Do you have access to igprof (http://igprof.org/)? I find it to be a phenomenal tool for statistical CPU profiling; may prove to be useful in this case. Another thing to look at is perf and/or ftrace. --- Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/20#issuecomment-18303485 ######################################################################## 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