Investigating Archiver Appliance lost events

[Abdalla Ahmad via Tech-talk <tech-talk at aps.anl.gov>]

Hi

 

This morning we noticed strange behavior on the archiver, it unable to write PB files for a large number of PVs, we noticed this behavior when doing live plots where the plotter plots only the first few 3 or 4 sample and no archived data at all. During troubleshooting, I noticed on one of the problematic PVs it had on its Details page the following parameters increasing every second (i.e. every sample received):

 

• How many events lost because the sample buffer is full so far?
• How many events lost totally so far?

 

Both AA and OS logs were not helpful, I ended up rebooting the server itself. My question is which buffer is the details page referring to? Is it buffer within AA itself or the OS?

 

Best Regards,

Abdalla Al-Dalleh

Control Engineer

SESAME

P.O. Box 7, Allan 19252, Jordan
Tel: +96253511348 , ext. 265

Fax: +96253511423

Email : abdalla.ahmad at sesame.org.jo
Website: www.sesame.org.jo