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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 | #!/bin/bash # SPDX-License-Identifier: GPL-2.0 # # Copyright (c) 2019 Facebook # # This program is free software; you can redistribute it and/or # modify it under the terms of version 2 of the GNU General Public # License as published by the Free Software Foundation. Usage() { echo "Script for testing HBM (Host Bandwidth Manager) framework." echo "It creates a cgroup to use for testing and load a BPF program to limit" echo "egress or ingress bandwidth. It then uses iperf3 or netperf to create" echo "loads. The output is the goodput in Mbps (unless -D was used)." echo "" echo "USAGE: $name [out] [-b=<prog>|--bpf=<prog>] [-c=<cc>|--cc=<cc>]" echo " [-D] [-d=<delay>|--delay=<delay>] [--debug] [-E] [--edt]" echo " [-f=<#flows>|--flows=<#flows>] [-h] [-i=<id>|--id=<id >]" echo " [-l] [-N] [--no_cn] [-p=<port>|--port=<port>] [-P]" echo " [-q=<qdisc>] [-R] [-s=<server>|--server=<server]" echo " [-S|--stats] -t=<time>|--time=<time>] [-w] [cubic|dctcp]" echo " Where:" echo " out egress (default)" echo " -b or --bpf BPF program filename to load and attach." echo " Default is hbm_out_kern.o for egress," echo " -c or -cc TCP congestion control (cubic or dctcp)" echo " --debug print BPF trace buffer" echo " -d or --delay add a delay in ms using netem" echo " -D In addition to the goodput in Mbps, it also outputs" echo " other detailed information. This information is" echo " test dependent (i.e. iperf3 or netperf)." echo " -E enable ECN (not required for dctcp)" echo " --edt use fq's Earliest Departure Time (requires fq)" echo " -f or --flows number of concurrent flows (default=1)" echo " -i or --id cgroup id (an integer, default is 1)" echo " -N use netperf instead of iperf3" echo " --no_cn Do not return CN notifications" echo " -l do not limit flows using loopback" echo " -h Help" echo " -p or --port iperf3 port (default is 5201)" echo " -P use an iperf3 instance for each flow" echo " -q use the specified qdisc" echo " -r or --rate rate in Mbps (default 1s 1Gbps)" echo " -R Use TCP_RR for netperf. 1st flow has req" echo " size of 10KB, rest of 1MB. Reply in all" echo " cases is 1 byte." echo " More detailed output for each flow can be found" echo " in the files netperf.<cg>.<flow>, where <cg> is the" echo " cgroup id as specified with the -i flag, and <flow>" echo " is the flow id starting at 1 and increasing by 1 for" echo " flow (as specified by -f)." echo " -s or --server hostname of netperf server. Used to create netperf" echo " test traffic between to hosts (default is within host)" echo " netserver must be running on the host." echo " -S or --stats whether to update hbm stats (default is yes)." echo " -t or --time duration of iperf3 in seconds (default=5)" echo " -w Work conserving flag. cgroup can increase its" echo " bandwidth beyond the rate limit specified" echo " while there is available bandwidth. Current" echo " implementation assumes there is only one NIC" echo " (eth0), but can be extended to support multiple" echo " NICs." echo " cubic or dctcp specify which TCP CC to use" echo " " exit } #set -x debug_flag=0 args="$@" name="$0" netem=0 cc=x dir="-o" dir_name="out" dur=5 flows=1 id=1 prog="" port=5201 rate=1000 multi_iperf=0 flow_cnt=1 use_netperf=0 rr=0 ecn=0 details=0 server="" qdisc="" flags="" do_stats=0 BPFFS=/sys/fs/bpf function config_bpffs () { if mount | grep $BPFFS > /dev/null; then echo "bpffs