From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ed1-x535.google.com (mail-ed1-x535.google.com [IPv6:2a00:1450:4864:20::535]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id E45453B29D for ; Sun, 19 Dec 2021 20:54:49 -0500 (EST) Received: by mail-ed1-x535.google.com with SMTP id o20so31981672eds.10 for ; Sun, 19 Dec 2021 17:54:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=8N6oYiW02Lwh6ikn7fQwb98Dqa9etGb63vbXSW+IIh0=; b=JnSEcvNIyk/pITH/T0mLtBkgARoJzIQKLLdQ3HteXURuIHi+lXYr9bNU5lHTvak6K4 xGN5W62tjXq131YmwvBE55Df4IGghkLUBwnW8JaWACcdKwr8ZovBcxcuSoJ9a42EwRaF D/AUfdqiNOygwALYEIPHf3aqY0/bvt/fS0a3E= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=8N6oYiW02Lwh6ikn7fQwb98Dqa9etGb63vbXSW+IIh0=; b=fxYVq1tQc0ByQOchvsvwSATceYAFFMJ1hw0FK0D/Gc4WGwdPQGimxBuEJ8ONYZF541 eQdGqSTWtNbIPdqJmHryFIUBICRvkZvnj91ZeLhw8X/mq7zHX5yKdHaHFqv8V/KELupi DjDYnRs2kxEp5aqJ6R/48lMZsWEhh8y9sSCY+EzpB6W9WeQJviSDMjwjtZncBj4C/5ss h10sIwILCYFeZoTI1KNgTTIWyOz+/s49uS6NFrCwS4Czy9wikSyBlg6+o8d7n/90rFbV tsvTLwh/zO31lqb6/p5h8Q3tYXiHFiTfmcBE6YXIjvZIst1FAP4JRrOnSr2WfhNj3UuI 55yw== X-Gm-Message-State: AOAM533WAYXXtg3liy0swT3jk6QIgFNVhsP80rX7TEOMonCcmhrJpYnC sbT9wLvjC57V9LOOUl2xmQZMFrjiwfTtCl2ij7kLGBZ3nkUg/fWgMzM23jZKhd1A2dC8UsEJgA5 958sbSrQ9fbFhzf8wDXYBV9rApL6dOIowK02vJO93RQ767jC+Qw== X-Google-Smtp-Source: ABdhPJxrdSc9H+KzYdn1Z8B9W5en6gFMsCgfHWvHAZa0iXqtKHUvAnEzkJCR7L9pO69fnDSeaQekpV8y8wU5Ufj30DQ= X-Received: by 2002:a05:6402:350a:: with SMTP id b10mr1717321edd.89.1639965288781; Sun, 19 Dec 2021 17:54:48 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Bob McMahon Date: Sun, 19 Dec 2021 17:54:37 -0800 Message-ID: To: Dave Taht Cc: Make-Wifi-fast Content-Type: multipart/alternative; boundary="0000000000007b84fe05d38a2c3b" Subject: Re: [Make-wifi-fast] Fwd: a succession of networkQuality tests X-BeenThere: make-wifi-fast@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 Dec 2021 01:54:50 -0000 --0000000000007b84fe05d38a2c3b Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable sorry, but BB8 is the bounceback histogram. The OWD is on it's own line. Also, one must build from the master branch to get this feature w/latest bug fixes (as it's early and hasn't been thoroughly tested nor released as part of an iperf 2 release.) [ 1] 0.00-10.09 sec *OWD Delays (ms) Cnt=3D472 To=3D15.290/1.068/123.623/17.616 From=3D5.498/4.806/23.336/1.342 Asymmetry=3D-9.792/-118.707/4.013/17.356* The OWDs include the to, from and asymmetry in a mean/min/max/var format. (uses Welford's algo to calculate running mean and variance.) The asymmetry is left signed (vs an absolute value) in order to preserve directional information. Bob On Sun, Dec 19, 2021 at 5:40 PM Bob McMahon wrote: > FYI, I've added a --bounceback option to iperf 2 > . One can use the BB > cnt as analogous for messages per unit time. It by default turns on > TCP_QUICKACK so one can compare the TCP RTT vs the app level bounceback (= -i > is recommended for tcpinfo sampling.) There is an option to add a full > duplex TCP stream to the same dest along with the bounceback traffic. If > you use --trip-times you'll get a histogram (BB8) of the one way delays t= oo > (clocks must be sync'ed and assumed so) > > This is designed to be a simple socket level test. Please do feel free to > comment and suggest improvements. > > [rjmcmahon@ryzen3950 iperf2-code]$ src/iperf - hidden.com --bounceback -t > 10 --trip-times -e --hide-ips > ------------------------------------------------------------ > Client connecting to (**hidden**), TCP port 5001 with pid 240864 (1 flows= ) > Write buffer size: 100 Byte > Bounce-back test (size=3D 100 Byte) (hold=3D0 usecs) > TOS set to 0x0 and nodelay (Nagle off) > TCP window size: 85.0 KByte (default) > ------------------------------------------------------------ > [ 1] local *.