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Hi Carissa, et. al, Carissa Klemmer wrote: > I've got great news. Bhagat made the change to net.ipv4.ipfrag_max_dist=4096 > in Boulder. We went from seeing 4-5 OOPS errors/minute to 6 over the last > hour. > This is now on par with the errors we see in College Park. We will wait a > little > more time and then test the setting to 0 to see if we can eliminate the errors > completely. But given this wonderful improvement I think it is safe to cancel > this meeting. I appreciate the support of everyone jumping in to assist, and > discovering discrepancies on the systems that we will still work towards > fixing. This is excellent news! For interest, I counted the number of "OOPS" error messages (ERROR: OOPS) that we have seen on both of our Linux-based NOAAport ingest machines here in UCAR for the past week. Here are the results: Day # OOPS error messages CCYYMMDD leno chico ---------+------------------------- 20180212 0 0 (partial day) 20180211 3 1 20180210 0 1 20180209 0 0 20180208 2 1 20180207 126 125 20180206 6 7 20180205 2 1 Comments: - each of our ingest machines is connected to its own Novra S300N receiver We interpret the difference in ingest quality to be entirely a function of the Novra S300N receiver it is connected to. We have been told that the Novra S300N receivers are essentially hand built, and that there can be quite a bit of difference in their ability to process the NOAAPort datastream. - both Novra S300N receivers get their signal from the same NOAAport dish We split the signal from the dish 7 ways, but only have Novra S300Ns connected to 4 our the 7 outputs; two of the Novra S300Ns are ours and 2 are COMET's. The other outputs have terminators installed. - we do not routinely count OOPS messages in the NOAAPort ingest log files Instead, we farm our log files every day and record measures of ingest quality. Here are the last 7 days for both of our ingest machines mentioned above: leno: leno:: 20180205.204102: nGap: 23 nFrame: 30 nGsec: 10 nGmin: 8 leno:: 20180206.235958: nGap: 277 nFrame: 5027 nGsec: 59 nGmin: 29 leno:: 20180207.222601: nGap: 14512 nFrame: 1327620418 nGsec: 1240 nGmin: 34 leno:: 20180208.235340: nGap: 14 nFrame: 33 nGsec: 6 nGmin: 5 leno:: 20180209.225601: nGap: 90 nFrame: 1644 nGsec: 20 nGmin: 16 leno:: 20180210.234001: nGap: 25 nFrame: 74 nGsec: 9 nGmin: 9 leno:: 20180211.221201: nGap: 53 nFrame: 157 nGsec: 13 nGmin: 12 chico: chico:: 20180205.135535: nGap: 10 nFrame: 18 nGsec: 6 nGmin: 6 chico:: 20180206.235958: nGap: 273 nFrame: 2379 nGsec: 57 nGmin: 28 chico:: 20180207.221436: nGap: 14515 nFrame: 1327612491 nGsec: 1240 nGmin: 30 chico:: 20180208.235340: nGap: 15 nFrame: 38 nGsec: 8 nGmin: 7 chico:: 20180209.224701: nGap: 84 nFrame: 1657 nGsec: 18 nGmin: 13 chico:: 20180210.234002: nGap: 29 nFrame: 99 nGsec: 5 nGmin: 4 chico:: 20180211.213301: nGap: 52 nFrame: 177 nGsec: 10 nGmin: 8 The numbers being logged are: nGap - number of Gap messages (we focus on Gap instead of OOPS messages) nFrame - number of missed frames nGsec - number of seconds in which we saw Gap messages nGmin - number of minutes in which we saw Gap messages I hope that this info is useful! 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: MFT-584849 Department: Support NOAAPORT 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.