RAM comparison thread

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Re: RAM comparison thread

Postby edbarx » 2016-03-11 07:33

dzz wrote:Running TDE here on a number of Debian systems since it was first forked. I never experienced what edbarx wrote about TDE in dozens+ of TDE installs (but not nearly as good as Hallvor posted). It's normally similar resource usage to xfce4, which I also use. A TDE installation can be anything from tde-base-trinity (basic DE) to tde-trinity (monster meta). That might make a difference, I don't install the meta. Whether you use a display manager (on this box, TDM) or startx likely counts.

To be fair, I installed Trinity Desktop using tde-trinity which pulled many packages that I didn't want to install. The selection of automatically chosen software was clearly aimed at common computer users who only use a computer to chat, surf the net, write emails, watch videos, listen to music and share files.

If I remember well there was also file indexing going on, sudo was installed and su failed to recognise my root password.

ADDED LATER:
The following memory usage is after I stopped slim and XFCE using the command:
Code: Select all
# /etc/init.d/slim stop

It seems the kernel alone is using ~420 Mega Bytes! My installed kernel version is 3.2.0-4-rt-amd64. Running startx after stopping slim and saving the results shown below to a text file resulted into XFCE being loaded almost instantly. This shows that the kernel is doing some type of memory caching so that already used programs would use the same memory image avoiding reading and loading their executable code into memory. Unless there is a way of looking into what memory is chached by the kernel, memory use reporting alone is next to useless. Kernel memory caching is a brilliant idea to improve overall system response and to reduce having to read data from disks.

Code: Select all
             total       used       free     shared    buffers     cached
Mem:          1941        466       1474          6         41        327
-/+ buffers/cache:         97       1843
Swap:            0          0          0

 Private  +   Shared  =  RAM used   Program

116.0 KiB +  18.0 KiB = 134.0 KiB   uuidd
196.0 KiB +  34.5 KiB = 230.5 KiB   atd
232.0 KiB +  61.5 KiB = 293.5 KiB   init
188.0 KiB + 164.5 KiB = 352.5 KiB   avahi-autoipd (2)
328.0 KiB +  38.0 KiB = 366.0 KiB   rpc.idmapd
384.0 KiB +  38.5 KiB = 422.5 KiB   gpg-agent
324.0 KiB + 104.5 KiB = 428.5 KiB   cron
380.0 KiB +  57.0 KiB = 437.0 KiB   acpid
456.0 KiB + 153.5 KiB = 609.5 KiB   rpcbind
664.0 KiB + 162.5 KiB = 826.5 KiB   rpc.statd
512.0 KiB + 325.5 KiB = 837.5 KiB   su
812.0 KiB +  71.0 KiB = 883.0 KiB   dbus-daemon
680.0 KiB + 324.5 KiB =   1.0 MiB   login
740.0 KiB + 332.5 KiB =   1.0 MiB   getty (5)
  1.1 MiB +  86.5 KiB =   1.2 MiB   udevd
  1.3 MiB +  76.5 KiB =   1.3 MiB   rsyslogd
  1.5 MiB +  50.0 KiB =   1.5 MiB   wpa_supplicant
  1.3 MiB + 647.0 KiB =   1.9 MiB   polkitd
  1.6 MiB + 831.0 KiB =   2.4 MiB   console-kit-daemon
  2.2 MiB + 123.5 KiB =   2.4 MiB   privoxy
  2.2 MiB + 762.0 KiB =   3.0 MiB   upowerd
  3.0 MiB + 969.0 KiB =   3.9 MiB   bash (2)
 13.6 MiB + 183.0 KiB =  13.8 MiB   dhclient (2)
---------------------------------
                         39.1 MiB
=================================
Debian == { > 30, 000 packages }; Debian != systemd
The worst infection of all, is a false sense of security!
It is hard to get away from CLI tools.
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Re: RAM comparison thread

Postby alderaan » 2016-03-14 15:01

I 'll try to make mine a little more scientific (lol).

