Maybe I have bit too positive outlook on this, yeah.

But that article also emphasizes a lot (first half) that a child’s environment simply matters a lot. Esp. having parents that have higher education themselves and are there for the child to support it regarding learning outside of school can make a big difference. And this isn’t just about the first couple years before elementary school (what article says re “Wortschatz”). Esp. the ongoing school period thereafter. E.g. “Does it make a difference in a child’s household if parents can speak English when trying to learn English?” - of course it does!

The point on “Brennpunktschulen” is also very environment driven. I’m not saying that “Lehrermangel” isn’t real, or that having this system of three school paths starting from 5th grade is the best invention ever.

But one can’t put all the blame on the school system, when “what happens outside of school” has such a big impact on a child.

Your last paragraph seems misinformed.

https://en.m.wikipedia.org/wiki/Gymnasium_(Germany)

State-funded schools (a big majority) are tuition-free, as foreseen by the respective laws, even often on constitutional level. Segregation of students by parent wealth or income is looked down upon, to the point of being an exception to the constitutionally guaranteed freedom to have private schools (Article 7 section 4 of the German constitution, Sondierungsverbot). Of the private gymnasia, the vast majority is run by the Catholic Church on very low tuition fees (which is more easy as by Concordat, the Church receives a high percentage of the amount of money the State need not spend for a pupil in a Church-school); fees for schools who need to earn money by teaching are higher. Schools with fees generally offer scholarships.

In 2005, the German government spent €5,400 per student for those attending public gymnasium. This is less than what was spent on a student attending Hauptschule, but more than was spent on those attending Realschule.[22] Some Hauptschule and Gesamtschule students have special needs requiring extra help, so those schools cannot operate as cost-effectively as gymnasia.

I myself went to a public Gymnasium and can still remember that among my classmates we had a wide range re “parent income and status”.

Literally from:

• ‘single parent that barely gets by’
• ‘teacher parents’
• attorneys / judges / cardiologist / engineers / etc.
• CEO parent of an international company

I literally:

• went through elementary school
• got a recommendation for going to a Gymnasium at end of 4th year based on my performance
• picked one out of the available Gymnasiums in my area (within what was doable by bus on a daily basis)
• then went there

And even if you go to “Hauptschule”, that’s not the end of education. One can still do what’s called “M-Zweig”, which gets you the equivalent degree of “Realschule”. Then one can go to “FOS”, which gets you a degree close to that of Gymnasium. It at least allows for going to a “university of applied sciences”, which is less geared towards academics and more towards industry. Still can get you your masters degree or if a doctors degree if one really wants that and partners with an “academic university” (AFAIR).

Some children simply take that other route. Still, it comes down to ability of the child. Of course, having a non-supportive environment that doesn’t believe in achild can make things harder on it. Some children might actually be motivated by “potentially escaping that”.

But to say this education system is a “class filter” is just wrong.

I went through setting up netdata for a sraging (in progression for a production) server not too long ago.

The netdata docs were quite clear on that fact that the default configuration is a “showcase configuration”, not a “production ready configuration”!

It’s really meant to show off all features to new users, who then can pick what they actually want. Great thing about disabling unimportant things is that one gets a lot more “history” for the same amount of storage need, cause there are simply less data points to track. Similar with adjusting the rate which it takes data points. For instance, going down from default 1s internal to 2s basically halfs the CPU requirement, even more so if one also disables the machine learning stuff.

The one thing I have to admit though is that “optimizing netdata configs” really isn’t that quickly done. There’s just a lot of stuff it provides, lots of docs reading to be done until one roughly gets a feel for configuring it (i.e. knowing what all could be disabled and how much of a difference it actually makes). Of course, there’s always a potential need for optimizations later on when one sees the actual server load in prod.

In my experience, getting one can be more about politics and fulfilling certain management checkboxes than about technical skill and experience.

You didn’t mention how big those volumes are and how frequently the data changes.

Assuming it’s not that much data:

• use tar to archive each volume first, while using proper options to preserve permissions and whatever else is important for your usecase
• use restic to backup those archives
• use a proper pruning strategy to not let your backups get too big:
  • I’m not that familiar with restic, but maybe you can backup those archives separately and apply a more aggressive pruning strategy just for them
  • simply might be needed, cause deduplication (AFAIK) might not be that great with backing up archives
  • but maybe if the volume data and the resulting archive doesn’t change that often, deduplication would be sufficient even with a not so aggressive pruning strategy