tkaiser

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  1. Maybe you were drunk at the time and can't remember? https://github.com/armbian/build/commit/7f1c5b19cd58f100218c0175f9e81df1b5276003#commitcomment-33848416 Moving posts to threads that are inaccessible is the same as deletion (but maybe you're not able to get this). Apropos deletion. Asides that you have not the slightest idea what you babble here about (totally missing the context) You claim 'it is written in the internet or in one of TKs posts, ahh wait, he deleted everything here'. Care to elaborate what you mean? Here is the list of my 5432 posts so far: https://forum.armbian.com/profile/7-tkaiser/content/ -- you almost singlehandedly stopped me from posting more in this forum since it makes absolutely no sense to post in a place where a dumbass with moderator privileges deletes posts (and either doesn't get what he does or simply lies). In case you want to censor again be aware that this post is already archived: https://archive.fo/8eMcV
  2. Nope. Netdata is awesome. All I tried to explain is why 'armbianmonitor -r' was an attempt to generate insights about SBC behavior 3 years ago and why netdata is not sufficient for this purpose. Once you look at results the data collection approach completely changes system behavior --> useless for this use case. IMO you should take care of cpufreq scaling on this class of devices and if netdata should generate insights and not just fancy graphs you might want to explore EAS.
  3. Oh, "this forum"... This forum is pretty much irrelevant for what's important. I pushed contents into this forum for over 3 consecutive years trying to attract foreign readers/developers to these contents and get interested in Armbian to get broader adoption and relevance. My goal was to strengthen a small project (back in 2015) to become relevant since my needs are a stable OS distribution on ARM (I'm a server guy, I'm not interested in fancy shit but stable operation). Unfortunately to no avail. In theory both fancy shit and stable operation are possible at the same time but that's not how it works here. Armbian is still in playground mode. And it won't change anytime soon or at all. If the 'project lead' now even thinks about sabotaging Debian's packaging all is lost. There's no 'checks and balances' into place compared to serious software projects if one person simply can decide to do whatever crazy idea strikes his head. It's a problem of ignorance and you can't argue against it if the affected person simply doesn't give a shit. Look at Countless times developers tried to escalate those old and boring problems in a polite way. What happened? It got ignored. In the end this is a single person's project the way it's set up since while all contributing developers always tried to achieve a consensus and conform to (non-existent) rules Igor simply does what he thinks would be the best idea at the very moment. While complaining being overwhelmed he even invests time to make things worse (see the absolutely useless last efforts to change kernel versions for XU4 platform). I'm tired of cleaning up since I can spend my time on more important things. It's not about which OS base to choose but to understand that a project needs rules and defined goals at least if it want to leave playground area and become the basis for 'stable operation'. Unfortunately this is not possible with Armbian. After wasting several days of my life for discussions here with always the same result (Igor doing what he wants to do without communication or even feeling bound to a 'consensus' reached before) it's time to stop. @Tido move my post to the bin as usual!
  4. I've a background in graphic design so I'm pretty sure you don't want to hear the answer. Small hint: it reminds of the 'golden age' of DTP 30 years ago. This pretty much sums up what Armbian is.
  5. Well, why providing correct information if the main goal is just to print some fancy stuff on the screen? The whole motd (login greeting) stuff is broken since ever, in the past it delayed login by insane amounts of time, now it simply displays wrong information but as usual one person doesn't give a shit: https://github.com/armbian/build/pull/1129 (how to deal with years of ignorance? Better stay away from such a waste of time).
