05-17-2021, 12:56 PM
Debian 8 uses the Linux Kernel 3.16.* (according to https://wiki.debian.org/DebianJessie). Debian 9 has Linux Kernel 4.9 LTS (according to https://wiki.debian.org/DebianStretch). Debian 10 is running Linux Kernel 4.19 (according to https://wiki.debian.org/DebianBuster).
With such kernel jumps there are a lot of improvements to await. Especially from 3.16 to 4.9 there were a lot of changes. With such kernel updates a lot of important things are being either fixed or improved. We're talking about things like improvements to the network stack, disk management, RAM management, file system and etc. Main goal is also to improve the performance of the system overall, fix security holes and other goals like introducing new kernel level features.
The list is huge:
- https://kernelnewbies.org/Linux_3.16
- https://kernelnewbies.org/Linux_4.9
- https://kernelnewbies.org/Linux_4.19
Another important point are the actual software packages that come with the Debian OS. They also get a lot of updates as with every new Debian version they usually skip a lot of versions (sometimes less and other times more) between them. Improvements to the software that is running can also have very positive effects. They applications might be way more optimized and run much better overall.
Might be that you are experiencing this. Maybe. The possibility would be you're in a lucky position / moment and the server and network has a lot more power freely available than usual.
If you can reproduce this performance gain with every Debian 8 to 10 upgrade process at anytime it is most likely that you profit from the huge updates that came with the new kernel version and software packages in the newer Debian versions.
Another possible option: it's related to the new kernel version but it's actually some kernel magic related to network stack, caching and such. That's too deep to dive in though. I cannot even explain it if I wanted right now. I've read about it somewhere before though.
With such kernel jumps there are a lot of improvements to await. Especially from 3.16 to 4.9 there were a lot of changes. With such kernel updates a lot of important things are being either fixed or improved. We're talking about things like improvements to the network stack, disk management, RAM management, file system and etc. Main goal is also to improve the performance of the system overall, fix security holes and other goals like introducing new kernel level features.
The list is huge:
- https://kernelnewbies.org/Linux_3.16
- https://kernelnewbies.org/Linux_4.9
- https://kernelnewbies.org/Linux_4.19
Another important point are the actual software packages that come with the Debian OS. They also get a lot of updates as with every new Debian version they usually skip a lot of versions (sometimes less and other times more) between them. Improvements to the software that is running can also have very positive effects. They applications might be way more optimized and run much better overall.
Might be that you are experiencing this. Maybe. The possibility would be you're in a lucky position / moment and the server and network has a lot more power freely available than usual.
If you can reproduce this performance gain with every Debian 8 to 10 upgrade process at anytime it is most likely that you profit from the huge updates that came with the new kernel version and software packages in the newer Debian versions.
Another possible option: it's related to the new kernel version but it's actually some kernel magic related to network stack, caching and such. That's too deep to dive in though. I cannot even explain it if I wanted right now. I've read about it somewhere before though.
![[Image: zHHqO5Q.png]](https://i.imgur.com/zHHqO5Q.png)