life has some crazy travel stretches for sure. Between speaking, office visits, customer...
Part 3 of 3: Tuning DiskANN — R, Alpha, L, Beam Width, Recall and Latency
In Part 1, we saw how ‘Vamana’ represents vectors as nodes, connects them with...
Automated SQL Server Benchmarking with HammerDB and Docker: A Complete Testing Framework
I’m excited to announce the release of a new open-source project that fully automates...
Forums
Optional Parameter Plan Optimization in SQL Server 2025: Fixing the Kitchen-Sink Search Procedure
Comments posted to this topic are about the item Optional Parameter Plan Optimization in...
AI Experience Gap that we keep talking about
Comments posted to this topic are about the item AI Experience Gap that we...
Question of the Day
ORDER BY alias
There is a table tmp_tab:
CREATE TABLE tmp_tab ( id int, val int );
INSERT INTO tmp_tab VALUES (1, 1), (2, NULL), (3, 3), (4, 4), (5, 5);You want to order the rows ids by the following expression:
ISNULL(val, id) + 1Which of the following queries produces the expected ordering and why? (Select all correct) See possible answers