Felix Miata composed on 2021-03-10 06:23 (UTC-0500):
>> Here's a simple look at RAM before and after first launching IceWM, then
>> rebooting, then a freshly installed Plasma session on an old single core PC
>> that
>> had had only KDE3 and IceWM on TW.
>> # inxi -CGIMy
>> Machine:
>> Type: Desktop System: Dell product: OptiPlex GX280 v: N/A serial: 20HRT71
>> Mobo: Dell model: N/A serial: .. . BIOS: Dell v: A07 date: 11/29/2005
>> CPU:
>> Info: Single Core model: Intel Pentium 4 bits: 32 type: MCP L2 cache: 1024
>> KiB
>> Speed: 2793 MHz min/max: N/A Core speed (MHz): 1: 2793
>> Graphics:
>> Device-1: Intel 82915G/GV/910GL Integrated Graphics driver: i915 v: kernel
>> Display: x11 server: X.Org 1.20.10 driver: loaded: intel
>> unloaded: fbdev,modesetting,vesa resolution: 1680x1050~60Hz
>> OpenGL: renderer: Mesa DRI Intel 915G x86/MMX/SSE2 v: 1.4 Mesa 20.3.4
>> Info:...Shell: Bash inxi: 3.3.01
>> # free # before launching startx into IceWM
>> total used free shared buff/cache
>> available
>> Mem: 1525408 51264 1313580 1552 160564
>> 1293900
>> Swap: 1036156 0 1036156
>> # free # after launching startx into IceWM and Xterm
>> total used free shared buff/cache
>> available
>> Mem: 1525408 71732 1213716 14980 239960
>> 1259048
>> Swap: 1036156 0 1036156
>> 20468 used by IceWM
>> # inxi -Sy
>> System:
>> Host: gx28b Kernel: 5.7.11-1-default i686 bits: 32
>> Desktop: IceWM 2.1.1 Distro: openSUSE Tumbleweed 20210307
>> I rebooted before launching Plasma and Konsole on the same PC:
>> # free # before launching startx into virgin Plasma
>> installation
>> total used free shared buff/cache
>> available
>> Mem: 1525568 51536 1305632 8444 168400
>> 1286812
>> Swap: 1036156 0 1036156
>> # free # after launching startx into virgin Plasma installation
>> total used free shared buff/cache
>> available
>> Mem: 1525568 188264 899976 51360 437328
>> 1103940
>> Swap: 1036156 0 1036156
>> 136728
>> # inxi -Sy
>> System:
>> Host: gx28b Kernel: 5.7.11-1-default i686 bits: 32
>> Desktop: KDE Plasma 5.21.1 Distro: openSUSE Tumbleweed 20210307
>> No, it's not Debian. I never put Plasma on my Debians, which all use TDE.
>> This was
>> a freshly updated Tumbleweed, so the Plasma version is fresh. There's no
>> XFCE on
>> it. It won't be added either, as there's nothing about it I like better than
>> KDE3,
>> TDE or Plasma, and the disk has no room for more additions, worthwhile or
>> otherwise. Thus, the difference between XFCE and Plasma or IceWM will need a
>> different PC.
>> The point is, Plasma can be rather lean, using only 116260 more than IceWM
>> to get
>> a basic session started.
