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Hi Hsie, re: > Thank Tom. The system had been running fine. Are you seeing 'processed oldest product' messages in the LDM log file? If yes, it means that the 'pqact' invocation that is writing the messages is not keeping up with the processing it is intended to do. re: > The system load and I/O > are reasonable. Yup, the 'processed oldest product' messages are an indication that the I/O subsystem is not keeping up, not there not being enough CPU resources. re: > IT seems to start when I upgrade ldm to version 6.13.0 > (???). I am going back to version 6.11.7 now. Hmm... Very interesting. Please let us know if reverting back to LDM 6.11.7 results in processing problems going away (it shouldn't, but...)! Cheers, Tom -- **************************************************************************** Unidata User Support UCAR Unidata Program (303) 497-8642 P.O. Box 3000 address@hidden Boulder, CO 80307 ---------------------------------------------------------------------------- Unidata HomePage http://www.unidata.ucar.edu **************************************************************************** Ticket Details =================== Ticket ID: GLG-935498 Department: Support IDD Priority: Normal Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.