How do I check a process' memory usage?

[Todd Chester]

Hi All,

FC27, x64

I have a 32 bit program running on a server that may be
running out of memory.

From the command line, how do I check this?

Many thanks,
-T

This web site only made my head spin:

https://stackoverflow.com/questions/131303/how-to-measure-actual-memory-usag...

[fred roller]

On Fri, Mar 23, 2018 at 10:32 PM, Todd Chester 
wrote:
> Hi All,
>
> FC27, x64
>
> I have a 32 bit program running on a server that may be
> running out of memory.
>
> From the command line, how do I check this?
>
> Many thanks,
> -T
>
> This web site only made my head spin:
>
> https://stackoverflow.com/questions/131303/how-to-measure-
> actual-memory-usage-of-an-application-or-process
>
> users mailing list -- [e-mail]
> To unsubscribe send an email to [e-mail]

The command:

top

should give you a live break down of processes to include % of memory for a
process.

[Todd Chester]

On 03/23/2018 08:55 PM, fred roller wrote:
> On Fri, Mar 23, 2018 at 10:32 PM, Todd Chester <[e-mail] 
> > wrote:
> Hi All,
>
> FC27, x64
>
> I have a 32 bit program running on a server that may be
> running out of memory.
>
>  From the command line, how do I check this?
>
> Many thanks,
> -T
>
> This web site only made my head spin:
>
> https://stackoverflow.com/questions/131303/how-to-measure-actual-memory-usage-of-an-application-or-process
> <https://stackoverflow.com/questions/131303/how-to-measure-actual-memory-usage-of-an-application-or-process>
> The command:
>
> top
>
> should give you a live break down of processes to include % of memory 
> for a process.

Hi Fred,

Thank you!

Look like it is getting close to the harry edge of a 32 bit program.

-T

$ top -o %MEM

from `man top`:

2. %MEM  --  Memory Usage (RES)
       A task's currently used share of available physical memory.

17. RES  --  Resident Memory Size (KiB)
       The non-swapped physical memory a task is using.

36. VIRT  --  Virtual Memory Size (KiB)
       The  total  amount  of  virtual  memory  used by the task.
       It includes all code, data and shared libraries plus pages
       that have  been swapped out and pages that have been mapped
       but not used.

%Cpu(s): 11.8 us,  8.8 sy,  0.0 ni, 54.3 id, 23.5 wa,  0.7 hi,  0.8 si, 
0.0 st
KiB Mem : 32710736 total,  5083192 free,  6250780 used, 21376764 buff/cache
KiB Swap: 16385020 total, 16059160 free,   325860 used. 25605772 avail Mem

PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
15160 root      20   0 4112444 3.672g  11784 S   2.0 11.8  40:44.60 
redacted.bin

%MEM -- Memory Usage (RES)
     11.8% (0.118 * 3271036 /1e6 = 3.59818096 GiB)

RES -- Resident Memory Size (KiB)
     3.672  GiB

VIRT -- Virtual Memory Size (KiB):
     4112444 KiB  (4.112444 GiB)

[Wolfgang Pfeiffer]

On Fri, 23 Mar 2018 23:55:33 -0400
fred roller  wrote:
> The command:
>
> top
>
> should give you a live break down of processes to include % of memory for a
> process.

Or maybe even 'htop' - which will you give (among other things) the
option to move down through  - as it seems - all processes that are
currently running - search for them, nice or even stop them via a
visible menu ...
https://en.wikipedia.org/wiki/Htop

[fred roller]

> Or maybe even 'htop'

looks nice, will have to play with it. Thanks for the pointer.

[Tim]

Allegedly, on or about 24 March 2018, Wolfgang Pfeiffer sent:
> Or maybe even 'htop' - which will you give (among other things) the
> option to move down through  - as it seems - all processes that are
> currently running - search for them, nice or even stop them via a
> visible menu ...
> https://en.wikipedia.org/wiki/Htop

Out of curiosity, I tried that.  There's a list of F keys down the
bottom, some of which I can't use, because the terminal window uses
them for itself (e.g. F1 for MATE help, F10 to open the MATE terminal
menus, and navigate them with the cursor keys, instead of F1 for htop
help, and F10 to quit htop).  So, to quit htop, I had to close the
terminal window.

[Patrick O'Callaghan]

On Mon, 2018-03-26 at 13:53 +1030, Tim wrote:
> Allegedly, on or about 24 March 2018, Wolfgang Pfeiffer sent:
> > Or maybe even 'htop' - which will you give (among other things) the
> > option to move down through  - as it seems - all processes that are
> > currently running - search for them, nice or even stop them via a
> > visible menu ...
> > https://en.wikipedia.org/wiki/Htop
>
> Out of curiosity, I tried that.  There's a list of F keys down the
> bottom, some of which I can't use, because the terminal window uses
> them for itself (e.g. F1 for MATE help, F10 to open the MATE terminal
> menus, and navigate them with the cursor keys, instead of F1 for htop
> help, and F10 to quit htop).  So, to quit htop, I had to close the
> terminal window.

Or just type 'q' ...

poc

[Tim]

Tim:
> > So, to quit htop, I had to close the terminal window.

Patrick O'Callaghan:
> Or just type 'q' ...

/me smacks head, "doh!"

[Wolfgang Pfeiffer]

On Mon, 26 Mar 2018 13:53:12 +1030
Tim  wrote:
> Allegedly, on or about 24 March 2018, Wolfgang Pfeiffer sent:
> > Or maybe even 'htop' - which will you give (among other things) the
> > option to move down through  - as it seems - all processes that are
> > currently running - search for them, nice or even stop them via a
> > visible menu ...
> > https://en.wikipedia.org/wiki/Htop
>
> Out of curiosity, I tried that.  There's a list of F keys down the
> bottom, some of which I can't use, because the terminal window uses
> them for itself (e.g. F1 for MATE help, F10 to open the MATE terminal
> menus, and navigate them with the cursor keys, instead of F1 for htop
> help, and F10 to quit htop).  So, to quit htop, I had to close the
> terminal window.

Alt-{F1,F10} to reach the menus?

Or did you try good old xterm? Works like a charm here - and "here" is
awesome window manager plus gdm. Plus gnome software, that I run
inside awesome. Plus: I have (nearly permanently) running htop in a tmux
window/pane, in a gnome-terminal. Inside this terminal running tmux all
F-keys for htop are available except F1: for F1 I need the combo
<Alt>-<F1> ..

Plus: Inside awesome I run tmux fullscreen and with the gnome title
being switched off  - just in case this might be important.

Good luck!

[Jon LaBadie]

On Mon, Mar 26, 2018 at 01:53:12PM +1030, Tim wrote:
> Allegedly, on or about 24 March 2018, Wolfgang Pfeiffer sent:
> > Or maybe even 'htop' - which will you give (among other things) the
> > option to move down through  - as it seems - all processes that are
> > currently running - search for them, nice or even stop them via a
> > visible menu ...
> > https://en.wikipedia.org/wiki/Htop
>
> Out of curiosity, I tried that.  There's a list of F keys down the
> bottom, some of which I can't use, because the terminal window uses
> them for itself (e.g. F1 for MATE help, F10 to open the MATE terminal
> menus, and navigate them with the cursor keys, instead of F1 for htop
> help, and F10 to quit htop).  So, to quit htop, I had to close the
> terminal window.

I'm also in the same Mate env and just tried htop.

Mouse clicks can also be used on the F fields.

jl