Why does ps -ef show four entries for chrome?

[James Mcphee]

Chrome runs each tab in a seperate process, and the same for plugins, etc,
though sometimes those are shared.  If you run ps -ef instead of top and
get the parent processid, they'd likely share a common parent.  You can
organize the output with H.  ps -efH and it'll group it in a tree format
based on parents, etc.

As for why you have multiple sessions, tty/# is the console, pts/# are
pseudo terminals.  Either ssh, gnome terms, whatever.  Depending on which
distro you're running, it may or may not show your sessions.  Systemd has a
better handle on logins, and will usually only show your gnome session and
hide any terms, while an older system that has to depend on utmp will do
it's best to give you "who" info, and that will lead to multiple entries.
Here's the thing, though.  In this case SystemD is causing who to lie to
you.  There are pty's and they're capable of doing things and the thing
intended to tell you, who, w, or whatever, is not telling you.  But I'll
stop before I get any further along that tangent.

On Wed, Nov 22, 2017 at 3:44 PM, <joe at actionline.com> wrote:

> Why does ps -ef show four entries for chrome?
>
> top - 15:39:19 up 117 days,  6:18,  3 users,  load average: 0.52, 0.53,
> 0.40
> Tasks: 254 total,   2 running, 252 sleeping,   0 stopped,   0 zombie
> %Cpu(s):  4.5 us,  1.4 sy,  0.0 ni, 94.0 id,  0.1 wa,  0.0 hi,  0.0 si,
> 0.0 st
> KiB Mem:   8056428 total,  6113388 used,  1943040 free,   261496 buffers
> KiB Swap:  1951740 total,  1479580 used,   472160 free.  2132628 cached Mem
>
>   PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
>  1954 joe       20   0 4950656 262716  63456 S  22.5  3.3   8718:50
> plasma-desktop
>  1180 root      20   0  406848 142360  91556 S   2.0  1.8   1731:43 Xorg
>  8319 joe       20   0 2536552  57272  40736 S   1.3  0.7   0:04.20 kwrite
>  8265 joe       20   0 1523732 198328      0 S   0.7  2.5 204:22.04 chrome
>  8385 joe       20   0  500772  39968  30976 S   0.7  0.5   0:00.32 konsole
>  8411 joe       20   0   25068   3020   2412 R   0.7  0.0   0:00.10 top
>  1947 joe       20   0 3271824 111492  13264 S   0.3  1.4 699:09.56 kwin
> 20472 joe       20   0 2773088   3460      0 S   0.3  0.0 342:53.07 chrome
> 23926 joe       20   0 1698316 146268      0 S   0.3  1.8 252:24.63 chrome
> 24818 joe       20   0 1681216 194792      0 S   0.3  2.4 205:45.48 chrome
> 26613 joe       20   0 1441312 305556   6452 S   0.3  3.8 117:09.59 chrome
>     1 root      20   0   33920   3244   1800 S   0.0  0.0   0:10.59 init
>
> == Also, why does "who" show 3 users when I am the only user logged on:
> t420: who
> joe      tty8         2017-07-28 09:20 (:0)
> joe      pts/8        2017-07-28 09:20 (:0)
> joe      pts/7        2017-11-22 15:42 (:0)
>
>
>
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-- 
James McPhee
jmcphe at gmail.com
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