*.*.133%enp4s0 port 55634 connected with *.*.*.123 port 500= 1 > (MSS=3D1448) (bb len/hold=3D100/0) (trip-times) (sock=3D3) (irtt/icwnd=3D= 14469/14) > (ct=3D14.52 ms) on 2021-12-19 17:29:23 (PST) > [ ID] Interval Transfer Bandwidth *BB cnt*=3Davg/min/ma= x/stdev > Rtry Cwnd/RTT > [ 1] 0.00-10.03 sec 178 KBytes 145 Kbits/sec *911*=3D10.982/6.187= /21.876/1.883 > ms 0 14K/13160 us > [ 1] 0.00-10.03 sec OWD Delays (ms) Cnt=3D911 To=3D5.222/0.383/16.277/= 1.875 > From=3D5.760/5.500/6.091/0.092 Asymmetry=3D0.538/-10.678/5.421/1.871 > [ 1] 0.00-10.03 sec BB8(f)-PDF: > bin(w=3D100us):cnt(911)=3D62:1,79:1,97:13,98:23,99:65,100:92,101:115,102:= 135,103:85,104:70,105:43,106:30,107:17,108:15,109:11,110:6,111:3,112:4,113:= 5,114:5,115:5,116:2,117:4,118:2,119:4,120:5,121:4,122:2,123:3,124:2,125:1,1= 26:3,127:3,128:1,131:1,132:1,133:7,134:1,135:4,138:6,139:6,141:4,142:2,143:= 4,144:2,145:7,146:6,147:5,148:6,149:6,150:12,151:1,153:3,154:2,155:1,156:4,= 157:6,158:1,159:4,160:2,162:3,163:2,165:2,166:2,167:3,168:1,169:1,171:1,172= :1,177:2,179:1,183:1,187:1,188:1,191:2,197:1,208:1,219:1 > (5.00/95.00/99.7%=3D99/154/197,Outliers=3D0,obl/obu=3D0/0) (0.000 ms/0.0) > > > > [rjmcmahon@ryzen3950 iperf2-code]$ src/iperf -c hidden.com --bounceback > -t 10 --trip-times -e --hide-ips -*-bounceback-congest* > [ 2] local *.*.*.133 port 55640 connected with *.*.*.123 port 5001 > (full-duplex) (trip-times) > [ 1] local *.*.*.133%enp4s0 port 55642 connected with *.*.*.123 port 500= 1 > (MSS=3D1448) (bb len/hold=3D100/0) (trip-times) (sock=3D3) (irtt/icwnd=3D= 10580/14) > (ct=3D10.67 ms) on 2021-12-19 17:29:48 (PST) > ------------------------------------------------------------ > Client connecting to (**hidden**), TCP port 5001 with pid 240911 (1 flows= ) > Write buffer size: 100 Byte > Bounce-back test (size=3D 100 Byte) (hold=3D0 usecs) > TOS set to 0x0 and nodelay (Nagle off) > TCP window size: 85.0 KByte (default) > ------------------------------------------------------------ > [ ID] Interval Transfer Bandwidth > [ 2] 0.00-10.02 sec 7.82 MBytes 6.55 Mbits/sec > [ ID] Interval Transfer Bandwidth BB > cnt=3Davg/min/max/stdev Rtry Cwnd/RTT > [ 1] 0.00-10.09 sec 92.2 KBytes 74.9 Kbits/sec *472*=3D20.788/6.149= /128.539/17.973 > ms 1 14K/42283 us > [ 1] 0.00-10.09 sec OWD Delays (ms) Cnt=3D472 > To=3D15.290/1.068/123.623/17.616 From=3D5.498/4.806/23.336/1.342 > Asymmetry=3D-9.792/-118.707/4.013/17.356 > [ 1] 0.00-10.09 sec BB8(f)-PDF: > bin(w=3D100us):cnt(472)=3D62:1,82:1,91:1,94:5,95:1,96:5,97:6,98:6,99:3,10= 0:6,101:4,102:4,103:3,104:3,105:7,106:6,107:4,108:6,109:2,110:5,111:5,112:2= ,113:3,114:3,115:4,116:3,117:4,118:1,119:3,120:4,121:3,122:3,123:1,124:2,12= 6:2,127:2,128:1,129:3,132:3,133:1,135:2,136:2,137:5,138:1,139:3,140:8,141:8= ,142:8,143:9,144:12,145:10,146:14,147:6,148:7,149:4,150:6,151:7,152:3,153:5= ,154:5,155:4,156:2,157:6,158:8,159:2,160:6,161:11,162:3,163:2,164:6,165:2,1= 