  6. Why do you use Gill Sans instead of Armbian's font?
  7. Only if you love monitoring mistake N°1: your monitoring is that heavy that it affects the way your system behaves. The purpose of RPi Monitor is to explore system behavior, e.g. adjust tunables to get sufficient ondemand governor behavior (which is broken on several platforms now but literally no one cares since all remaining devs are busy adding new devices and fancy features). If your monitoring is that heavy that your system will constantly clock at the upper speeds how would you be able to draw reasonable conclusions? Just like you should benchmark every benchmark you're using you should monitor your monitoring solution of choice (quite simple with armbianmonitor -m). Checking out netdata 3 years ago led to the above conclusions when testing on weak SBC. Also SBC stuff like CPU temperature and cpufreq scaling is missing. Netdata will show you CPU utilization only since it's meant for servers that will run on highest clockspeeds all the time. Which SBC is more busy: the one reporting 10% CPU utilization clocking at 1200 MHz or the one reporting 20% remaining at 480 MHz. Netadata's output is useless on systems with cpufreq scaling. It's only great for servers and for operators who know what they're doing. As such it should never be too easy to install it. For those people interested. You can play around with it on ODROID bench: https://forum.odroid.com/viewtopic.php?f=29&t=32257#p246987 (please keep in mind that the four instances are S922X installations and this SoC is as capable as Intel Atom designs. Far more capable than the average SBC Armbian supports)
  8. Why do you ignore the answers you get? I explained that Armbian is not supposed to run only on one device but on many. And some of them still run with kernel 3.4. As such do we use up to 4 zram devices. More zram devices than 1 is needed on old kernels and doesn't matter on newer kernels (tested various times, simply search for zram).
  9. You miss that Armbian still supports devices running with a 3.4 kernel. And obviously you also miss all of the research already done (use forum search) and how Armbian's implementation currently works (for example choosing the most efficient algo automagically depending on kernel capabilities for the log2ram partition)
  10. Sure, check armbian-zram-config and armbian-ramlog.
  11. Benchmarking is great! You simply fire up a bunch of tests in uncontrolled manner without monitoring what's happening, then generate bar charts out of the generated numbers and can then show that your devices are the fastest SBC around (even faster than those expensive NVIDIA Jetson thingies!!1!1!!): (full results) Only problem: these bar charts above create the impression ODROID-N1 would be faster than N2 which is something Hardkernel clearly wants to avoid. Last year they cancelled their RK3399 based N1 for three reasons (two of them their customers don't want to hear) so they need to choose a bunch of benchmarks where N2 looks like an improvement compared to N1 and this pretty much explains why they only chose multi-threaded CPU benchmarks since with single-core stuff RK3399 usually is as fast as S922X or even slightly faster (this whole CPU benchmarking crap boils down to exactly this: S922X wins over RK3399 with multi-threaded loads while single-core stuff is usually faster on RK3399. Whether this is important or not always depends on the use case only. Majority of users staring at CPU benchmark charts simply don't understand that the relevant stuff happens somewhere else than stupid multi-core '100% CPU utilization' tests) So how to benchmark properly: if you're coming from the developer/researcher perspective then you need Active Benchmarking. All this kitchen-sink stuff is pretty useless. And then you do not benchmark to show how product A is faster than B but to get B as fast as A or even faster. From a user or consumer point of view it's always 'use case first'. Let's take your 'Blender' test here since this is also a real use case you're interested in (rendering stuff on slow SBC for whatever reasons). I mentioned Blender using SIMD Extensions only on x86 for a reason: to illustrate that if you're not a developer able to code and familiar with NEON2 on ARM you might be better off looking at x86 instead. The Gemini Lake thing on ODROID H2 for example is not equipped with Intel's latest and greatest extensions like AVX but at least fully supports SSE2 so maybe @rooted is so kind providing you with Blender numbers from H2? Maybe then your excitement for N2 is already gone and you're a future H2 buyer? Your stuff (a rather special application making use of special instructions) is an exception so how should benchmarks that test entirely different stuff show what's going on? You can't appropriately benchmark without knowledge and without being focused on the use case. Otherwise you're all the time just collecting numbers without meaning. Here I won't comment on why further contributing to Armbian (or using this forum) doesn't make that much sense for me but you should be aware that https://www.cnx-software.com is a great source of knowledge (especially in the comments section where insiders share details and experts explain so much stuff like how/why A72 and A73 differ and so on)
