Analyze ram and cpu usage by an application or two

analyze-ram-and-cpu-usage.md

Get data in real time using top

top -b -d 0.1 | grep "app-1\|app-2"

You will get data with somethin like this:

 1442 pi        20   0  141152  71724  19588 S  68.3   7.6   0:00.71 prompter_sample
 1442 pi        20   0  142176  72588  19964 S  53.4   7.7   0:01.26 prompter_sample
 1442 pi        20   0  142176  72588  19964 S   3.9   7.7   0:01.30 prompter_sample
 1442 pi        20   0  142176  72588  19964 S  10.6   7.7   0:01.41 prompter_sample
 1442 pi        20   0  142176  72588  19964 S   8.7   7.7   0:01.50 prompter_sample
 1442 pi        20   0  142176  72588  19964 S  18.3   7.7   0:01.69 prompter_sample
 1442 pi        20   0  142176  72588  19964 S   3.9   7.7   0:01.73 prompter_sample
 1442 pi        20   0  142176  72848  19964 S  24.0   7.7   0:01.98 prompter_sample
 1442 pi        20   0  142176  72848  19964 S   2.9   7.7   0:02.01 prompter_sample
 1442 pi        20   0  142176  72848  19964 S  13.3   7.7   0:02.15 prompter_sample
 1442 pi        20   0  142176  72848  19964 S   2.9   7.7   0:02.18 prompter_sample
 1442 pi        20   0  142176  72848  19964 S  12.5   7.7   0:02.31 prompter_sample
 1442 pi        20   0  142176  72848  19964 S   1.0   7.7   0:02.32 prompter_sample
 1442 pi        20   0  142176  73112  19964 S  23.8   7.7   0:02.57 prompter_sample
 1442 pi        20   0  142176  73112  19964 S   2.9   7.7   0:02.60 prompter_sample
 1442 pi        20   0  142176  73112  19964 S  20.0   7.7   0:02.81 prompter_sample
 1442 pi        20   0  142176  73112  19964 S   3.8   7.7   0:02.85 prompter_sample
 1442 pi        20   0  142176  73112  19964 S   0.0   7.7   0:02.85 prompter_sample

Copy that data to file and we should replace white space with comma.

sed -e 's/\s\+/,/g' input-data.txt > modified.txt

You will get data something like this:

,1522,pi,20,0,141756,71408,19512,S,86.5,7.6,0:00.90,prompter_sample
,1522,pi,20,0,141756,71852,19636,S,34.3,7.6,0:01.25,prompter_sample
,1522,pi,20,0,141756,71852,19636,S,12.4,7.6,0:01.38,prompter_sample
,1522,pi,20,0,141756,71852,19636,S,7.7,7.6,0:01.46,prompter_sample
,1522,pi,20,0,141756,71852,19636,S,16.5,7.6,0:01.63,prompter_sample
,1522,pi,20,0,141756,71852,19636,S,2.9,7.6,0:01.66,prompter_sample
,1522,pi,20,0,141756,71852,19636,S,10.5,7.6,0:01.77,prompter_sample
,1522,pi,20,0,141756,71852,19636,S,2.9,7.6,0:01.80,prompter_sample
,1522,pi,20,0,141756,72112,19636,S,26.0,7.6,0:02.07,prompter_sample
,1522,pi,20,0,141756,72112,19636,S,4.9,7.6,0:02.12,prompter_sample
,1522,pi,20,0,141756,72112,19636,S,12.5,7.6,0:02.25,prompter_sample
,1522,pi,20,0,141756,72112,19636,S,5.8,7.6,0:02.31,prompter_sample
,1522,pi,20,0,141756,72376,19636,S,22.9,7.7,0:02.55,prompter_sample
,1522,pi,20,0,141756,72376,19636,S,11.7,7.7,0:02.67,prompter_sample
,1522,pi,20,0,141756,72376,19636,S,1.0,7.7,0:02.68,prompter_sample
,1522,pi,20,0,141756,72376,19636,S,16.3,7.7,0:02.85,prompter_sample
,1522,pi,20,0,141756,72376,19636,S,1.0,7.7,0:02.86,prompter_sample
,1522,pi,20,0,141756,72376,19636,S,1.0,7.7,0:02.87,prompter_sample

Now you can export it in excel to analise your application usage. For an example take an average about cpu and ram usage.