66:5,167:3,168:2,169:2,170:7,171:6,172:1,174:2,175:3,176:1,177:1,178:1,179:= 2,180:1,181:1,182:1,183:3,184:2,186:1,187:3,189:2,190:1,193:2,194:1,195:1,1= 96:2,197:1,199:2,200:2,201:1,202:1,204:4,206:3,208:1,209:1,213:1,216:1,218:= 1,219:1,220:1,221:1,225:1,226:1,228:1,240:1,248:1,252:1,259:1,262:1,269:1,2= 75:1,276:1,279:1,281:2,282:1,283:1,290:1,291:2,293:2,295:1,297:1,298:1,301:= 1,304:1,313:1,317:1,319:1,325:1,327:1,330:1,344:1,359:1,360:1,365:1,372:1,3= 75:1,396:1,406:1,412:1,433:1,440:1,442:1,469:1,480:2,485:1,515:1,521:1,533:= 1,535:1,536:1,543:1,544:1,547:1,559:1,571:1,597:1,600:1,604:1,608:1,663:1,6= 68:1,689:1,735:1,750:1,784:1,810:1,818:1,832:1,840:1,847:1,850:1,884:1,892:= 1,897:1,924:1,997:1,1010:1,1039:1,1046:1,1177:1,1286:1 > (5.00/95.00/99.7%=3D98/604/1177,Outliers=3D2,obl/obu=3D0/0) (0.000 ms/0.0= ) > [ ID] Interval Transfer Bandwidth Burst Latency > avg/min/max/stdev (cnt/size) inP NetPwr Reads=3DDist > [ *2] 0.00-10.40 sec 149 MBytes 120 Mbits/sec > 243.512/21.708/616.257/106.136 ms (1190/131072) 3.48 MByte 61.58 > 1567094=3D900:2894:3359:2773:1327:1282:1624:1760 > [SUM] 0.00-10.41 sec 157 MBytes 126 Mbits/sec > > > CLIENT SPECIFIC OPTIONS*-b*, *--bandwidth* *n*[kmgKMG][,*n*[kmgKMG]] | *n= * > [kmgKMG]ppsset target bandwidth to *n* bits/sec (default 1 Mbit/sec) or > *n* packets per sec. This may be used with TCP or UDP. Optionally, for > variable loads, use format of mean,standard deviation*--bounceback*run a > tcp bounceback test (set size with -l or --len, defaults to 100 bytes) > *--bounceback-congest*request a concurrent full-duplex TCP stream > *--bounceback-hold **n*request the server to insert a delay of n > milliseconds between its read and write (default is no delay) > *--bounceback-period **n*request the client schedule a send every n > milliseconds (w/o option bouncebacks are immediately scheduled. With > command option and no optional value given, the interval will be one > second.)*--bounceback-no-quickack*request the server not set the > TCP_QUICKACK socket option (disabling TCP ACK delays) during a bounceback > test (see NOTES)*--burst-period **n* > Bob > --=20 This electronic communication and the information and any files transmitted= =20 with it, or attached to it, are confidential and are intended solely for=20 the use of the individual or entity to whom it is addressed and may contain= =20 information that is confidential, legally privileged, protected by privacy= =20 laws, or otherwise restricted from disclosure to anyone else. If you are=20 not the intended recipient or the person responsible for delivering the=20 e-mail to the intended recipient, you are hereby notified that any use,=20 copying, distributing, dissemination, forwarding, printing, or copying of= =20 this e-mail is strictly prohibited. If you received this e-mail in error,= =20 please return the e-mail to the sender, delete it from your computer, and= =20 destroy any printed copy of it. --0000000000007b84fe05d38a2c3b Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
sorry, but BB8 is the bounceback histogram.=C2=A0 The OWD = is on it's own line. Also, one must build from the master branch to get= this feature w/latest bug fixes (as it's early and hasn't been tho= roughly tested nor released as part of an iperf 2 release.)

