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xPerf: Once I Was Blind and Now I See
I’ve been aware of the buzz around xPerf for quite some time.  I flagged emails from Microsoft Premier Field Engineers Clint Huffman (author of PAL ) & Shane Creamer (author of Vital Signs ) who in internal DLs both cited the tool way back in Read More...
Posted 08 September 09 11:10 by Jimmy May | 4 Comments   
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Disk Partition Alignment (Sector Alignment): Make the Case: Save Hundreds of Thousands of Dollars
I recently collaborated with Microsoft PFE Daniel Janik to create a template to make the case for disk partition alignment. Perhaps your customers or stakeholders within your organization can benefit. This work was recently broadcast throughout PFE DLs Read More...
Posted 08 May 09 02:15 by Jimmy May | 6 Comments   
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Wait Stats by Joe Sack
Wait stats rock. As I shared recently with friends, when it comes to SQL Server performance, wait stats are the #1 arrow in my quiver, the first tool out of my toolbox, the Vera of guns (see the Firefly episode Our Mrs. Reynolds to divine that reference). Read More...
Posted 27 April 09 11:15 by Jimmy May | 2 Comments   
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Attachment(s): Joe Sack wait stats.sql
Wait Stats Introductory References
Preamble For those of you who are already facile with SQL Server wait stats, there’s nothing new here. However, if you’re a n00b, this is a great place to start. History As I commented here on SQL MVP Jason Massie’s blog , I first became aware of the Read More...
Posted 26 April 09 06:23 by Jimmy May | 3 Comments   
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Disk I/O Case Study: Classic Case of SAN Over-Subscription
SAN Over-Subscription There are a variety of challenges related to I/O performance. One common problem is "SAN Over-Subscription", which is characterized by the the following symptoms: High disk latency and Low IOPs & Throughput As MS PFE & fellow Read More...
Posted 15 March 09 09:21 by Jimmy May | 2 Comments   
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Disk I/O: Microsoft SQL Server on SAN Best Practices from SQL CAT's Mike Ruthruff (& Prem Mehra)
While at the PASS Community Summit in November 2008, I had the pleasure of attending a handful of excellent presentations. One of the best was delivered by Mike Ruthruff (& not just because he shilled for my presentation on disk partition alignment Read More...
Posted 01 March 09 11:44 by Jimmy May | 3 Comments   
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Attachment(s): Mike_Ruthruff_SQLServer_on_SAN_SQLCAT.zip
Disk Partition Alignment (Sector Alignment) for SQL Server: Part 4: Essentials (Cheat Sheet)
The purpose of this post is to document Disk Partition Alignment Essentials. It is intended for engineers who are already familiar with disk partition alignment yet want a “cheat sheet”. As most of you know, partition alignment is an essential best practice. Read More...
Posted 04 December 08 10:40 by Jimmy May | 11 Comments   
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Attachment(s): Disk Partition Alignment (Sector Alignment) for SQL Server - Part 4 - Essentials (Cheat Sheet) -- Jimmy May.zip
Case Study: Part 2: CXPACKET Wait Stats & 'max degree of parallelism' Option: Suppressing Query Parallelism Eliminated CXPACKET Waits & Liberated 30% of CPU
Introduction This is the second of a four-part series: Introduction to Query Parallelism Parallelism Suppression: Analysis, Remediation, & Results (this post) Parallel Query Identification & Remediation Summary Executive Summary In my first post Read More...
Posted 02 December 08 11:49 by Jimmy May | 3 Comments   
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Disk Partition Alignment (Sector Alignment) for SQL Server: Part 1: Slide Deck
<Note: 20081119: Deck updated w/ new graphics, perf metrics, & dynamic disk info> <Note: 20090225: Deck updated & moved to skydrive > <Note: See also Disk Partition Alignment (Sector Alignment) for SQL Server: Part 4: Essentials Read More...
Posted 14 October 08 11:57 by Jimmy May | 18 Comments   
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Attachment(s): DPA Deck Info.txt

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