Questions tagged [iperf]
120 questions
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WARNING: did not receive ack of last datagram after 10 tries
I use iperf to test bandwidth, if i set large test bandwidth, it gives me "WARNING: did not receive ack of last datagram after 10 tries" and there is no report, i want to know what does this mean?
iperf -c xxx -u -b 100m
larry
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Iperf TOS issue on Windows
Hi I tried to execute Qos tests using Windows machine.When send some prioritized traffic usinf -S option it sends only normal data.Registry setting DisableUserTOSSetting is set to 0.
When send TOS data from a linus machine to windows it works fine…
vamsi
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3 answers
Can software traffic generator generate 100 Mbps traffic?
Can software traffic generators like iperf etc can generate 100mbps traffic?
else is there any software generators which can produce such high rates ?
Regards,
Mithun
Vidya
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How can I use an iperf output and only grep average Bandwidth?
I am here finding a way to display the average of iperf bandwidth using the script. I am not sure whats wrong with command, i dont get the output of Bandwidth displayed. I need output something like this
average ....... 936.8 Mbits/sec
if [ "$#" -ne…
ls440
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iperf3: error - unable to connect to server: No buffer space available
I am testing usb to ethernet adapters by using iperf. The product I am testing has 12 ports to test, and I have 12 usb to ethernet adapters each having their default ip address.
I am using Test Stand to test these ports. My tests are stable and they…
Theta
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Non IPERF throughput testing between two nodes with selective path
I have been working with a multinational ISP for about 10 years and have a lot of experience with network design, development and troubleshooting. I understand the intricate workings of most switching and routing technologies which an ISP would use…
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how to test 10G NIC in loopback for full throughput?
I am using 10G NIC x520-DA2 (which is x8 Lane) in windows 10 Enterprise 64 Bit on DELL Optiplex 7080 Tower with Intel Core i7-10700 . X520-DA is installed on PCie slot 2 of optiplex 7080 that is PCIe x16.
I need to test x520-DA2 maximum throughput…
optiplex91
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UDP packet won't send if it is too small
I am in an incredibly odd situation. Basically if I try to send UDP packets smaller than 1445 in size they never end up reaching their destination. I have a pretty ordinary router and a pretty ordinary Macos based computer.
Here is the test that I…
ktb92677
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Benchmarking AWS outbound Internet bandwidth (egress) "up to 25 Gbps"
We conducted our tests on c6gn.2xlarge AWS instances located is us-east-1 region, which are advertised in AWS documentation to have a network performance of "Up to 25 Gbps" with a baseline bandwidth of 12.5 Gbps.
We ran UDP tests with iperf3, from a…
Eric
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Does Throughput calculated adds up using multiple (all active) physical adaptor
I had a network adaptor of speed 20Gbps. By stressing this adaptor using one of benchmarking tools (netperf is the tool which I used), I was able to get ~18Gbps which is well accepted.
Now, after installing one more adaptor of the same speed i.e.…
Chandan Hegde
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transfer file at iperf bandwidth/throughput
I need to transfer a file between 2 servers, the output of iperf is:
TCP window size: 85.0 KByte (default)
------------------------------------------------------------
[ 3] local X.X.X.X port 58986 connected with Y.Y.Y.Y port 5001
[ ID] Interval …
nbari
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iperf3 not consistent across different OS'es
I have connected two rooms via a 10Gbit fiber connection. The connection has one MikroTik switch with four SFP+ on one end (room A) and an Ubiquiti Unifi 24 ports with two SFP+ (room B).
On Room A, I have a Mac mini 2018 with a 10Gbit ethernet…
francisaugusto
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append date and time before each line in a text log file in windows 10
I want to append date and time before each line in a text log file in windows
I run iperf command in cmd in windows 10.
iperf.exe -c192.168.5.199 -u -t4 -i1 -f Kbytes -w1024k -b1024k >> client-log.txt
C:\iperf-2.0.9-win64\iperf-2.0.9-win64>iperf.exe…
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Getting 2g speeds on hyper-v VM through a 10g nic
I'm testing my speeds using IPERF as I've recently installed a 10G cisco switch and intel 10g NIC's on some servers to communicate with a nas server.
I noticed my reads and write were awful so I've tested the NIC's themselves and on the host machine…
UserSN
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Is it possible to test throughput without server cooperation?
To measure throughput between two points in a network using iperf, you have to run iperf at one point in server mode. My question is, is there a tool I can use to measure this bandwidth without running anything at the server? That is, without an…
wirate
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