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Message-ID: <dad9030c7a57d93220503ef4411af89b@rjmcmahon.com>
Date: Thu, 11 Apr 2024 13:28:57 -0700
From: rjmcmahon <rjmcmahon@...cmahon.com>
To: netdev@...r.kernel.org
Subject: iperf 2.2.0 release
Hi All,
iperf 2.2.0 has been released. Lots of features & bug fixes and
hopefully on a few regressions. Big focus around latency and buffer
depths, .e.g support for inflight on the client and in progress (per
Little's Law) on the server.
See sourceforge for the README and more:
https://sourceforge.net/projects/iperf2/
Man page is here: https://iperf2.sourceforge.io/iperf-manpage.html
Example use over a Wi-Fi link with -e (or --enhanced) & --trip-times
follows. Note: Clock sync needs to be done ahead of using --trip-times,
e.g. with pulse per second or PTP (IEEE-1588).
Feel free to email me with any issues or comments.
[root@...l1fc35 iperf-2.2.0]# iperf -c 192.168.1.232 -i 1 -e
--trip-times
------------------------------------------------------------
Client connecting to 192.168.1.232, TCP port 5001 with pid 2808134 (1/0
flows/load)
Write buffer size: 131072 Byte
TCP congestion control using reno
TOS defaults to 0x0 (dscp=0,ecn=0) (Nagle on)
TCP window size: 16.0 KByte (default)
Event based writes (pending queue watermark at 16384 bytes)
------------------------------------------------------------
[ 1] local 192.168.1.15%enp2s0 port 44778 connected with 192.168.1.232
port 5001 (prefetch=16384) (trip-times) (sock=3)
(icwnd/mss/irtt=14/1448/6300) (ct=6.37 ms) on 2024-04-11 11:47:11.432
(PDT)
[ ID] Interval Transfer Bandwidth Write/Err Rtry
InF(pkts)/Cwnd(pkts)/RTT(var) NetPwr
[ 1] 0.00-1.00 sec 197 MBytes 1.65 Gbits/sec 1574/0 0
658K(466)/5664K(4006)/7632(1329) us 27032
[ 1] 1.00-2.00 sec 209 MBytes 1.76 Gbits/sec 1674/0 0
702K(497)/5664K(4006)/7907(2023) us 27749
[ 1] 2.00-3.00 sec 208 MBytes 1.74 Gbits/sec 1663/0 0
1924K(1361)/5664K(4006)/7689(1454) us 28349
[ 1] 3.00-4.00 sec 204 MBytes 1.71 Gbits/sec 1630/0 0
767K(543)/5664K(4006)/9323(3084) us 22916
[ 1] 4.00-5.00 sec 209 MBytes 1.75 Gbits/sec 1672/0 0
2306K(1631)/5664K(4006)/7586(1930) us 28889
[ 1] 5.00-6.00 sec 203 MBytes 1.71 Gbits/sec 1627/0 0
644K(456)/5664K(4006)/7498(2578) us 28441
[ 1] 6.00-7.00 sec 205 MBytes 1.72 Gbits/sec 1639/0 0
453K(321)/5664K(4006)/8996(1837) us 23880
[ 1] 7.00-8.00 sec 205 MBytes 1.72 Gbits/sec 1642/0 0
1214K(859)/5664K(4006)/9549(2058) us 22539
[ 1] 8.00-9.00 sec 206 MBytes 1.72 Gbits/sec 1645/0 0
554K(392)/5664K(4006)/7606(1142) us 28348
[ 1] 9.00-10.00 sec 208 MBytes 1.74 Gbits/sec 1663/0 0
390K(276)/5664K(4006)/9105(484) us 23940
[ 1] 0.00-10.02 sec 2.01 GBytes 1.72 Gbits/sec 16430/0 0
0K(0)/5664K(4006)/10840(3545) us 19825
[root@...ora iperf-2.2.0]# iperf -s -i 1 -e -B 192.168.1.232%eth1
------------------------------------------------------------
Server listening on TCP port 5001 with pid 1012228
Binding to local address 192.168.1.232 and iface eth1
Read buffer size: 128 KByte (Dist bin width=16.0 KByte)
TCP congestion control default reno
TCP window size: 128 KByte (default)
------------------------------------------------------------
[ 1] local 192.168.1.232%eth1 port 5001 connected with 192.168.1.15
port 44778 (trip-times) (sock=4) (peer 2.2.0)
(icwnd/mss/irtt=14/1448/6008) on 2024-04-11 11:47:11.443 (PDT)
[ ID] Interval Transfer Bandwidth Burst Latency
avg/min/max/stdev (cnt/size) inP NetPwr Reads=Dist
[ 1] 0.00-1.00 sec 196 MBytes 1.65 Gbits/sec
5.943/1.431/23.584/2.449 ms (1571/131125) 1.18 MByte 34661
3190=741:212:241:640:334:152:96:774
[ 1] 1.00-2.00 sec 208 MBytes 1.74 Gbits/sec
5.846/1.520/13.633/2.320 ms (1664/131063) 1.22 MByte 37309
3400=792:233:259:685:337:168:129:797
[ 1] 2.00-3.00 sec 208 MBytes 1.74 Gbits/sec
5.812/1.644/12.749/2.292 ms (1662/131055) 1.21 MByte 37476
3442=816:236:272:686:347:176:125:784
[ 1] 3.00-4.00 sec 204 MBytes 1.71 Gbits/sec
6.326/1.475/15.828/2.552 ms (1634/131054) 1.30 MByte 33854
3491=841:234:263:829:363:134:106:721
[ 1] 4.00-5.00 sec 209 MBytes 1.75 Gbits/sec
5.744/1.398/14.738/2.371 ms (1669/131075) 1.19 MByte 38089
3400=748:279:266:657:353:169:143:785
[ 1] 5.00-6.00 sec 204 MBytes 1.71 Gbits/sec
6.023/1.469/16.495/2.461 ms (1634/131129) 1.23 MByte 35573
3280=734:228:226:662:335:176:128:791
[ 1] 6.00-7.00 sec 204 MBytes 1.71 Gbits/sec
5.840/1.506/14.574/2.345 ms (1635/131013) 1.19 MByte 36677
3292=731:244:249:647:338:162:127:794
[ 1] 7.00-8.00 sec 205 MBytes 1.72 Gbits/sec
5.862/1.459/14.374/2.413 ms (1637/131059) 1.20 MByte 36600
3303=724:245:274:623:349:171:135:782
[ 1] 8.00-9.00 sec 207 MBytes 1.73 Gbits/sec
5.747/1.531/13.705/2.322 ms (1653/131127) 1.19 MByte 37718
3281=690:260:263:599:349:171:138:811
[ 1] 9.00-10.00 sec 208 MBytes 1.75 Gbits/sec
5.926/1.300/17.368/2.525 ms (1665/131019) 1.24 MByte 36810
3263=669:259:253:585:360:171:145:821
[ 1] 0.00-10.01 sec 2.01 GBytes 1.72 Gbits/sec
5.907/1.300/23.584/2.411 ms (16430/131072) 477 KByte 36434
33354=7488:2430:2569:6614:3466:1653:1272:7862
Bob
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