already mounted" else echo "bpffs not mounted. Mounting..." mount -t bpf none $BPFFS fi } function start_hbm () { rm -f hbm.out echo "./hbm $dir -n $id -r $rate -t $dur $flags $dbg $prog" > hbm.out echo " " >> hbm.out ./hbm $dir -n $id -r $rate -t $dur $flags $dbg $prog >> hbm.out 2>&1 & echo $! } processArgs () { for i in $args ; do case $i in # Support for upcomming ingress rate limiting #in) # support for upcoming ingress rate limiting # dir="-i" # dir_name="in" # ;; out) dir="-o" dir_name="out" ;; -b=*|--bpf=*) prog="${i#*=}" ;; -c=*|--cc=*) cc="${i#*=}" ;; --no_cn) flags="$flags --no_cn" ;; --debug) flags="$flags -d" debug_flag=1 ;; -d=*|--delay=*) netem="${i#*=}" ;; -D) details=1 ;; -E) ecn=1 ;; --edt) flags="$flags --edt" qdisc="fq" ;; -f=*|--flows=*) flows="${i#*=}" ;; -i=*|--id=*) id="${i#*=}" ;; -l) flags="$flags -l" ;; -N) use_netperf=1 ;; -p=*|--port=*) port="${i#*=}" ;; -P) multi_iperf=1 ;; -q=*) qdisc="${i#*=}" ;; -r=*|--rate=*) rate="${i#*=}" ;; -R) rr=1 ;; -s=*|--server=*) server="${i#*=}" ;; -S|--stats) flags="$flags -s" do_stats=1 ;; -t=*|--time=*) dur="${i#*=}" ;; -w) flags="$flags -w" ;; cubic) cc=cubic ;; dctcp) cc=dctcp ;; *) echo "Unknown arg:$i" Usage ;; esac done } processArgs config_bpffs if [ $debug_flag -eq 1 ] ; then rm -f hbm_out.log fi hbm_pid=$(start_hbm) usleep 100000 host=`hostname` cg_base_dir=/sys/fs/cgroup/unified cg_dir="$cg_base_dir/cgroup-test-work-dir/hbm$id" echo $$ >> $cg_dir/cgroup.procs ulimit -l unlimited rm -f ss.out rm -f hbm.[0-9]*.$dir_name if [ $ecn -ne 0 ] ; then sysctl -w -q -n net.ipv4.tcp_ecn=1 fi if [ $use_netperf -eq 0 ] ; then cur_cc=`sysctl -n net.ipv4.tcp_congestion_control` if [ "$cc" != "x" ] ; then sysctl -w -q -n net.ipv4.tcp_congestion_control=$cc fi fi if [ "$netem" -ne "0" ] ; then if [ "$qdisc" != "" ] ; then echo "WARNING: Ignoring -q options because -d option used" fi tc qdisc del dev lo root > /dev/null 2>&1 tc qdisc add dev lo root netem delay $netem\ms > /dev/null 2>&1 elif [ "$qdisc" != "" ] ; then tc qdisc del dev eth0 root > /dev/null 2>&1 tc qdisc add dev eth0 root $qdisc > /dev/null 2>&1 fi n=0 m=$[$dur * 5] hn="::1" if [ $use_netperf -ne 0 ] ; then if [ "$server" != "" ] ; then hn=$server fi fi ( ping6 -i 0.2 -c $m $hn > ping.out 2>&1 ) & if [ $use_netperf -ne 0 ] ; then begNetserverPid=`ps ax | grep netserver | grep --invert-match "grep" | \ awk '{ print $1 }'` if [ "$begNetserverPid" == "" ] ; then if [ "$server" == "" ] ; then ( ./netserver > /dev/null 2>&1) & usleep 100000 fi fi flow_cnt=1 if [ "$server" == "" ] ; then np_server=$host else np_server=$server fi if [ "$cc" == "x" ] ; then np_cc="" else np_cc="-K $cc,$cc" fi replySize=1 while [ $flow_cnt -le $flows ] ; do if [ $rr -ne 0 ] ; then reqSize=1M if [ $flow_cnt -eq 1 ] ; then reqSize=10K fi if [ "$dir" == "-i" ] ; then replySize=$reqSize reqSize=1 fi ( ./netperf -H $np_server -l $dur -f m -j -t TCP_RR -- -r $reqSize,$replySize $np_cc -k P50_lATENCY,P90_LATENCY,LOCAL_TRANSPORT_RETRANS,REMOTE_TRANSPORT_RETRANS,LOCAL_SEND_THROUGHPUT,LOCAL_RECV_THROUGHPUT,REQUEST_SIZE,RESPONSE_SIZE > netperf.$id.$flow_cnt ) & else if [ "$dir" == "-i" ] ; then ( ./netperf -H $np_server -l $dur -f m -j -t TCP_RR -- -r 1,10M $np_cc -k P50_LATENCY,P90_LATENCY,LOCAL_TRANSPORT_RETRANS,LOCAL_SEND_THROUGHPUT,REMOTE_TRANSPORT_RETRANS,REMOTE_SEND_THROUGHPUT,REQUEST_SIZE,RESPONSE_SIZE > netperf.$id.$flow_cnt ) & else ( ./netperf -H $np_server -l $dur -f m -j -t TCP_STREAM -- $np_cc -k P50_lATENCY,P90_LATENCY,LOCAL_TRANSPORT_RETRANS,LOCAL_SEND_THROUGHPUT,REQUEST_SIZE,RESPONSE_SIZE > netperf.