microsoft/ntttcp-for-linux

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A Linux network throughput multiple-thread benchmark tool.

Stars: 426
Forks: 108
Open beginner issues: 0
Indexed issues: 29

Dominant language: C
License: MIT
Last GitHub push: Aug 3, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

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29 open issues indexed

ASPRINTF macro does not set the output pointer to NULL on failure Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

microsoft/ntttcp-for-linux#115 · Opened Jul 8, 2026
`validate_ip_address` method in `util.c` file does not check for address family mismatch Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

microsoft/ntttcp-for-linux#114 · Opened Jun 29, 2026
Address memory leak issues in the code where resources are not freed Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/ntttcp-for-linux#108 · Opened Apr 20, 2026
Update teardown_method for better test isolation Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

microsoft/ntttcp-for-linux#107 · Opened Apr 20, 2026
Intermittent Issue: NTTTCP on server side does not exit after test completes Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/ntttcp-for-linux#103 · Opened Mar 2, 2026
Compile error: parameter name omitted Open

Difficulty 3/5 1-2 days Newbie friendliness 15/100

microsoft/ntttcp-for-linux#101 · 1 comment · Opened Oct 23, 2025
Ntttcp stalling with `-P 200` Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

microsoft/ntttcp-for-linux#99 · 1 comment · Opened Oct 16, 2025
Request for Pre-built Binary Packages for Common Linux Distributions Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/ntttcp-for-linux#96 · Opened Jul 2, 2025
QUIC support Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

microsoft/ntttcp-for-linux#90 · Opened Mar 18, 2025
[REQUEST] Add precompiled binaries Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

microsoft/ntttcp-for-linux#87 · 2 reactions · Opened Nov 21, 2024
100% CPU utilization while bandwidth limit configured with low rate 100-1000 Mbit/s Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

microsoft/ntttcp-for-linux#81 · Opened Mar 28, 2023
Simulate request/response (TCP connection remain open) Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/ntttcp-for-linux#78 · Opened Jul 14, 2022
TCP: Total bytes sent (n_send) and received (n_recv) always mis-matched even no dropped/error pkts in network stacks between two end-points. Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/ntttcp-for-linux#77 · 6 comments · Opened Jun 9, 2022
Socket read error 104 occurred on TCP receiver running in a VM (Sender from a remote VM) Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/ntttcp-for-linux#76 · 2 comments · Opened May 24, 2022
set_socket_non_blocking() is commented out in udpstream.c Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

microsoft/ntttcp-for-linux#60 · 5 comments · Opened Jun 10, 2021
Discrepancy on tput metric between console output log & the xml output log Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/ntttcp-for-linux#56 · Opened May 26, 2021
Testing UDP yields "the UDP send size is too big" error Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

microsoft/ntttcp-for-linux#50 · 1 reaction · Opened Mar 12, 2021
UDP throughput is not credible: shows 224Gbps on a host constrained by PCIe Gen3x8 (~56Gbps). TCP throughput on the same link is always spot on. Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/ntttcp-for-linux#46 · Opened Jan 22, 2021
*** Error in `ntttcp': realloc(): invalid pointer: 0x00007ffd842ffb80 *** Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/ntttcp-for-linux#45 · 3 comments · Opened Jan 22, 2021
Monotonic clock sources should be used to calculate bandwidth Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

microsoft/ntttcp-for-linux#44 · 1 comment · Opened Jul 22, 2020
Remove structure slops to reduce cache pressure Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

microsoft/ntttcp-for-linux#42 · 1 comment · Opened Jun 26, 2020
Support io_uring Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/ntttcp-for-linux#41 · 1 reaction · Opened Jun 26, 2020
Avoid using atomic primitives in the hot path Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

microsoft/ntttcp-for-linux#40 · 1 comment · Opened Jun 26, 2020
Question Related to the Code Open

Difficulty 1/5 Under an hour Newbie friendliness 20/100

microsoft/ntttcp-for-linux#39 · Opened Apr 14, 2020
cmake file lacks install command Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

microsoft/ntttcp-for-linux#36 · 1 reaction · Opened Dec 9, 2019
A new name to this tool? Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

microsoft/ntttcp-for-linux#35 · 3 comments · Opened Oct 22, 2019
Do we have a plan to support macOS? Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

microsoft/ntttcp-for-linux#32 · 3 comments · Opened Oct 10, 2019
Send throughput not actually testable Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

microsoft/ntttcp-for-linux#9 · Opened Dec 30, 2017
Add MSG_ZEROCOPY in TCP socket? Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/ntttcp-for-linux#8 · Opened Nov 17, 2017

microsoft/ntttcp-for-linux

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