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Re: Debian 9.2 amd64 Xfce lock screen -> 100 %CPU by lightdm-gt+

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On Wed, Oct 11, 2017 at 11:13:52PM -0700, David Christensen wrote:
>On 10/11/17 21:43, davidson wrote:
>>On Wed, 11 Oct 2017, David Christensen wrote:
[cut]
>>>If I lock the screen and SSH in from another machine, 'top' says:
>...
>>> PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ 
>>>COMMAND
>>>7473 lightdm   20   0  587348  51332  25584 R  94.6  2.5   0:14.52 
>>>lightdm-gt+
>...
>>
>>AFAICT, that command name is truncated. In interactive top, you can
>>scroll with right-arrow, to view the rest of the name. With that
>>information, your search results might improve.
>>
>>Could be lightdm-gtk-greeter? Or something else, I guess.
>...
>
>Thanks for the tip.  Making my Xfce Terminal wider, I see more of the 
>name, but it's still truncated (as are several others with long 
>names). RTFM top(1) -- I can use the -b (batch mode), -n 1 (number of 
>iterations), and -w (output-width-override) options and redirect the 
>output to file:
>
>2017-10-11 22:51:04 dpchrist@tinkywinky ~
>$ top -b -n 1 -w
>top - 22:52:43 up 15:45,  2 users,  load average: 0.98, 0.53, 0.27
>Tasks: 232 total,   3 running, 229 sleeping,   0 stopped,   0 zombie
>%Cpu(s): 13.7 us,  2.3 sy,  0.2 ni, 83.4 id,  0.4 wa,  0.0 hi,  0.0 
>si, 0.0 st
>KiB Mem :  2043196 total,   535484 free,   780640 used,   727072 buff/cache
>KiB Swap:  1952764 total,  1744820 free,   207944 used.   980428 avail Mem
>
>  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
> 9957 lightdm   20   0  587348  51196  25444 R  88.2  2.5   2:41.03 
>lightdm-gtk-gre
>...

According to StackOverflow[1], process names can only be 16 bytes long. 
So, while the executable may be called 'lightdm-gtk-greeter', the 
process in which that executable runs will be 'lightdm-gtk-gre'.


[1] 
https://stackoverflow.com/questions/23534263/what-is-the-maximum-allowed-limit-on-the-length-of-a-process-name#23534499


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Re: Debian 9.2 amd64 Xfce lock screen -> 100 %CPU by lightdm-gt+ Darac Marjal <mailinglist@darac.org.uk> - 2017-10-13 00:20 +0200

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