Hello Chris, everybody: I am not using jumbo frames, and I'm now considering this option, but first I wanted to know for sure that there is no other problem before, just to control the number of variables at hand. But thanks for your help.
I did a strace on the hanged process, and the output is this: ______________________________________________ mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x401 76000 read(4, "#\n# hosts This file desc"..., 4096) = 4096 read(4, "yriBlade077\n192.168.30.178 myri"..., 4096) = 4096 read(4, " blade067 blade067.lcca.usp.br\n1"..., 4096) = 2055 read(4, "", 4096) = 0 close(4) = 0 munmap(0x40176000, 4096) = 0 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, chil d_tidptr=0x40046f68) = 25994 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, chil d_tidptr=0x40046f68) = 25995 brk(0x102ab000) = 0x102ab000 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, chil d_tidptr=0x40046f68) = 25996 waitpid(-1, 0xffffdbc8, 0) = ? ERESTARTSYS (To be restarted) --- SIGWINCH (Window changed) @ 0 (0) --- waitpid(-1, 0xffffdbc8, 0) = ? ERESTARTSYS (To be restarted) --- SIGWINCH (Window changed) @ 0 (0) --- waitpid(-1, 0xffffdbc8, 0) = ? ERESTARTSYS (To be restarted) --- SIGWINCH (Window changed) @ 0 (0) --- waitpid(-1, 0xffffdbc8, 0) = ? ERESTARTSYS (To be restarted) --- SIGWINCH (Window changed) @ 0 (0) --- waitpid(-1, 0xffffdbc8, 0) = ? ERESTARTSYS (To be restarted) --- SIGWINCH (Window changed) @ 0 (0) --- waitpid(-1, 0xffffdbc8, 0) = ? ERESTARTSYS (To be restarted) --- SIGWINCH (Window changed) @ 0 (0) --- waitpid(-1, 0xffffdbc8, 0) = ? ERESTARTSYS (To be restarted) --- SIGWINCH (Window changed) @ 0 (0) --- waitpid(-1, 0xffffdbc8, 0) = ? ERESTARTSYS (To be restarted) --- SIGWINCH (Window changed) @ 0 (0) --- waitpid(-1, 0xffffdbc8, 0) = ? ERESTARTSYS (To be restarted) --- SIGWINCH (Window changed) @ 0 (0) --- waitpid(-1, 0xffffdbc8, 0) = ? ERESTARTSYS (To be restarted) --- SIGWINCH (Window changed) @ 0 (0) --- waitpid(-1, 0xffffdbc8, 0) = ? ERESTARTSYS (To be restarted) --- SIGWINCH (Window changed) @ 0 (0) --- waitpid(-1, 0xffffdbc8, 0) = ? ERESTARTSYS (To be restarted) --- SIGWINCH (Window changed) @ 0 (0) --- waitpid(-1, 0xffffdbc8, 0) = ? ERESTARTSYS (To be restarted) --- SIGWINCH (Window changed) @ 0 (0) --- waitpid(-1, 0xffffdbc8, 0) = ? ERESTARTSYS (To be restarted) --- SIGWINCH (Window changed) @ 0 (0) --- waitpid(-1, 0xffffdbc8, 0) = ? ERESTARTSYS (To be restarted) --- SIGWINCH (Window changed) @ 0 (0) --- waitpid(-1, ______________________________________________ and just that. I'm now trying to make a better undestanding that what is happening. Thank you. Ivan 2007/9/29, Chris Samuel <[EMAIL PROTECTED]>: > On Sat, 29 Sep 2007, Ivan Paganini wrote: > > > I sniffed the network in the store nodes interface, and i got lots > > of TCP lost fragment, previos lost fragments, ack lost fragments > > and TCP window size full. > > Some suggestions would be to check that all network interfaces are > negotiating gigabit back to the switch, and that if you are using > jumbo frames then all interfaces are indeed using jumbo frames. > > A useful check to verify 2 way jumbo frames connectivity is by using > the ping command, doing: > > ping -c 1 -M do -s 8900 $hostname > > should tell you whether or not it is working. > > Best of luck! > Chris > -- > Christopher Samuel - (03) 9925 4751 - Systems Manager > The Victorian Partnership for Advanced Computing > P.O. Box 201, Carlton South, VIC 3053, Australia > VPAC is a not-for-profit Registered Research Agency > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf > -- ----------------------------------------------------------- Ivan S. P. Marin ---------------------------------------------------------- _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
