I am running the rolling release of Kali as a guest OS on windows through Virtualbox and dealing with the following problem...(which I believe is a result of misconfiguration of software)
I am currently trying to do 3 things (simultaneously)
- test masscan
- use Nload to observe masscan performance
- browse the internet
As the title says, my internet performance is nonexistent when I am trying to do these few things at the same time. I also cannot ping google either. I read this article https://www.cyberciti.biz/faq/linux-tcp-tuning/ about improving performance and I followed the articles' suggestions but still suffer the same symptoms. What is happening here? I am more interested in understanding where to look to resolve this than the actual solution(although, I do want to solve this problem). I come from a windows background so I'm not sure where to look in Linux to start solving this issue. Nload shows my throughput as 57.59 kBit/s which is nowhere near my bandwidth. Why is this throughput so low? Where should I be looking to determine what is misconfigured.
Also worth noting, I can reasonably say that my hardware is capable of doing more as I have a 16 core box with 48 gigs of ram. 8 of which is dedicated to this specific instance of Kali.
Also worth noting, when I run a speed test through Google's search engine tool my download speed is 141.1 Mbps and the upload speed is 21.6 Mbps. Although that is not the same as my host OS, it is still significantly better than the results I saw using masscan. The Nload output also matched these results at the time of testing. These last observations are what lead me to think this is a misconfiguration of software.