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| <== Date ==> | <== Thread ==> |
|---|
| Subject: | IOC warning when connecting to 64 devices |
| From: | Abdalla Ahmad via Tech-talk <tech-talk at aps.anl.gov> |
| To: | "tech-talk at aps.anl.gov" <Tech-talk at aps.anl.gov> |
| Date: | Tue, 6 May 2025 07:47:56 +0000 |
|
Hi We developed an asyn port driver for a group of power supplies, 64 in total, controlled via Ethernet. When the IOC was developed to connect
to all power supplies at once, I got the following warning: callbackRequest: cbLow ring buffer full The IOC became slow and could not handle processing some PVs at .1 second scan. I ended up splitting the main IOC into 4 IOCs each controlling
16 devices and the system is working fine. I would like to know more what causes this warning and is it possible to have 1 IOC controlling all 64 devices? Best Regards, Abdalla Al-Dalleh Control Engineer SESAME
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