Resources usages (measures)

[kozaki]

I installed kernel-desktop-tmb-latest.mga6 to further inquiry upon future hardware requirements, including boot time and general responsiveness of Mageia6.

Resources usages changes drastically between these two kernels:
- with Mate, from 300 down to <90 MiB EDIT: actualy it's more 75 MiB (1)
- under Plasma5, diff is much less noticeable, like 350 vs 380 MiB.

On another hand, playing an mp3 with tmb kernel I thought the Rolling Stones suddenly goot tiireed: tempo is divided by two. Same with Audacity and mpv.

What's in either of the two kernels that causes such an amazing diff in RAM (from 20 to a mere 5% of the total available) usage upon boot?

(1) verified multiple times since kernel 4.7rc6.

EDIT: Title changed for better clarity hopefully (was 'kernel-desktop tmb's greatness and weirdness')

[kozaki]

Hmm actually it's a bit weirder than I thought.
Using mate-system-monitor, free and ps_mem with their stock settings give three quite different results:

With latest kernel-desktop default mga6 all three tools give, respectively: 307 / 95 (available = 1719) / 194 MiB:
screen

Latest kernel-desktop-tmb mga6: 114 / 89 (available = 1901) / 190 MiB:
screen

While I've read http://www.linuxatemyram.com/ and know a bit the impact of enabling AUDIT in kernel --is enabled in both anyway--, I'd be embarrassed to say how much memory does Mageia6 use in its present state. Do you know, and mind to explain even a bit please?

[filip]

On our wiki page you can find more info about kernel flavours.

[kozaki]

Thank you filip. kernel-tmb features such as IO scheduler and overall better responsiveness for the desktop hasn't changed since I used it ten years ago.

Please let me re-post my question: how much memory does Mageia6 use? For either of the above kernels.

[ozky]

That's very depend on computer hardware desktop programs like chromium/chrome there is no real answer koziaki to your question.

[kozaki]

Well, out of the three memory measurement utilities I'll take ps_mem numbers. Considering how it carrefuly output shared RAM per program and Total. And that its numbers do not change much between kernels like with the other tools. (1)

Now for ozky who read only the last sentense in the thread: I'm wondering where does the vast difference in physical memory used by Cauldron: On the same hardware, software and running processes, the two kernels give numbers going from 100 to 300 MiB according to 'mate-system-monitore' and free. I asked you guys, as I've never encountered a three times higher memory consumption between two kernels.

(1) There's also smem which like smap has the ability to measure PSS memory. It's nice charts would probably help me start to understand the highly different numbers I get with Cauldron. I'd have them already if I knew how to have urpm properly display dependencies in Mageia. For now after installing python-matpoltlib and a bunch of python*, smem complains that... matplotlib's missing; and `pip install` about missing devel packages (most probaly I didn't find a way to install the base devel pkgs yet).

[ozky]

Now you mix two totally different things system total used memory and kernel used memory that need to test without x11 system running with init 3.
You can't test kernel used memory with mate system monitor,it shows nothing from kernel itself it shows only how much whole system use memory.
If you really wan't to get how much your system use at kernel side memory take a look this.
http://unix.stackexchange.com/questions ... kernel-use

[kozaki]

On a given hardware, Mate session: how much RAM does Cauldron really use?

Kernel in use/Tool ; mate-system-monitor, free (available) ; ps_mem; screenshot
latest kernel-desktop default ; 307 ; 95 (1719) ; 194 ; here
latest kernel-desktop-tmb ; 114 ; 89 (1901) ; 190 ; here

Numbers in MiB with everything default.

@ozky am interested about Mageia6 total resources consumption and only that.

[ozky]

Where you need that information ? it don't change anything,my own system take 1.3G memory with plasma 5 so what.
Your main question make no any sense again ask more better than silly question where 5 years old knows answer without computer.
Then.

Thank you filip. kernel-tmb features such as IO scheduler and overall better responsiveness for the desktop hasn't changed since I used it ten years ago.

Please let me re-post my question: how much memory does Mageia6 use? For either of the above kernels.

10 years no any change ? are you out of your mind ? bfs was not 10 years ago neither bfq ssd scheluder,kernels been dramatically changed in 10 years.

If you still can't understand get new life i will not answer anymore to some noobie who don't understand any facts.

[kozaki]

@above poster you got a problem. Let me clarify for others.

I'm testing a number of OSes for boxes we refurbish at the city DIY house. That's for demo now and, starting in September, for selling at super good prices. Goal is to « do a lot with less than you think » and local FOSS democratization. See, it's not easy for everyone these days to buy yet another « Windows® PC » whether for themselves or for their children considering the changes, threats or minimal requirements of the dominant commercial OS (1).
So, hardware requirements play an important part in our spec sheet. And not only our but for many people around. Of which, considering its words above, prev. poster is not aware and/or just give a sh**.
We're already running five main stream apps happily on a few foss OSes with as low as 512-to128 MiB RAM.

Hope this clarifies the question in this thread (posts #1 and #8).

(1) dual core, PAE and 2 GB RAM. i.e. lets hundreds of machines here only good for trash, which as you may know means: in the hands of some unlucky kids enslaved to that super job in Bangladesh or West Africa.

[kozaki]

Testing on the same VM with 0.5 GiB RAM, results are much the same between the two kernels (here with a console and mate-system-monitor opened):

Kernel in use/Tool: mate-system-monitor, free (available) ; ps_mem

latest kernel-desktop default: 111 ; 86 (385) ; 177
latest kernel-desktop-tmb: 107 ; 86 (391) ; 177

smem (PSS) = ps_mem +2 MiB (I haven't been able to get a working smem/matplotlib to get a pie).
I'll take these "variations" in account when comparing OSes and gui environments for now.