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Hi, 1024 is nothing for a serious server. I never found any good reason to limit it. Just to give an example, all the 60-70 ALICE sites use 65500, and that problem never appears. Fabrizio Patrick McGuigan ha scritto: > Hi, > > I am having an issue with one of our data servers and it may be getting > overloaded with requests from clients. > > The symptoms are that the load on the SRM machine will get very large > because threads there are talking through XrootdFS for various > connections to the dataserver. Various activities related to Xrootd > will fail (SRM get's hung, gridftp servers won't send data). > > When logged into the dataserver and running strace on the xrootd service > I see that it has a problem in accept() because of too many open files. > > If I do a netstat I see that xrootd is holding a large number of sockets > in a CLOSE_WAIT state. > > I am trying to understand if the problems that I am seeing are because > the limits (1024 open FD's) given to xrootd are too small or if the > problem with xrootd is that the service is too overloaded and this is > causing xrootd to hang on to too many sockets. > > Regards, > > Patrick > > >