Interesting.
Regarding timing - I noticed some actions HMC and SE actions on z16 are
performed with multi-second delays.
Maybe it is completely unrelated, but visible.
--
Radoslaw Skorupka
Lodz, Poland
W dniu 18.02.2025 o 21:07, rpinion865 pisze:
Hey, I know how to fix that. Old story, new IBM 370/158 installed by third party. IPLed 158 and it
ran for a few hours and then died. IPLed again, same thing. Third party CE attempted to diagnose the
problem. After several hours, the third party gave up and agreed to pay for IBM to diagnose the
problem. Local CEs unable to diagnose the problem. Problem escalated to level 1 & level 2. Still
no solution. After 24 hours of this, IBM flew in one of the 370/158 engineers to the site. The
engineer asked to IPL the 158. After a short time it died. The engineer walked to the back of the 158
and removed the panel. After a few minutes, the engineer said there was a wire that was too long.
Everybody on site thought "yeah right". The engineer created a shorter cable and installed
it. The 158 was IPLed and it ran without a problem. The IBM engineer stated it was a "timing
problem" because a signal was supposed to reach its destination in x microseconds. Due to the
cable being too long, it was taking x + y microseconds.
No, this is not an urban legend, it really happened.
"Confidentially doc, I am the wabbit."
Bugs Bunny
Sent with Proton Mail secure email.
On Tuesday, February 18th, 2025 at 2:53 PM, Glen Garrison<[email protected]>
wrote:
No, It is hardware truly loading an incorrect (invalid) wait state code due to
a timing issue with the SE.
________________________________
From: IBM Mainframe Discussion [email protected] on behalf of
Radoslaw [email protected]
Sent: Tuesday, February 18, 2025 2:50 PM
To:[email protected] [email protected]
Subject: [EXTERNAL] Re: New WAIT state in z/OS 3.1?
Only IBM employees and IBM Business Partners accounts permitted.
Is it secret or just wrong link?
--
Radoslaw Skorupka
Lodz, Poland
W dniu 18.02.2025 o 20:43, Glen Garrison pisze:
That is not a valid wait state code. It is described
in:https://supportcontent.ibm.com/support/pages/node/7031616.
________________________________
From: IBM Mainframe [email protected] on behalf of
[email protected]
Sent: Tuesday, February 18, 2025 2:39 PM
To:[email protected] [email protected]
Subject: [EXTERNAL] New WAIT state in z/OS 3.1?
I've got wait state 17c
However it is not documented in System Codes!
Any clue?
Full PSW
0400000080000000000000002000017c
--
Radoslaw Skorupka
Lodz, Poland
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