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- 2024.04.01 作成
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ネットワークの帯域を計測する便利なツール
※iperfはUDPでは1Gbitとか大きな帯域だと、想定通りの数値が出ない tcpでbandwidthを指定せず実行すると想定内の数値が出ます。
RPMforgeリポジトリ を追加してからyumでインストール
# yum install iperf
# iperf -s -p 8080 -i 1
# iperf -c 192.168.10.10 -p 8080 -i 1
# iperf -s -p 8080 -u -i 1
# iperf -c 192.168.10.10 -p 8080 -u -b 200M -i 1
# iperf --help Usage: iperf [-s|-c host] [options] iperf [-h|--help] [-v|--version] Client/Server: -f, --format [kmKM] format to report: Kbits, Mbits, KBytes, MBytes -i, --interval # seconds between periodic bandwidth reports -l, --len #[KM] length of buffer to read or write (default 8 KB) -m, --print_mss print TCP maximum segment size (MTU - TCP/IP header) -o, --output <filename> output the report or error message to this specified file -p, --port # server port to listen on/connect to -u, --udp use UDP rather than TCP -w, --window #[KM] TCP window size (socket buffer size) -B, --bind <host> bind to <host>, an interface or multicast address -C, --compatibility for use with older versions does not sent extra msgs -M, --mss # set TCP maximum segment size (MTU - 40 bytes) -N, --nodelay set TCP no delay, disabling Nagle's Algorithm -V, --IPv6Version Set the domain to IPv6 Server specific: -s, --server run in server mode -U, --single_udp run in single threaded UDP mode -D, --daemon run the server as a daemon Client specific: -b, --bandwidth #[KM] for UDP, bandwidth to send at in bits/sec (default 1 Mbit/sec, implies -u) -c, --client <host> run in client mode, connecting to <host> -d, --dualtest Do a bidirectional test simultaneously -n, --num #[KM] number of bytes to transmit (instead of -t) -r, --tradeoff Do a bidirectional test individually -t, --time # time in seconds to transmit for (default 10 secs) -F, --fileinput <name> input the data to be transmitted from a file -I, --stdin input the data to be transmitted from stdin -L, --listenport # port to recieve bidirectional tests back on -P, --parallel # number of parallel client threads to run -T, --ttl # time-to-live, for multicast (default 1) -Z, --linux-congestion <algo> set TCP congestion control algorithm (Linux only) Miscellaneous: -x, --reportexclude [CDMSV] exclude C(connection) D(data) M(multicast) S(settings) V(server) reports -y, --reportstyle C report as a Comma-Separated Values -h, --help print this message and quit -v, --version print version information and quit
LVSの場合
ipvsadm -A -u [ロードバランスIP]:8080 -s wrr ipvsadm -a -u [ロードバランスIP]:53 -r 10.10.0.10
ロードバランスと、10.10.0.10で帯域を測ってみる