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Hi Wilko, I see. Please, can you rerun the test setting to 1 the debuglvl of xrdcp ? Then I need you to point me to corefile (and the log of course). Fabrizio Wilko Kroeger wrote: > > Hello Fabrizio > > I am running 20 xrdcp clients against a single xrootd server. > The command is: > xrdcp root://oprserv04:2094////prod/testFiles/dummyFile_15.df - | wc -c > The xrootd version was build from the head yesterday morning. > > Every few hours I get a core which shows the following: > > (gdb) where > #0 0x0095517c in memcpy () from /lib/tls/libc.so.6 > #1 0x0806e96c in XrdClientReadCacheItem::GetPartialInterval(void const*, long > long, long long) ( > this=0x991d708, buffer=0xb5316408, begin_offs=10240000, end_offs=10399999) > at XrdClientReadCache.hh:93 > #2 0x0806dd2c in XrdClientReadCache::GetDataIfPresent(void const*, long > long, long long, bool) ( > this=0x991d278, buffer=0xb527a008, begin_offs=9600000, > end_offs=10399999, PerfCalc=false) > at XrdClientReadCache.cc:156 > #3 0x08065659 in XrdClientConn::GetDataFromCache(void const*, long long, > long long, bool) (this=0x991bae8, > buffer=0xb527a008, begin_offs=9600000, end_offs=10399999, > PerfCalc=false) at XrdClientConn.cc:1665 > #4 0x080598c8 in XrdClient::Read(void*, long long, int) (this=0x991ab70, > buf=0xb527a008, offset=9600000,len=800000) at XrdClient.cc:289 > #5 0x08053cfe in ReaderThread_xrd(void*) () at Xrdcp.cc:64 > #6 0x0807fd0e in XrdOucThread_Xeq (myargs=0x991e428) at XrdOucPthread.cc:80 > #7 0x0040adec in start_thread () from /lib/tls/libpthread.so.0 > #8 0x009b7a2a in clone () from /lib/tls/libc.so.6 > (gdb) quit > > > Unfortunately I don't have the xrdlog file and can't tell you if something > happened on the server side, but I can repeat the test. > Any idea? > > Cheers, > Wilko