$id.$flow_cnt ) & fi fi flow_cnt=$[flow_cnt+1] done # sleep for duration of test (plus some buffer) n=$[dur+2] sleep $n # force graceful termination of netperf pids=`pgrep netperf` for p in $pids ; do kill -SIGALRM $p done flow_cnt=1 rate=0 if [ $details -ne 0 ] ; then echo "" echo "Details for HBM in cgroup $id" if [ $do_stats -eq 1 ] ; then if [ -e hbm.$id.$dir_name ] ; then cat hbm.$id.$dir_name fi fi fi while [ $flow_cnt -le $flows ] ; do if [ "$dir" == "-i" ] ; then r=`cat netperf.$id.$flow_cnt | grep -o "REMOTE_SEND_THROUGHPUT=[0-9]*" | grep -o "[0-9]*"` else r=`cat netperf.$id.$flow_cnt | grep -o "LOCAL_SEND_THROUGHPUT=[0-9]*" | grep -o "[0-9]*"` fi echo "rate for flow $flow_cnt: $r" rate=$[rate+r] if [ $details -ne 0 ] ; then echo "-----" echo "Details for cgroup $id, flow $flow_cnt" cat netperf.$id.$flow_cnt fi flow_cnt=$[flow_cnt+1] done if [ $details -ne 0 ] ; then echo "" delay=`grep "avg" ping.out | grep -o "= [0-9.]*/[0-9.]*" | grep -o "[0-9.]*$"` echo "PING AVG DELAY:$delay" echo "AGGREGATE_GOODPUT:$rate" else echo $rate fi elif [ $multi_iperf -eq 0 ] ; then (iperf3 -s -p $port -1 > /dev/null 2>&1) & usleep 100000 iperf3 -c $host -p $port -i 0 -P $flows -f m -t $dur > iperf.$id rates=`grep receiver iperf.$id | grep -o "[0-9.]* Mbits" | grep -o "^[0-9]*"` rate=`echo $rates | grep -o "[0-9]*$"` if [ $details -ne 0 ] ; then echo "" echo "Details for HBM in cgroup $id" if [ $do_stats -eq 1 ] ; then if [ -e hbm.$id.$dir_name ] ; then cat hbm.$id.$dir_name fi fi delay=`grep "avg" ping.out | grep -o "= [0-9.]*/[0-9.]*" | grep -o "[0-9.]*$"` echo "PING AVG DELAY:$delay" echo "AGGREGATE_GOODPUT:$rate" else echo $rate fi else flow_cnt=1 while [ $flow_cnt -le $flows ] ; do (iperf3 -s -p $port -1 > /dev/null 2>&1) & ( iperf3 -c $host -p $port -i 0 -P 1 -f m -t $dur | grep receiver | grep -o "[0-9.]* Mbits" | grep -o "^[0-9]*" | grep -o "[0-9]*$" > iperf3.$id.$flow_cnt ) & port=$[port+1] flow_cnt=$[flow_cnt+1] done n=$[dur+1] sleep $n flow_cnt=1 rate=0 if [ $details -ne 0 ] ; then echo "" echo "Details for HBM in cgroup $id" if [ $do_stats -eq 1 ] ; then if [ -e hbm.$id.$dir_name ] ; then cat hbm.$id.$dir_name fi fi fi while [ $flow_cnt -le $flows ] ; do r=`cat iperf3.$id.$flow_cnt` # echo "rate for flow $flow_cnt: $r" if [ $details -ne 0 ] ; then echo "Rate for cgroup $id, flow $flow_cnt LOCAL_SEND_THROUGHPUT=$r" fi rate=$[rate+r] flow_cnt=$[flow_cnt+1] done if [ $details -ne 0 ] ; then delay=`grep "avg" ping.out | grep -o "= [0-9.]*/[0-9.]*" | grep -o "[0-9.]*$"` echo "PING AVG DELAY:$delay" echo "AGGREGATE_GOODPUT:$rate" else echo $rate fi fi if [ $use_netperf -eq 0 ] ; then sysctl -w -q -n net.ipv4.tcp_congestion_control=$cur_cc fi if [ $ecn -ne 0 ] ; then sysctl -w -q -n net.ipv4.tcp_ecn=0 fi if [ "$netem" -ne "0" ] ; then tc qdisc del dev lo root > /dev/null 2>&1 fi if [ "$qdisc" != "" ] ; then tc qdisc del dev eth0 root > /dev/null 2>&1 fi sleep 2 hbmPid=`ps ax | grep "hbm " | grep --invert-match "grep" | awk '{ print $1 }'` if [ "$hbmPid" == "$hbm_pid" ] ; then kill $hbm_pid fi sleep 1 # Detach any pinned BPF programs that may have lingered rm -rf $BPFFS/hbm* if [ $use_netperf -ne 0 ] ; then if [ "$server" == "" ] ; then if [ "$begNetserverPid" == "" ] ; then netserverPid=`ps ax | grep netserver | grep --invert-match "grep" | awk '{ print $1 }'` if [ "$netserverPid" != "" ] ; then kill $netserverPid fi fi fi fi exit |