> The following isn't directly comparable to the above, as the Plasma
> installation
> and user are anything but fresh. However, it is a minimal, and started up in
> same
> manner, just on 64 bits instead of 32, and the same Plasma version on the
> same OS
> release, with 270996 instead of 136728 used to start a session:
> # fresh boot to multi-user before startx into Plasma & Konsole
> total used free shared buff/cache
> available
> Mem: 3934880 92840 3612164 9912 229876
> 3601836
> Swap: 4200428 0 4200428
> # after startx into Plasma & Konsole
> total used free shared buff/cache
> available
> Mem: 3934880 363836 3040312 75688 530732
> 3250656
> Swap: 4200428 0 4200428
> 270996 used by Plasma & Konsole
> # inxi -CGIMSy
> System:
> Host: gx745 Kernel: 5.10.16-1-default x86_64 bits: 64
> Desktop: KDE Plasma 5.21.1 Distro: openSUSE Tumbleweed 20210307
> Machine:
> Type: Desktop System: Dell product: OptiPlex 745 v: N/A serial: 901DSC1
> Mobo: Dell model: 0GX297 serial: ..CN6986173Q1835. BIOS: Dell v: 2.6.2
> date: 08/12/2008
> CPU:
> Info: Dual Core model: Intel Core2 6700 bits: 64 type: MCP L2 cache: 4 MiB
> Speed: 1715 MHz min/max: N/A Core speeds (MHz): 1: 1715 2: 2105
> Graphics:
> Device-1: Intel 82Q963/Q965 Integrated Graphics driver: i915 v: kernel
> Display: x11 server: X.Org 1.20.10 driver: loaded: modesetting
> unloaded: fbdev,vesa resolution: 1920x1200~60Hz
> OpenGL: renderer: Mesa DRI Intel 965Q (BW) v: 2.1 Mesa 20.3.4
> Info:...Shell: Bash inxi: 3.3.01
> This CPU is one year older than the thread OP's Conroe 2.33GHz E6550,
> a Conroe 2.67GHz E6700.
> Another difference I expected was that though both are on Dells using
> integrated
> Intel video, the shared RAM used by video likely was more on the 64 bit,
> because
> of the difference between 1680x1050 and 1920x1200 displays used. the 64 only
> has
> DVI and VGA to choose from, and used DVI, while the 32 has the same outputs,
> but
> it's display only has VGA and DisplayPort, so had to use VGA. So, I retested
> the
> 32 with the other display and VGA instead of DVI. Used only went from 188264
> to
> 188844, +580. :P
Here is a look at less impressive Plasma results, done on a laptop roughly
similar
to a Core2Duo I think I saw mentioned up-thread. Again it's from openSUSE, but
this time Leap 15.2, featuring an older KDE 5.18 release. openSUSE provides 4
basic ways to freshly install OS with KDE:
1-base install of KDE base without recommends
2-base install of KDE base with recommends
3-"full" install of KDE without recommends
4-"full" install of KDE with recommends
The following comes from a fresh #2, along with a few selected adds and deletes:
# free # freshly booted, before startx into Plasma
total used free shared buff/cache available
Mem: 1911156 82236 1655308 26128 173612 1659980
Swap: 2457596 0 2457596
total used free shared buff/cache available
# free # after startx into Plasma and Konsole
Mem: 1911156 87780 1671092 17940 152284 1663372
Swap: 2457596 0 2457596
total used free shared buff/cache available
Mem: 1911156 377456 1076324 78056 457376 1307280
Swap: 2457596 0 2457596
295220 RAM decrease opening Plasma session
# inxi -CGISy
System:
Host: e6400 Kernel: 5.3.18-lp152.66-default x86_64 bits: 64
Desktop: KDE Plasma 5.18.6 Distro: openSUSE Leap 15.2
CPU:
Info: Dual Core model: Intel Core2 Duo P8600 bits: 64 type: MCP
L2 cache: 3 MiB
Speed: 642 MHz min/max: 800/2401 MHz Core speeds (MHz): 1: 642 2: 643
Graphics:
Device-1: Intel Mobile 4 Series Integrated Graphics driver: i915 v: kernel
Display: server: X.Org 1.20.3 driver: loaded: modesetting
unloaded: fbdev,vesa resolution: 1280x800~60Hz
OpenGL: renderer: Mesa DRI Mobile Intel GM45 Express v: 2.1 Mesa 19.3.4
Info:...Shell: Bash inxi: 3.3.01
My plan when time permits is to add Tumbleweed to the same laptop, to compare
results with a much newer KDE. I might add Bullseye as well, or instead.
--
Evolution as taught in public schools, like religion,
is based on faith, not on science.
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
Felix Miata *** http://fm.no-ip.com/