  12. Unbelievable. Nope, Armbian has no such package. Armbian is just a build system producing OS images based on some Debian or Ubuntu variants even if @Igor constantly tries to hide this by advertising Armbian as 'the best OS for SBC'. You're dealing with plain Debian here and if you found a bug you should report it upstream there. If you want a more recent Debian package version you should search backports repo first and if there's nothing try it with apt pinning. @Igorundermining stability of the package system in general by pulling in Buster packages into a Stretch repo is... I miss words... I mean what's the reason to rely on Debian's package system? What's the reason to rely on 'everything outdated as hell' AKA Debian in the first place? Isn't it the promise of 'stable' and the benefits of relying on a strong team of maintainers? It really looks like Armbian is still moving into a direction where anyone interested in STABLE operation ist lost
  13. No, you do NOT know when you're finished firing up your next round of passive benchmarking tests spitting out some numbers. You need to know what's going on to generate answers to the question 'why is A faster than B' and also 'what is the limiter on A and why can't A not be twice as fast'? You missed this change and attributed faster RockPi scores to DDR4 vs. DDR3 memory while in reality you compared old Armbian kernel config with newer one. This whole passive benchmarking approach (and IMO 'technical' Youtube videos in general) always only contributes to confusion and generates zero insights. The general rule of passive benchmarking and what in fact happened here is: you benchmark A, but actually measure B, and conclude you've measured C (what's needed instead is Active Benchmarking) What matters are insights, settings and software. And this not only applies to RK3399 but to N2/S922X too of course. So with your use case that utilizes all CPU cores in parallel you surely should go with S922X (since being definitely faster than RK3399 with everything that's multi-threaded), then use a kernel with CONFIG_HZ=100 and an optimized software stack. With Gentoo for example, most recent GCC, optimal/aggressive compiler flags for the A53/A73 combo and a CONFIG_HZ=100 kernel on the N2 your Blender job might finish in less than 40 minutes (maybe just 20 or even less if a programmer equipped with knowledge starts to look into Blender code and adds NEON optimizations to the performance critical code parts -- see here for a great example of Active Benchmarking and adding NEON optimizations on ARM to a software that utilizes SIMD Extensions only on x86 so far just like SSE2 optimized Blender does) The price you'll pay is a few weeks of your life needed to become a Linux expert since there's nothing ready. Choosing Armbian is usually a matter of convenience but if you want software that performs as fast as possible it's a problematic choice since the software stack is not meant to be performant but to be compatible and stable (funny joke since Armbian's own approach with kernel/bootloader updates is the opposite). The two distro variants Armbian provides are Ubuntu also known as 'everything outdated' Debian also known as 'everything outdated as hell' (there are areas where Armbian is in fact faster than other Ubuntu/Debian based images or distros using a more modern software stack like Gentoo or Fedora but this is due to what separates Armbian from the stock Debian/Ubuntu stuff: settings like CPU/IRQ affinity, thermal/DVFS tuning, zram, log2ram and such stuff. But two guys who mostly took care of this contributed nothing to Armbian for a longer time now and no idea how Armbian evolves here in the future. On EoL platforms like Allwinner H5 IRQ affinity is already broken but nobody cares)
  14. Another thing to consider: SoC temperature. Even if no throttling happens higher temperature will result in both slightly lower performance and slightly higher consumption (details). With a task running over an hour SoC temperature 20°C vs. 70°C might result in ~1 minute difference (maybe even more -- at least that's another reason why sbc-bench always does temperature monitoring and this also explains why N2 benchmarks currently running on "ODROID bench" in a container but with active cooling seem to be faster compared to running bare metal with passive cooling only at higher temperatures).
  15. There's a lot more. I just updated my post above with GCC 8.2 results. When Blender is built with a more recent compiler rendering gets faster (this is one of the many reasons why this Phoronix stuff is so bad -- Michael Larabel doesn't educate his users about such basics but throws a bunch of meaningless numbers and graphs at them to create the impression benchmarking would be something magic). And if you build Blender from source with appropriate compiler flags (not those ultra conservative distro defaults, especially not with 'stable' distros like Debian and Ubuntu) then it will be even faster. Very unlikely. And performance is already known, check sbc-results for PineH64 (board vendors don't matter, it's only about the SoC in question). And of course settings matter. If you use one of those crappy Xunlong images there's no need to test further since they're known for using crappy Allwinner defaults that suck.