[ = =C2=A01] 0.00-10.09 sec =C2=A0OWD Delays (ms) Cnt=3D472 =C2=A0To=3D15.29= 0/1.068/123.623/17.616 From=3D5.498/4.806/23.336/1.342 Asymmetry=3D-9.792/-= 118.707/4.013/17.356

The OWDs include the to, from and asymmetry= in a mean/min/max/var format. (uses Welford's algo to calculate running me= an and variance.) The asymmetry=C2=A0is left signed (vs an absolute value) = in order to preserve directional information.

Bob

On Sun, Dec 19, 2021 at 5:40 PM = Bob McMahon <bob.mcmahon@bro= adcom.com> wrote:
FYI, I've added a --bounceback option t= o iperf 2.=C2=A0 One can use the BB cnt as analogous for messages per u= nit time. It by default turns on TCP_QUICKACK so one can compare the TCP RT= T vs the app level bounceback (-i is recommended for tcpinfo sampling.) The= re is an option to add a full duplex=C2=A0TCP stream to the same dest along= with=C2=A0the bounceback traffic.=C2=A0 If you use --trip-times you'll= get a histogram (BB8) of the one way delays too (clocks must be sync'e= d=C2=A0and assumed=C2=A0so)

This is designed to be a simple socket l= evel test. Please do feel free to comment and suggest improvements.

