How to make JMeter output graphs from log-file?

Question

I need to generate the same graphs as JMeter but from my app (C, VB, etc):

1. Response Times Over Time

2. Response Times Distribution

3. Response Times Percentile

How can I do this? I need a calculation algorithm.

I have a CSV log-file from JMeter with following columns:

timeStamp, elapsed, label, responseCode, responseMessage, threadName, dataType, success, bytes, grpThreads, allThreads, Latency

Answer 1

1. Response Times Over Time

   1. Divide all rows to groups by one minute. Use timeStamp for this.

   2. Get average of elapsed from each group. It will be Y value.

   3. Y value is a time with one minute step for each average value.

2. Response Times Distribution

   1. Sort all rows by elapsed field.

   2. Count rows with value of elapsed field between 0 and 100. The count will be value of first column of chart.

   3. A count of rows with value of elapsed field between 100 and 200 will be a value of chart's second column, etc.

3. Response Times Percentile

   1. X - numbers from 0 to 100.

   2. Y - according percentile value for elapsed fields.