WP7126: Dave:

The BIOS setting on h1susey was modifed in an attempt to stop the periodic ADC glitching seen on these faster computers. Gerrit at AEI discovered that disabling the 'turbo' cpu mode fixed the glitching.

The BIOS path to the relevant screen is Advanced -> CPU Configuration -> CPU Power Management Configuration

The 'Power Technology' item was changed from 'Max Performance' to 'Disabled'

Before this change both h1susex and h1susey were glitching (approximately several times per day), now hopefully h1susey will stop glitching.

Unfortunately, even though I manually took h1susey out of the Dolphin fabric, and ran its power off script, it still glitched the EY Dolphin on restart. All models on h1seiey and h1iscey needed to be restarted. For now on we will assume this glitching can happen and put SEI into its SAFE state before rebooting SUS.

The CPU usage of the models running on h1susey are shown in the second trend plot attached (two hour trend, BIOS change in the middle). The IOP model (Ch 3) does not show any change. SUSETMY (Ch 4) is running 2uS longer (33uS to 35uS). SUSTMSY (Ch 5) is running 1uS longer. SUSETMYPI (Ch 6) is running 1-2uS longer.

All are well within nominal range.