Hi, This error has been verified at least in xrootd 4.11.3 and I suspect it's also in 4.12.3 as we were seeing the same problem when debugging something else. The problem has been verified on both our head-node (VM hosted on a libvirtd+CentOS8 host) and on a bare metal `Dell Inc. PowerEdge R510` both running CentOS7.8 Unfortunately the problem of connection resets happens for both local and remote connections to the same service which rules out most of the kernel settings I would normally check. ``` [root@srm ~]# cat /proc/`pidof xrootd`/limits Limit Soft Limit Hard Limit Units Max cpu time unlimited unlimited seconds Max file size unlimited unlimited bytes Max data size unlimited unlimited bytes Max stack size 8388608 unlimited bytes Max core file size unlimited unlimited bytes Max resident set unlimited unlimited bytes Max processes 30000 128301 processes Max open files 65536 65536 files Max locked memory 65536 65536 bytes Max address space unlimited unlimited bytes Max file locks unlimited unlimited locks Max pending signals 128301 128301 signals Max msgqueue size 819200 819200 bytes Max nice priority 0 0 Max realtime priority 0 0 Max realtime timeout unlimited unlimited us ``` Additionally the following have been set in the override.conf (probably unrelated but for sake of clarity): ``` Environment=MALLOC_ARENA_MAX=4 Environment=XRD_MAXREDIRECTCOUNT=1 LimitCORE=infinity Environment=DAEMON_COREFILE_LIMIT=unlimited ``` I've attached the xrootd config (minus-secrets) from one of the disk nodes (bare metal) which have had this problem. Unfortunately this is as deployed by puppet for DPM modulo some reduction in whitespace. [xrootd.cfg.txt](https://github.com/xrootd/xrootd/files/5006696/xrootd.cfg.txt) -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/1266#issuecomment-667068303 ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-DEV list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-DEV&A=1