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On 07/12/2013 10:44 PM, Andrew Hanushevsky wrote: > Hi Adrian, Hi! > Not at all. XRootD is fully multi-threaded and can use as many cores as > you have. When this situation occurs it's normally due to an error in a > plug-in where all the requests pileup on a single core. When you see > this happen, a simple pstack of the process along with the day's log > file will help us determine what the issue is. Did this resolve itself? No, at random times (depending of the number of requests) the dataservers gets locked and i have to restart the xrootd services .. Given that ALICE use at best 3.2.6 i imagine that would be pointless to give you gdb traces from the core dumps (when the services coredumps).. At the next locked xrootd i will post a pstacks and a link to logs... Thanks! Adrian > > Andy > > On Fri, 12 Jul 2013, Adrian Sevcenco wrote: > >> Hi! Is xrootd single threaded? When there is load on the data servers is >> see only 1 core at 100% ... >> Can i conclude that for data servers is better to have less cores with >> higher frequencies? >> >> Thank you! >> Adrian >> >> >> ######################################################################## >> 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 >> ######################################################################## 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