=
[rjmc= mahon@ryzen3950 iperf2-code]$ src/iperf - hidden.com --bounceback -t 10 --trip-times -e --hide-ips=
------------------------------------------------------------
Client = connecting to (**hidden**), TCP port 5001 with pid 240864 (1 flows)
Writ= e buffer size: =C2=A0100 Byte
Bounce-back test (size=3D 100 Byte) (hold= =3D0 usecs)
TOS set to 0x0 and nodelay (Nagle off)
TCP window size: 8= 5.0 KByte (default)
----------------------------------------------------= --------
[ =C2=A01] local *.*.*.133%enp4s0 port 55634 connected with *.*= .*.123 port 5001 (MSS=3D1448) (bb len/hold=3D100/0) (trip-times) (sock=3D3)= (irtt/icwnd=3D14469/14) (ct=3D14.52 ms) on 2021-12-19 17:29:23 (PST)
[ = ID] Interval =C2=A0 =C2=A0 =C2=A0 =C2=A0Transfer =C2=A0 =C2=A0Bandwidth =C2= =A0 =C2=A0 =C2=A0 =C2=A0 BB cnt=3Davg/min/max/stdev =C2=A0 =C2=A0 = =C2=A0 =C2=A0 Rtry =C2=A0Cwnd/RTT
[ =C2=A01] 0.00-10.03 sec =C2=A0 178 K= Bytes =C2=A0 145 Kbits/sec =C2=A0 =C2=A0911=3D10.982/6.187/21.876/1.= 883 ms =C2=A0 =C2=A00 =C2=A0 14K/13160 us
[ =C2=A01] 0.00-10.03 sec =C2= =A0OWD Delays (ms) Cnt=3D911 =C2=A0To=3D5.222/0.383/16.277/1.875 From=3D5.7= 60/5.500/6.091/0.092 Asymmetry=3D0.538/-10.678/5.421/1.871
[ =C2=A01] 0.= 00-10.03 sec BB8(f)-PDF: bin(w=3D100us):cnt(911)=3D62:1,79:1,97:13,98:23,99= :65,100:92,101:115,102:135,103:85,104:70,105:43,106:30,107:17,108:15,109:11= ,110:6,111:3,112:4,113:5,114:5,115:5,116:2,117:4,118:2,119:4,120:5,121:4,12= 2:2,123:3,124:2,125:1,126:3,127:3,128:1,131:1,132:1,133:7,134:1,135:4,138:6= ,139:6,141:4,142:2,143:4,144:2,145:7,146:6,147:5,148:6,149:6,150:12,151:1,1= 53:3,154:2,155:1,156:4,157:6,158:1,159:4,160:2,162:3,163:2,165:2,166:2,167:= 3,168:1,169:1,171:1,172:1,177:2,179:1,183:1,187:1,188:1,191:2,197:1,208:1,2= 19:1 (5.00/95.00/99.7%=3D99/154/197,Outliers=3D0,obl/obu=3D0/0) (0.000 ms/0= .0)


