top states CPU >100% usage?

LinuxAssailant · 12-07-2018, 08:01 AM

I am running a Wyse thin client as my low power Slackware box, but I am seeing some weird stuff.

Code:

top - 06:49:06 up 4 days, 15:59,  2 users,  load average: 1.83, 1.40, 0.72
Tasks: 216 total,   3 running, 213 sleeping,   0 stopped,   0 zombie
%Cpu(s): 65.2 us, 26.3 sy,  0.2 ni,  4.5 id,  0.0 wa,  0.0 hi,  3.8 si,  0.0 st
MiB Mem :   1713.7 total,    142.2 free,   1260.2 used,    311.4 buff/cache
MiB Swap:      0.0 total,      0.0 free,      0.0 used.    210.1 avail Mem 

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND    
 3176 root      20   0 2504652 556248  96184 R 168.0  31.7   3:06.72 seamonkey  
...

168% CPU usage? Really?

This happens on most browsers just running a speedtest on http://speedtest.net.

I am showing I only get about 1-2.7mbps, when my Windows box tests at 82/59mbps.

Not sure if I need to do anything different on this 2-core Wyse thin client, and this was a move of an SSD from another single-core WYSE thin client.

ehartman · 12-07-2018, 04:14 PM

Quote:

Originally Posted by LinuxAssailant

168% CPU usage? Really?[/B]

This happens on most browsers just running a speedtest

That can happen on a multi-core CPU: say 90% on the first core, 78% on the 2nd.
You didn't say anything about the cpu OF your thin client, but your speed test is probably using ONE core at max speed and in the meantime the other one(s) do other things.
I think in "top" you can use the "1" (digit, not letter l) command to split the summary into separate cores (cpu's it calls it).

bassmadrigal · 12-07-2018, 04:40 PM

In addition to ehartman's post, if you're seeing such a drastic difference in speeds between Windows and Slackware, we should start out with what hardware you have inside the box, including the network adapter and what driver/module it is using and how you're connecting to the internet (network manager, wicd, rc.inet1, etc). There might be some tweaks we can do to speed things up.