Hi, did you manage to get some information from the xrootd.log? On our side, we are experiencing thread saturation with no traffic more than once per day, and every time a restart of the service in each of the 4 servers is needed to resume traffic. It is pretty hard to believe some outstanding activity is undergoing this often somewhere in the CMS filesystem and completely hiding from our monitoring: we see no blocking, no pending operations, nothing weird gpfs-side. In case it is useful, we attach a file containing the output of "netstat -an" during thread saturation in one of the server. Let us know how we can debug further. Thanks for your help, lucia [netstat_an.txt](https://github.com/xrootd/xrootd/files/9989884/netstat_an.txt) -- Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/1799#issuecomment-1311588842 You are receiving this because you commented. Message ID: <[log in to unmask]> ######################################################################## 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