java - Is execution time of same program for multiple time give different result? -


i have measure execution time of program using system.nanotime() function. every execution giving different execution time. have measure no of clock cycles multiplying processor speed. , due different execution time no of clock cycles coming different. don't know whether correct or doing wrong somewhere. plz suggest answer.

what doing wrong. line of questioning indicates not understand how processors , clock cycles work, @ rudimentary level.

there no way measure processor speed timing how long takes execute java program.


Comments

Post a Comment

Popular posts from this blog

matlab - Deleting rows with specific rules -

i got 20*3 cell array , need delete rows contains "137", "2" , "n:t" origin data: 't' '' '' 'np(*)' '' '' [ 137] '' '' [ 2] '' '' 'are' 'and' 'np(fcc_a1#1)' '' '' '1:t' [ 1200] [0.7052] '' [1.2051e+03] [0.7076] '' 'are' 'and' 'np(fcc_a1#3)' '' '' '2:t' [ 1200] [0.0673] '' [1.2051e+03] [0.0671] '' 'are' 'and' 'np(m23c6)' '' '' '3:t' [ 1200] [0.227...
Read more

php - MySQLi multi_query results for later use -

i using mysqli multi_query work several select statemets @ time. know how handle results, able use them later in code. example: <?php //connection stuff $query = "select name, surname database1;"; $query.= "select car, year, type database2 carid='1';"; $query.= "select product, price database3;"; if ($mysqli->multi_query($query)) { if($result = $mysqli->store_result()) { while($row = $result->fetch_row()) { --> here? } } } ?> <html> <div id='persona'> <?php foreach() { --> print name + surname } ?> </div> <div id='cars'> <?php foreach() { --> print car + year + type } ?> </div> <div id='product'> <?php foreach() { --> print product + price } ?> </div> </html> one more thing, prepared statements not possible when using multiple_query, right? there no benefit in putting unrelated queries in 1 multi ...
Read more