screen -- long running process... cpu way up there!!!

[bruce]

Hey guys/gals!

Got a test that I'm running. The test has a remote box running an app
on a sep box (box2). Box2 has a screen session running so you can
access box2 and do a

 "screen -r Session1"

to access the running output.

All of this works as expected. However, when I examine the "top"
function in box2 I get the following. As you can see, it shows the
screen session running  at 99% of CPU!!!

So, my question I guess how can I resolve this!

The process/app running in the screen is essentially looping through
the lines in a file, and doing some processing... For the 1st 2K lines
or so the cpu doesn't appear to be doing anything weird.. in fact the
cpu data isn't even shown in the top process...

Thoughts/comments are welcome..

Thanks

[bruce]

On Thu, Apr 13, 2017 at 1:46 PM, bruce <badouglas(a)gmail.com&gt; wrote:
>  Hey guys/gals!
>
>  Got a test that I'm running. The test has a remote box running an app
>  on a sep box (box2). Box2 has a screen session running so you can
>  access box2 and do a
>
>   "screen -r Session1"
>
>  to access the running output.
>
>  All of this works as expected. However, when I examine the "top"
>  function in box2 I get the following. As you can see, it shows the
>  screen session running  at 99% of CPU!!!
>
>  So, my question I guess how can I resolve this!
>
>  The process/app running in the screen is essentially looping through
>  the lines in a file, and doing some processing... For the 1st 2K lines
>  or so the cpu doesn't appear to be doing anything weird.. in fact the
>  cpu data isn't even shown in the top process...
>
>  Thoughts/comments are welcome..
>
>  Thanks 
oops...

the screen output!!


[crawl_user@client-crawl-10d-dec-17-16-ssh-1gb-1 ~]$ top

top - 13:24:04 up 1 day,  9:50,  3 users,  load average: 1.00, 1.00, 1.00
Tasks:  89 total,   3 running,  86 sleeping,   0 stopped,   0 zombie
Cpu(s): 99.7%us,  0.0%sy,  0.0%ni,  0.0%id,  0.0%wa,  0.0%hi,  0.3%si,  0.0%st
Mem:   1020128k total,   899064k used,   121064k free,    83380k buffers
Swap:        0k total,        0k used,        0k free,   726792k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
12300 crawl_us  20   0  115m 1552  868 R 99.1  0.2 116:09.62 screen  
<<<<<<<<<
    7 root      20   0     0    0    0 R  0.7  0.0   8:29.61 events/0
22041 crawl_us  20   0 99.7m 1936  944 S  0.3  0.2   0:00.01 sshd
    1 root      20   0 19360 1412 1116 S  0.0  0.1   0:02.41 init
    2 root      20   0     0    0    0 S  0.0  0.0   0:00.01 kthreadd
    3 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/0