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[--rate_limit] A stable relative error (~7.5%) observed #125
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Hi doctormin, thanks for the info! |
Hi Hassan! I am afraid that I can not share the .py script immediately because this test was done by me when I was working for an enterprise (I don't have access to it any more). But I can explain more about what happened in my test script:
So the script can collect multiple This relative error was stable and reproducible in my experience when I was working on it. Could it be that the input (args --rate_limit) is throughput and the output of perftest's terminal report is goodput? |
Hi, perftest output is goodput, I'm trying to reproduce this issue but I can't get those relative errors, I can get barely 1.5%~ at maximum |
I see, thanks for the information. Maybe the packet size setting will influence the gap between throughput and goodput (but I am not so sure). In my previous test (~7.5% result), I select the very packet size which can make the throughput to be MAX in my testbed (by carrying out |
Hi @doctormin, We investigated the Issue and soon a fix will be merged. |
Happy to hear about that :) |
Our pleasure! |
Hi @doctormin, |
Hi @HassanKhadour, |
No worries, thanks for reporting the Issue, Closing |
Hi all:
I'm very interested in your work. And I personally tested
![image](https://user-images.githubusercontent.com/49093593/132168976-ea952fab-7c0f-420f-b7d4-ec350db2043d.png)
--rate_limit
using a Python script between two machines in an IB network. The network traffic limits were set ranging from 10MBps to 5000MBps+. Whether it isib_send_bw
,ib_read_bw
orib_write_bw
, a stable relative error was observed.The rate_limit_type is SW.:
I wonder what mechanism causes this stable relative error, thanks!
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