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Date: Thu, 04 Jun 2009 23:16:16 +0530 From: Jaswinder Singh Rajput <jaswinder@...nel.org> To: Steven Rostedt <rostedt@...dmis.org> Cc: Philipp Reh <sefi@...-f-i.de>, LKML <linux-kernel@...r.kernel.org>, netdev <netdev@...r.kernel.org> Subject: Re: When does Linux drop UDP packets? On Thu, 2009-06-04 at 12:34 -0400, Steven Rostedt wrote: > BTW, I used ftrace to look into this: > > Enable: > > CONFIG_FTRACE > CONFIG_FUNCTION_TRACER > CONFIG_FUNCITON_GRAPH_TRACER > CONFIG_DYNAMIC_FTRACE > > Compile and boot: > > # mount -t debugfs nodev /sys/kernel/debug Very glad to see you following standards ;-) > # cd /sys/kernel/debug hmm you mean # cd /sys/kernel/debug/tracing > # echo udp_rcv > set_graph_function > # echo function_graph > current_tracer > # cat trace > Anyway you can also see UDP packet drops when you increase network and CPU load. -- JSR -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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