Oh - 100% there are libraries that Xrootd links against which might spawn threads. Why would it start triggering now though? Is something unexpectedly enabling AIO? -- 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/1113#issuecomment-574854063 ######################################################################## 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