[rjmcmahon@ryzen3950 iperf2-code]$ src/iperf -c hidden.com --bounceback -t 10 = --trip-times -e --hide-ips --bounceback-congest
[ =C2=A02] local = *.*.*.133 port 55640 connected with *.*.*.123 port 5001 (full-duplex) (trip= -times)
[ =C2=A01] local *.*.*.133%enp4s0 port 55642 connected with *.*.= *.123 port 5001 (MSS=3D1448) (bb len/hold=3D100/0) (trip-times) (sock=3D3) = (irtt/icwnd=3D10580/14) (ct=3D10.67 ms) on 2021-12-19 17:29:48 (PST)
---= ---------------------------------------------------------
Client connect= ing to (**hidden**), TCP port 5001 with pid 240911 (1 flows)
Write buffe= r size: =C2=A0100 Byte
Bounce-back test (size=3D 100 Byte) (hold=3D0 use= cs)
TOS set to 0x0 and nodelay (Nagle off)
TCP window size: 85.0 KByt= e (default)
------------------------------------------------------------=
[ ID] Interval =C2=A0 =C2=A0 =C2=A0 Transfer =C2=A0 =C2=A0 Bandwidth[ =C2=A02] 0.00-10.02 sec =C2=A07.82 MBytes =C2=A06.55 Mbits/sec
[ ID] = Interval =C2=A0 =C2=A0 =C2=A0 =C2=A0Transfer =C2=A0 =C2=A0Bandwidth =C2=A0 = =C2=A0 =C2=A0 =C2=A0 BB cnt=3Davg/min/max/stdev =C2=A0 =C2=A0 =C2=A0 =C2=A0= Rtry =C2=A0Cwnd/RTT
[ =C2=A01] 0.00-10.09 sec =C2=A092.2 KBytes =C2=A07= 4.9 Kbits/sec =C2=A0 =C2=A0472=3D20.788/6.149/128.539/17.973 ms =C2= =A0 =C2=A01 =C2=A0 14K/42283 us
[ =C2=A01] 0.00-10.09 sec =C2=A0OWD Dela= ys (ms) Cnt=3D472 =C2=A0To=3D15.290/1.068/123.623/17.616 From=3D5.498/4.806= /23.336/1.342 Asymmetry=3D-9.792/-118.707/4.013/17.356
[ =C2=A01] 0.00-1= 0.09 sec BB8(f)-PDF: bin(w=3D100us):cnt(472)=3D62:1,82:1,91:1,94:5,95:1,96:= 5,97:6,98:6,99:3,100:6,101:4,102:4,103:3,104:3,105:7,106:6,107:4,108:6,109:= 2,110:5,111:5,112:2,113:3,114:3,115:4,116:3,117:4,118:1,119:3,120:4,121:3,1= 22:3,123:1,124:2,126:2,127:2,128:1,129:3,132:3,133:1,135:2,136:2,137:5,138:= 1,139:3,140:8,141:8,142:8,143:9,144:12,145:10,146:14,147:6,148:7,149:4,150:= 6,151:7,152:3,153:5,154:5,155:4,156:2,157:6,158:8,159:2,160:6,161:11,162:3,= 163:2,164:6,165:2,166:5,167:3,168:2,169:2,170:7,171:6,172:1,174:2,175:3,176= :1,177:1,178:1,179:2,180:1,181:1,182:1,183:3,184:2,186:1,187:3,189:2,190:1,= 193:2,194:1,195:1,196:2,197:1,199:2,200:2,201:1,202:1,204:4,206:3,208:1,209= :1,213:1,216:1,218:1,219:1,220:1,221:1,225:1,226:1,228:1,240:1,248:1,252:1,= 259:1,262:1,269:1,275:1,276:1,279:1,281:2,282:1,283:1,290:1,291:2,293:2,295= :1,297:1,298:1,301:1,304:1,313:1,317:1,319:1,325:1,327:1,330:1,344:1,359:1,= 360:1,365:1,372:1,375:1,396:1,406:1,412:1,433:1,440:1,442:1,469:1,480:2,485= :1,515:1,521:1,533:1,535:1,536:1,543:1,544:1,547:1,559:1,571:1,597:1,600:1,= 604:1,608:1,663:1,668:1,689:1,735:1,750:1,784:1,810:1,818:1,832:1,840:1,847= :1,850:1,884:1,892:1,897:1,924:1,997:1,1010:1,1039:1,1046:1,1177:1,1286:1 (= 5.00/95.00/99.7%=3D98/604/1177,Outliers=3D2,obl/obu=3D0/0) (0.000 ms/0.0)[ ID] Interval =C2=A0 =C2=A0 =C2=A0 =C2=A0Transfer =C2=A0 =C2=A0Bandwidth= =C2=A0 =C2=A0Burst Latency avg/min/max/stdev (cnt/size) inP NetPwr =C2=A0R= eads=3DDist
[ *2] 0.00-10.40 sec =C2=A0 149 MBytes =C2=A0 120 Mbits/sec = =C2=A0243.512/21.708/616.257/106.136 ms (1190/131072) 3.48 MByte 61.58 =C2= =A01567094=3D900:2894:3359:2773:1327:1282:1624:1760
[SUM] 0.00-10.41 sec= =C2=A0 157 MBytes =C2=A0 126 Mbits/sec

CLIENT SPECIFIC OPTIONS=

-b,=C2=A0--bandwidth=C2=A0n<= /i>[kmgKMG][,n[kmgKMG]] |=C2=A0n[kmgKMG]pps
set targe= t bandwidth to=C2=A0n=C2=A0bits/sec (default 1 Mbit/sec) or=C2=A0= n=C2=A0packets per sec. This may be used with TCP or UDP. Optionally, f= or variable loads, use format of mean,standard deviation
--bounc= eback
run a tcp bounceback test (set size with -l or --len, def= aults to 100 bytes)
--bounceback-congest
request a c= oncurrent full-duplex TCP stream
--bounceback-hold=C2=A0n=
request the server to insert a delay of n milliseconds between= its read and write (default is no delay)
--bounceback-period=C2= =A0n
request the client schedule a send every n millisec= onds (w/o option bouncebacks are immediately scheduled. With command option= and no optional value given, the interval will be one second.)
= --bounceback-no-quickack
request the server not set the TCP_QUI= CKACK socket option (disabling TCP ACK delays) during a bounceback test (se= e NOTES)
--burst-period=C2=A0n

Bob

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