Re: rsync to ext2 filesystem issues

[Ramiro Aceves <ea1abz%gmail.com@localhost>]

El 16 de septiembre de 2026 13:55:39 CEST, Luis Falcon <falcon%gnuhealth.org@localhost> escribió:
>Good morning, Ramiro

Good morning Luis,


>We have to be cautious about the IO stats when writing to external
>conventional drives (non SSD). My experience and my impression with this
>type of drives is that copying is heavily influenced by the operating
>system caching, dirty pages, (in the case of linux kernel take a look at
>"dirty_bytes" in
>https://www.kernel.org/doc/html/latest/admin-guide/sysctl/vm.html). I
>have tried different filesystems (ext2, btrfs..) and although it can be
>a slight difference among them, my understanding is that those
>bottlenecks, random changes of IO wait queue and throughput  depend
>more in the underlying technology (hardware) and the operating system
>than in the filesystem itself (although is important, too)
>
>Best,
>

Thanks so much for pointing to that docs and sharing your knowledge. I think I must read and learn a bit more in depth how operating systems work in order to understand many things. I have almost forgotten everything I learnt about the subject when I was at University for my electrical engineering degree. I have heard about Andrew S. Tanenbaum book, I do not if it is a good place to start.

Thanks.
Ramiro.