Can anyone explain more about vegeta report?

[contactparthshah]

Question

I ran test using vegeta and it has generated following report:

Requests      [total, rate]            200, 19.35
Duration      [total, attack, wait]    11.978051256s, 10.337022623s, 1.641028633s
Latencies     [mean, 50, 95, 99, max]  646.318364ms, 451.048775ms, 1.697808872s, 2.128540278s, 2.641028633s
Bytes In      [total, mean]            84733, 423.67
Bytes Out     [total, mean]            0, 0.00
Success       [ratio]                  93.50%
Status Codes  [code:count]             403:13  200:187
Error Set:
403 Forbidden

It will be good if anyone can help me to understand the report.

what to deduce from Duration [total, attack, wait] 11.978051256s, 10.337022623s, 1.641028633s ?

What to deduce from Latencies [mean, 50, 95, 99, max] 646.318364ms, 451.048775ms, 1.697808872s, 2.128540278s, 2.641028633s ?

what to deduce from Bytes Out [total, mean] 0, 0.00 ?

why Bytes Out is 0 ?

[tsenart]

what to deduce from Duration [total, attack, wait] 11.978051256s, 10.337022623s, 1.641028633s ?

• attack is the amount of time taken issuing all requests (total - wait)
• wait is the amount of time waiting for the response to the last request (total - attack)
• total is the total amount of time taken in the attack (attack + wait).

What to deduce from Latencies [mean, 50, 95, 99, max] 646.318364ms, 451.048775ms, 1.697808872s, 2.128540278s, 2.641028633s ?

• latency is the amount of time taken for a response to a request to be read (including the body).
• mean is the arithmetic mean / average of the latencies of all requests in an attack.
• 50, 95, 99 are the 50th, 95th an 99th percentiles, respectively, of the latencies of all requests in an attack. To understand more about why these are useful, I recommend this article from @tylertreat.
• max is the maximum latency of all requests in an attack.

what to deduce from Bytes Out [total, mean] 0, 0.00 ?
why Bytes Out is 0 ?

The BytesOut section describes summary metrics of the number of bytes sent out in request bodies during attacks. If you haven't defined a body, it will be zero.

[tsenart]

Please re-open if you have further questions.

[contactparthshah]

Thank you.

[jzaefferer]

Those details would be pretty useful in the readme! I'm still not quite sure what to make of this, after running with -duration=5s:

Duration [total, attack, wait] 26.126396344s, 4.982672s, 21.143724344s

[tsenart]

Hi @jzaefferer! Is the explanation in the comment above clear to you?

[jzaefferer]

Yeah, I think its fine. I didn't expect duration (of the test) to be limited to issuing requests, not for them to also be answered.

So yes, getting the info above into the readme, so others don't have to dig around closed issues for it, would be nice