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mysqld overloading cpu of VPS
Post 302528294 by rizwan65 on Monday 6th of June 2011 11:30:08 PM
06-07-2011
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LEARN ABOUT DEBIAN
trafgen
trafgen(8) netsniff-ng-toolkit trafgen(8) NAME
trafgen - a high-performance zero-copy network packet generator SYNOPSIS
trafgen [-d|--dev <netdev>][-c|--conf <file>][-J|--jumbo-support] [-x|--interactive][-n|--num <uint>][-r|--rand][-t|--gap <usec>] [-S|--ring-size <size>][-k|--kernel-pull <usec>][-b|--bind-cpu <cpu>] [-B|--unbind-cpu <cpu>][-H|--prio-high][-Q|--notouch-irq][-v|--version] [-h|--help] DESCRIPTION
A high-performance network traffic generator that uses the zero-copy TX_RING for network I/O. For instance, on comodity Gigabit hardware up to 1,488,095 pps 64 Byte pps have been achieved with trafgen. OPTIONS
trafgen --dev eth0 --conf trafgen.txf --bind-cpu 0 Use packet configuration trafgen.txf, eth0 as transmission device and CPU0 for binding the process. OPTIONS
-h|--help Print help text and lists all options. -v|--version Print version. -d|--dev <netdev> Device for transmission i.e., eth0. -c|--conf <conf> Path to packet configuration file. -x|--interactive Start trafgen in interactive mode. -J|--jumbo-support Support for 64KB Super Jumbo Frames -n|--num <uint> Number of packets to generate before exiting. 0 means forever until SIGINT. -r|--rand Randomize packet selection process instead of round-robin. -t|--gap <uint> Interpacket gap in microseconds. -S|--ring-size <size> Manually set ring size to <size>: mmap space in KB/MB/GB. -k|--kernel-pull <uint> Kernel pull from user interval in microseconds. Default value is 10 microseconds. -b|--bind-cpu <cpu> Bind to specific CPU (or CPU-range). -B|--unbind-cpu <cpu> Forbid to use specific CPU (or CPU-range). -H|--prio-high Make this high priority process. -Q|--notouch-irq Do not touch IRQ CPU affinity of NIC. EXAMPLES
Generate traffic defined in trafgen.txf on eth0 using CPU 0 trafgen --dev eth0 --conf trafgen.txf --bind-cpu 0 Generate traffic on eth0 using CPU 0, wait 100 us between packets trafgen --dev eth0 --conf trafgen.txf --bind-cpu 0 --gap 100 Generate 100,000 packet on eth0 using CPU 0 trafgen --dev eth0 --conf trafgen.txf --bind-cpu 0 --num 100000 AUTHOR
Written by Daniel Borkmann <daniel@netsniff-ng.org> DOCUMENTATION
Documentation by Emmanuel Roullit <emmanuel@netsniff-ng.org> BUGS
Please report bugs to <bugs@netsniff-ng.org> 2012-06-29 trafgen(8)