Machine 1:
CPU: Intel Core 2 Duo E6550 @2.33 GHz [64-bit]
Video: Intel GMA 3100
RAM: 4 GB
OS: Debian 8 Jessie (Stable) [64-bit]
DE: XFCE
Applications:
Terminal: xfce-4 terminal running only top and one tab for the memory check
Web browser: Iceweasel (2 windows, 12 tabs total)
File manager: Thunar (2 tabs)
Text Editor: Mousepad


(A) Recovery mode (just after booting)
(B) CLI booting with the parameter: "systemd.unit=multi-user.target" on the kernel line
(C) GUI but zero programms running (just after booting)
(D) Busy: GUI but no uptime
(E) Busy and after 21 days uptime

Code: Select all
Session      free -m        ps_mem.py
  (A)          140           28.7 MiB
  (B)          187           58.0 MiB
  (C)          428          195.1 MiB
  (D)         1163          700.6 MiB
  (E)         3447            1.1 GiB


Pretty impressive, isn't it?
Some notes:
* Between sesions (E) and (D) the Iceweasel is dropping from 869 to 700 MiB (according to ps_mem.py) with exactly the same tabs opened!
* After the womping 869 MiB of Icewesel in session (E) the next biggest number is 24.3 MiB for xfce4-appfinder.

======================================================================================================================

Machine 2:

CPU: Intel Pentium 4 3.20 Ghz [64-bit]
Video: Integrated Graphics
RAM: 1.5 GiB
OS: Debian 8 Jessie (Stable) [64-bit]
DE: LXDE

Applications:

Terminal: LX Terminal running only top and one tab for the memory check
Web browser: Iceweasel (3 windows, 23 tabs total)
E-mail client: Icedove (many big mail accounts + Usenet + RSS)
File manager: PCManFM (2 windows, 5 tabs total)
Video player: VLC playing a 2.4 GiB movie (xvid.avi file)
Libre Office: 3 spreadsheat files (totaling size: 1.1 MiB)
Torrent Client: Transmission (Downloading 1 file and seeding 8)
Text Editor: Leafpad


(A) Recovery mode (just after booting)
(B) CLI booting with the parameter: "systemd.unit=multi-user.target" on the kernel line
(C) GUI but zero programms running (just after booting)
(D) Busy: GUI but no uptime
(E) Busy and after 6 days uptime

Code: Select all
Session       free -m       ps_mem.py
  (A)          99           20.7 MiB
  (B)         135           42.4 MiB
  (C)         368          158.1 MiB
  (D)         1408         961.3 MiB
  (E)         1396         718.7 MiB


How memory usage is bigger in (D) than (E), I can't explain!


The same machine with a quite minimal Sid installation that I use for experimenting and learning (with XFCE and Enlightenment available hence the two numbers in the (C) session):

Code: Select all
Session       free -m       ps_mem.py
  (A)          20             9.2 MiB
  (B)          35            42.0 MiB
  (C)         112/65        167/104 MiB


=> Enlightenment is quite lighter than XFCE
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Re: RAM comparison thread

Postby None1975 » 2016-12-27 18:13

I installed Trinity Desktop R14.0.4, using tde-trinity metapackage. On cold startup, with default configuration, it uses only 200 mb. of RAM (x64 bit. machine). Very lightwieght (i think). :D
OS: Debian Buster / WM: Awesome
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Re: RAM comparison thread

Postby NFT5 » 2016-12-27 20:21

AMD FX6300 with 8GB RAM, MATE & Marco.

Code: Select all
chris@BOSSDESK:~$ free -m
             total       used       free     shared    buffers     cached
Mem:          7972        816       7155         18         40        316
-/+ buffers/cache:        460       7512
Swap:        15943          0      15943
chris@BOSSDESK:~$ free -m
             total       used       free     shared    buffers     cached
Mem:          7972       1724       6247         26        103        728
-/+ buffers/cache:        893       7079
Swap:        15943          0      15943
chris@BOSSDESK:~$ free -m
             total       used       free     shared    buffers     cached
Mem:          7972       4973       2998         32        120       1534
-/+ buffers/cache:       3318       4654
Swap:        15943          0      15943
chris@BOSSDESK:~$


First is on clean boot.

Second is with:
Firefox 45.5 with 2 tabs open
OpenOffice Writer with a 2 page document open
VLC playing an MP3
MATE Terminal
Dolphin file manager

Third is more like I usually run:
Firefox with 2 tabs open
MATE Terminal
Dolphin file manager
WinXP running in Virtualbox with a database open and 2GB RAM allocated to that VM
Thunderbird open

Chews up the RAM pretty quick and I've been using Win7 Pro in another VM which has 4GB allocated so really starting to think about upping RAM to 16GB. Swap is on an SSD so doesn't penalise me too much at present when it is used.
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Re: RAM comparison thread

Postby Head_on_a_Stick » 2017-01-02 18:39

wizard10000 wrote:slim

That project is dead upstream and the display manager doesn't handle systemd user sessions correctly, this can cause problems (if you use systemd).

I would recommend LightDM instead.

Or https://bbs.archlinux.org/viewtopic.php ... 6#p1680406 :D
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