View source for How to find user memory usage in linux

==How to find user memory usage in linux==

Finding out who/what is using the most memory is vital when trying to figure out is causing your system to run out of memory.

There are many ways to figure out what is using the most memory.

===1) Find out what is using the most memory===

 for USER in $(ps haux | awk '{print $1}' | sort -u); do ps haux | awk -v user=$USER '$1 ~ user { sum += $4} END { print user, sum; }' ; done

===2) Find out what is using the most memory in percent===

 TOTAL=$(free | awk '/Mem:/ { print $2 }'); for USER in $(ps haux | awk '{print $1}' | sort -u); do ps hux -U $USER | awk -v user=$USER -v total=$TOTAL '{ sum += $6 } END { printf "%s %.2f\n", user, sum / total * 100; }'; done

===3) If your system supports, try to install and use smem:===

 smem -u

 User     Count     Swap      USS      PSS      RSS 
 gdm          1        0      308      323      820 
 nobody       1        0      912      932     2240 
 root        76        0   969016  1010829  1347768 

or

 smem -u -t -k

 User     Count     Swap      USS      PSS      RSS 
 gdm          1        0   308.0K   323.0K   820.0K 
 nobody       1        0   892.0K   912.0K     2.2M 
 root        76        0   937.6M   978.5M     1.3G 
 ameskaas    46        0     1.2G     1.2G     1.5G