I don't think the blocking solution is right. We have it right now in the old client and it appears to be much worse (see the first post). I suspect that the syscalls are at fault only indirectly here: ie. triggering a problem elsewhere, like lock contention or something of this sort. I will try to find a way to profile where the system time is being spent. --- Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/20#issuecomment-18394877 ######################################################################## 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