Comments on: T-SQL Tuesday #118 My Fantasy SQL Server Feature

By: Chris Wood

Chris Wood — Fri, 13 Sep 2019 13:44:20 +0000

It might get a little more complicated with the Intel bugs meaning that hyper-threading could be off or on but I’m sure a good scanning would bring up your servers performance level scores for I/O and CPU. The cost threshold adjustment could become a bit of a crapshoot. If you happen to be under say VMWare and thru VMotion got moved you would need a re-scanning.

I’m sure it could be done. Microsoft Tiger Team have many talented people

By: Glenn Berry

Glenn Berry — Thu, 12 Sep 2019 19:41:26 +0000

Thanks! Microsoft says that it uses a “cost-based optimizer”, so having a more accurate understanding of what different operations actually cost on the system you are running on seems like it would be a good idea, at least to me.

By: Chris Wood

Chris Wood — Thu, 12 Sep 2019 18:33:51 +0000

I like this idea.
Compare the I/O and CPU to the late 1990’s workstation that the optimizer bases scores on.
So todays disk performance is 20 times better than the old one say. Now your disk performance should score at 5% of the baseline. The cost threshold would have to be adjusted too to reflect the better hardware than late 1990″s