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Hello, We have been experiencing an issue at Purdue where our redirector and servers will stop responding to client requests to read data. It looks like the issue happens during the authentication process. The xrootd process stops logging anything during this time. The only solution I have found is to restart the xrootd process. After that, things start working normally again. I attached output from strace, netstat, lsof and limits. Strace shows a bunch of read/writes for what looks like lcmaps logging. Netstat shows a ton of connections in a CLOSE_WAIT state, but not to the point were the process is going to run out of FDs. Also I attached two attempts at xrdcp from an unresponsive server. One when getting redirected from our redirector and one when copying directly from the server. Other processes on the same server like gridftp are still authenticating with gums properly during this time. Can you help? We are facing servers becoming responsive on a daily basis. Please let me know if you need more information. There is also an OSG ticket on this issue: https://ticket.grid.iu.edu/20867 Thanks, -Erik ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1