January 13, 2021 at 12:54 pm
I am assisting with a migration. doing a V to V migration from a legacy environment to the hosted infrastructure.
I want to do some baseline testing and wondered if there are some scripts i could run in SQL that i could run on the legacy and on the new environment to compare so I can prove the new environment is better than the existing one. Or not 🙂
I know there are toolsets out there but I don't believe I will be able to install anything on these boxes.
January 13, 2021 at 1:52 pm
Personally, I'd got the third party route. It's going to be a lot easier. However, yeah, there are tools. First, get PerfMon. Capture the appropriate counters there. You can program a script, or use the GUI and then retrieve a script, so that you're capturing the same metrics on both platforms. Get that data into a database and then you can run queries against it to compare the two result sets. Next, get Extended Events. You can capture the query behaviors the same way. Again, these can be easily scripted. Output them to a file, then import that into tables. Run queries to do the comparison.
Now, if you want specific counters to capture, that's a gigantic discussion. Four chapters of my query tuning book, linked below, are dedicated to the correct counters to understand disk, memory, CPU, I/O and query performance. Go there for the details.
Or, look to a 3rd party tool that has already done this massive amount of work. It'll be a lot easier. Plus you get ongoing monitoring, historical tracking, alerting, and all the rest of the stuff that you should already have set up on your server.
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
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Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning
January 13, 2021 at 2:27 pm
Thanks for that I will take a look at your link.
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