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<== Date ==> <== Thread ==>

Subject: generalTime/epicsTimeGetCurrent and casr questions
From: "Layne \(US\), William C via Tech-talk" <tech-talk@aps.anl.gov>
To: "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Sat, 9 Mar 2019 00:18:15 +0000

Hello, haven’t posted here before so here it goes. (Recently completed some training and was encouraged to reach out more)

 

I figure I will start with some of the more softball questions as we are seeing various issues here:

1.       Has anyone seen issues with multiple threads using the generalTime subsystem?

a.       We are having some performance issues with a large number of clients (>100) and am trying to narrow down which futex we are spending lots of time in. I will run some tests later this week to see if the ‘timeListLock’ could be impacting them.

2.       I am noticing that in some of our ‘casr’ outputs, we are seeing multiple TCP connections with the same PV channel connected. Is this normal behavior?

a.       For some reason, I assumed Channel Access wouldn’t allow this. If it is normal behavior, any suggestions on ways to prevent it? (I know having the users checking would be a good way J)

 

Hope to be participating more. Thanks,

 

William ‘Casey’ Layne

Stage Controller – Software Engineer

Email: william.c.layne@boeing.com

 Any opinions expressed herein are my own.  They are not necessarily those of Boeing, or any other company or organization with which I am affiliated.

 


Replies:
Re: generalTime/epicsTimeGetCurrent and casr questions Mark Rivers via Tech-talk
Re: generalTime/epicsTimeGetCurrent and casr questions Michael Davidsaver via Tech-talk

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