How is the 90 percentile calculated? Say I am having total
2000 transactions pumped to the system and I have 1800
passed and 200 failed. So the 90 pertile is considered from
the Passed transactions or (passed+failed) transactions?

Answer Posted / teju

90th percentile means 90%of all samples for particular
transaction performing at certain amount of time. If 90th%
is 10sec then 90% of that samples in the load test is 10
sec or less than of it.

U have 1800 passed transactions then arrange transactions
response time in ascending order, consider the response
time at 1620 sample becoz u need 90th percentile
(1800*90/100=1620).

(or) We have formula in excel percentile(n1...nn).
n1= passed samples for particular transaction

Is This Answer Correct ?    2 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Why do you create parameter?

535


difference between latency and transaction response time

1317


what is remote performance monitering?

1688


What is the significance of “vuser-init “?

803


What is the use lr_abort function?

750






What is manual correlation?

665


Hi all, I am new to Load Runner. I have run the load runner and i got analyzed reports/graphs. But i am very much confused about how to analyze those graphs. Can any one help me out this problem?

1568


How does loadrunner execute a performance scenario?

641


What are all the types of goals in goal-oriented scenario of load runner?

586


What protocols does loadrunner support?

640


How can we recording vuser scripts using vugen?

633


What are the four selection methods when choosing data from a data file?

732


Explain the difference between automatic correlation and manual correlation?

554


What is scenario default?

654


How is each step validated in the script?

637