[TUHS] Overgrown ffox (was: The Unix shell: a 50-year view)

[Steffen Nurpmeso]

Derek Fawcus wrote in
 <YOcE3fre5cUTt6Br at clarinet.employees.org>:
 |On Thu, Jul 08, 2021 at 08:46:53AM +0200, Tomasz Rola wrote:
 |> On Wed, Jul 07, 2021 at 08:50:51PM +0000, Michael Kjörling wrote:
 |>> On 7 Jul 2021 20:32 +0200, from rtomek at ceti.pl (Tomasz Rola):
 |>>> An excerpt from my ps:
 |>>> 
 |>>> xxxon    12331 12.5 20.4 5898360 2519640 ?     TNsl Mar29 18278:11 \
 |>>> firefox-esr
 |>> 
 |>> I'm going to stick my neck out here by saying that the VSZ and RSS
 |>> values reported by ps, at least for Firefox, are largely meaningless.
 |
 |Or does it depend upon the OS?  From a mac instance:
 ...
 |So there are defintitly issues in mapping the current use of various types
 |of memory to a simple display format.

Another thing is that, when i used it, Mac command line tools did
not take care about exit status (as in "succeed though they should
not") or know about job signals.
But it is not only Mac, take iwd again, iwctl('s display handling)
definetely is buggy in respect to handling of SIGCONT after
a TSTP.  (Ie the screen starts scrolling line-wise but no display
is ever refreshed.)

Regarding the thing, here this seems pretty much fine for RSS.

  root      1454  0.0  0.0   7912  2480 ?        S    21:03   0:00 /bin/bash /x/pub/box-web.sh browse firefox
  root      1456  0.0  0.0   3012  2032 ?        S    21:03   0:00 /usr/bin/doas -u steffen /box.firefox
  steffen   1457  0.0  0.0   2384   700 ?        S    21:03   0:00 /bin/sh - /box.firefox
  steffen   1458 31.2  3.7 3029004 299700 ?      Sl   21:03   0:04 firefox --no-remote
  steffen   1545  4.0  1.3 2421200 108196 ?      Sl   21:03   0:00 /usr/lib/firefox/firefox-bin -contentproc -childID 1 -isForBrowser -prefsLen 1 -prefMapSize 244806 -parentBuildID 20210614221319 -appdir /usr/lib/f
  steffen   1583  2.2  1.1 2412124 89636 ?       Sl   21:03   0:00 /usr/lib/firefox/firefox-bin -contentproc -childID 2 -isForBrowser -prefsLen 4909 -prefMapSize 244806 -parentBuildID 20210614221319 -appdir /usr/li
  steffen   1636  0.6  0.7 2382844 59560 ?       Sl   21:03   0:00 /usr/lib/firefox/firefox-bin -contentproc -childID 3 -isForBrowser -prefsLen 5602 -prefMapSize 244806 -parentBuildID 20210614221319 -appdir /usr/li

Yeah i use --no-remote because otherwise firefox will find its
other-box instances via X cookies (i do not have Wayland here).
I deem it a critical error that firefox then starts up even though
the ~/.mozilla/XXX profile is a totally different one, but on the
IRC we just ended like this.

Btw i use

  setup_cgroup() {
  #return
    [ -e /sys/fs/cgroup/cgroup.procs ] || return
    [ -d /sys/fs/cgroup/_box_web ] && return

    (
      umask 0022
      mkdir /sys/fs/cgroup/_box_web || return
    )

    echo 1-3 > /sys/fs/cgroup/_box_web/cpuset.cpus
    echo 1 > /sys/fs/cgroup/_box_web/cpu.weight
    echo 300 > /sys/fs/cgroup/_box_web/pids.max
    echo 1000000000 > /sys/fs/cgroup/_box_web/memory.high
  }

on this box for box-web.sh, and i can read all my newspapers and
browse the web, even youtube.
If i open to many tabs, they start crashing.  This mostly seems
due to the pids.max, however, i already increased this from 250.

What _i_ find interesting is that for the first time i really get
impressive scheduling feedback.  This cpu.weight=1 can indeed
cause the browser to be delayed entirely for minutes, dependent on
the other tasks on the system.  I mean really, totally, entirely.
I was impressed by reading the sched manual once i came back to
Linux two years ago, but seeing cpu.weight=1 in action _like
that_, really impressive.

Btw .. happy to be on the other side of the spectrum

  steffen   1251  0.0  0.0  11240  6184 tty1     S    Jul05   0:06 cwm
  steffen   1261  0.0  0.1  19284  9096 ?        Ss   Jul05   1:11 st -n stgrey
  steffen   1262  0.0  0.0   8588  3896 pts/0    Ss+  Jul05   0:00 tmux a
  steffen   1334  0.0  1.1  94088 88680 ?        Ss   Jul05   1:25 tmux a
  steffen   5058  0.0  0.1  14672  8712 pts/1    S+   Jul05   0:11 s-nail -Aich
  steffen  30448  0.0  0.2 100800 19052 pts/7    Sl+  20:50   0:00 irssi
  steffen   1340  0.0  0.0  11848  6840 pts/6    Ss+  Jul05   0:00 vim -u /home/steffen/.vimrc

It all fits a single Terminal.app (if not taking into account tmux
history), even if online.  (Granted st does not have the history
patch, and firefox not running.)

--steffen
|
|Der Kragenbaer,                The moon bear,
|der holt sich munter           he cheerfully and one by one
|einen nach dem anderen runter  wa.ks himself off
|(By Robert Gernhardt)