Ciao, I have a server under very heavy load (1 GB/s incoming, 200 MB/s outgoing - these are bytes, not bits!), which is failing all the xrootd file serving, with stuff like 140709 16:22:20 7453 XrdLink: Unable to send file to cmsplt00.41552:[log in to unmask]; operation canceled 140709 16:22:20 7453 XrootdXeq: cmsplt00.41552:[log in to unmask] disc 0:05:21 (sendfile failure) I see no other real problems on that ... any hint on what can be the problem? FS? network saturated? I really see tons of rootd connections: [root@stormgf1 cms]# netstat|grep rootd|wc 2033 12203 180956 this is 5 min after a restart, and they are still increasing .... the other thing I do not get is why the other server (stormgf2.pi.infn.it) is getting instead < 1/2 of the files can you confirm the error is just due to high traffic and NOT to (for example) max threads reached or so? tom -- Tommaso Boccali INFN Pisa ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1