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I also want to point out that 3.3.6 was a bit strict in enforcing the stated limit (gees, I wish we never let people specify the maxt option). The latest version of xrootd tries to adhere to the nproc limit rather to the (perhaps) lower limit. In any case, should you find an xrootd server dead out of the water because you see "thread limit reached" message we really want to get a core file of that. We have an open ticket on this and, so far, it appears to be a bug in the glibc threading package but we want to make sure of that. So, please, when you see that get a gcore of the server (and give us access to it) before restarting! Andy The ticket is: https://github.com/xrootd/xrootd/issues/137 On Fri, 13 Feb 2015, Yang, Wei wrote: > 4096 is actually not very high in practice use. 8192 or 16k is better. also don?t forget to raise the ?nproc? limit in /etc/security/limit.d > > Wei Yang | [log in to unmask] | 650-926-3338(O) > > > > On Feb 12, 2015, at 11:08 PM, Tommaso Boccali <[log in to unmask]> wrote: > >> Ciao, today I found the Pisa xrootd servers completely stuck (3.3.6 still), with load > 4000. >> trying to debug, I saw upon restart a >> >> 150213 08:01:53 1618 XrdScheduler: Unable to create worker thread; resource temporarily unavailable >> >> in cmsd.log >> >> in the xrootd.cfg I have a >> >> xrd.sched maxt 4096 >> >> whch i would assume is already high .. So question is: on a live system, how can I see the # of threads xrootd/cmsd is trying to open? >> >> thanks a lot >> >> 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 >> > > ######################################################################## > 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