System Monitor versus 'top'

r00ster · 06-26-2013, 08:22 PM

I recently upgraded to Deb 7. In running 'top' and the KDE Sys Mon simultaneously, I get significantly different system info outputs. The reason I'm querying is that I'm experiencing system freezes and I'm trying to identify the cause.

In one instance, I was downloading an iso from the internet. The sys info for Memory differed greatly between the 2 utilities throughout the download.

'top' Mem showed 485 MiB being used
Sys Mon showed.. 264 MiB.

'top' Swap showed 359 MiB being used
Sys Mon showed.... 40 MiB.

Code:

Tasks: 122 total,   1 running, 121 sleeping,   0 stopped,   0 zombie
%Cpu(s):  3.8 us,  1.5 sy,  0.0 ni, 93.1 id,  1.5 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem:    505440 total,   485248 used,    20192 free,     3752 buffers
KiB Swap:   498008 total,    35960 used,   462048 free,   218512 cached

  PID USER      PR  NI  VIRT  RES  SHR S  %CPU %MEM    TIME+  COMMAND                      
 2429 root      20   0 56488  18m  11m S   1.5  3.7   1:05.02 Xorg                         
 3535 rooster   20   0  118m  32m  25m S   1.5  6.5   0:06.17 konsole                      
 3581 rooster   20   0  557m 137m  24m S   1.5 27.8   5:10.74 iceweasel                    
 3789 rooster   20   0  141m  39m  27m S   1.5  8.1   0:41.28 ksysguard                    
 1865 root      20   0  5180  368  256 S   0.8  0.1   0:00.09 dhclient                     
 3845 rooster   20   0  4508 1356  992 R   0.8  0.3   0:01.96 top                          
    1 root      20   0  2280  592  568 S   0.0  0.1   0:01.00 init                         
    2 root      20   0     0    0    0 S   0.0  0.0   0:00.00 kthreadd                     
    3 root      20   0     0    0    0 S   0.0  0.0   0:00.51 ksoftirqd/0   
<SNIP>

syg00 · 06-27-2013, 03:35 AM

Apples and oranges probably - subtract the "buffers" and "cached" and see how they line up.
Read linuxatemyram.com.

r00ster · 06-28-2013, 03:11 PM

Quote:

Originally Posted by syg00

Apples and oranges probably - subtract the "buffers" and "cached" and see how they line up.
Read linuxatemyram.com.

Not sure I understood what you meant by apples vs oranges. You could have done the math from the info I posted.

Quote:

'top' Mem showed 485248 being used. Minus buffers (3752) = 481496
Sys Mon showed 264 MiB.

'top' Swap showed 359 MiB being used. Minus cached (218512) = 182552
Sys Mon showed 40 MiB.

Converting to MiB
Mem: 481 'top' versus 264 Sys Mon

Swap: 182 'top' versus 40 Sys Mon

Those numbers don't seem to line up.

syg00 · 06-28-2013, 05:11 PM

Quote:

Originally Posted by r00ster

You could have done the math from the info I posted.

I did.
Like I said, subtract both.

r00ster · 06-29-2013, 03:28 AM

Quote:

Originally Posted by syg00

I did.
Like I said, subtract both.

Show your math...please...