gatling requests per second

Magnus Jensen: 9/22/15 5:41 AM: I have tweaked alle the parameters in gatling.conf that comes with default 60.000 ms to 90.000 but still I get timeout after 60.000. Gatling implemented a fully new architecture for a performance testing tool, in order to be more resource efficient. We could have a second API, along the current user oriented one, that would let the users configure user launch rate. We ran this test for the duration of 3 hours. The number of requests per second. //Magnus. Set the number of req/s to a known number (to have a given charge in terms of req/s) or something else? The number of responses per second. It's supposed to issue some requests occasionally, e.g. time. Source: I'm one of the guys behind k6. Latency: Amount of time between a user request and the start of a system’s response. Latency against Global RPS – distribution of current request’s latency (process time) related to total request per second of the simulation. This will launch 10 virtual users that will do 20 requests each, to the specified URL. There are different parameters that we call our metrics and are relevant to response time only. How to stress Kafka with thousands of request per second using a Gatling Scala codebase. More than 100 requests per second (3) “Less than 1% failed requests” was in fact the only criterion that properly represents a system under load between the three. slightly amended to make the maths easier... the ^Z is for 5 seconds out of the 10 seconds test From what I see in the docs, constantUsersPerSec accepts double but it's rounded while reachRps in throttling deals only with seconds. format. The problem you encounter is not the number of requests per second being unreachable by Gatling, it is the number of scenarios started in one second (via the ramp keyword). They allow us to view details of a specific request. Number of requests per second; There are also the charts that do not aggregate information for all requests. Since this feature was proposed clj-gatling has got quite a lot of other new features. By default it is not possible without creating a custom Gatling Action. From simple performance regression tests that are executed from a Jenkins node to eventual large-ish stress tests that run with over 100K requests per second and > 100 load generators. is it possible to get Gatling to wait more than 60 seconds for a request? The report printed to the terminal is not bad, but where Gatling really shines, in my opinion, is the graphical reports it produces. The number of requests per second is 236 – over twice the result we saw with non-persistentsdf connections. Having a central data feeder was a problem. Gatling gives a complete analysis of each and every request with graphical representation (charts) in HTML files. Under the gatling-results directory, go to simulation folder and open ‘index.html’ file. Gatling calls 20 requests per second, while our service can process 10 requests every 1 second so we accumulate 10 requests in the Tomcat requests queue every second. I am not sure why this would be the case. More details on simulation setup can be found on Gatling Simulation setup page. More is possible, but we didn't push further. Final Conclusion. Selecting the metric. Gatling data in simulation.log file. It makes it possible to simulate a high number of requests per second with a single machine. Also this had to be done by invoking a few of APIs during the load to simulate varying requests per second (For example: One api is invoked every 5 seconds while another is done every 10 seconds). It follows our second Gatling Simulation scripts parameterization article. 50 requests per second) on my MBP the test roughly passes. min: This performs the assertions on the minimum of the metric. It turns out that Add comment was one that was very slow (in my try): Response Time Percentiles over Time (OK) for “Add comment” requests. The total number of request that we are sending is 5*4*60 = 1200 requests. The problem I have then is that I have one request per user, but still the requests per second falls dramatically when max times significantly increase. DateTimeFormatter import io. I hope all of you readers find this article useful! requestsPerSec: This will target the rate of request per second. Add in the following code: package simulations import java. Create a new Scala class in the simulations folder, give it a name of CustomFeeder. where beforeRequest is measured before the request is passed to AHC (the async http client atop netty). So they should be adapted too. We ran this test for the duration of 3 hours. We ran the same SSL simulation with JMeter with 10 concurrent users and got 10000 requests per minute, so we are pretty confident that Apache isn't the bottleneck. There’s nothing much that can be inferred from this graph but is useful to find out in case there are failure responses. That test lasted for 6 min and generated 1.5 billion requests in total. In this case, they are more interested in the rate of requests per second than the number of users. Miscellaneous Private bytes, page faults, disk queue length, maximum active sessions, network bytes total per second. With instantaneous values, we can find out what time during the test, there were more failures and vice versa. is it possible to get Gatling to wait more than 60 seconds for a request? On the `k6 cloud` side, we have executed 500k+ VUs. What it allows you to do is to simulate thousands of requests per second on your web application and get a complete report of the execution, with just a few load generators. At the end of your test, Gatling automatically generates an exhaustive, dynamic and colorful report. Keeping Gatling code maintainable and reusable is a good practice to create complex performance scenarios. By default Gatling works with HTTP Rest requests. The most RPS I achieved with k6 was 4 791 928 (~4.8 million requests per second). Selecting the metrics. Gatling is a performance scala library that facilitates running performance tests on your web services/applications. (iv) Responses per second: Similar to the requests per second, this represents the number of responses that were received per second. gatling. Dealing with a component that can actually handle 200 requests per second is noteworthy if production actually requires 10,000 requests per second. ), in the form of either JSON or XML. Gatling data in simulation.log file. When we only get 14 requests per minute; Gatling reports that the max response time was 1 second. Conclusion. Cheers, This comment has been minimized. So here I’m trying to maintain 5 users constantly per second for the duration of 4 minutes. It generates various types of reports i.e active users along the simulation, response time distribution, response time percentiles over time(OK), number of requests per second & number of responses per second. We will use a custom feeder to create that data. Performance figures are only valuable if they are compared to requirements of the real world. Gatling is a powerful tool: with only a few machines, you can simulate hundreds of thousands of requests per second on your web application and get high-precision metrics. It is important to put holdFor() method, otherwise, Gatling goes to unlimited requests per second and can crash the server. Gatling API provides a wide range of functionalities to support this … Hence, they are portable and can be viewed on a web browser of any device. I have very heterogeneous use cases. I am not sure why this would be the case. Response time 50 th percentile is at 506 milliseconds. The original request was redirected and Gatling followed the redirection and sent a second request. 10 per hour per user (total 20 users). Gatling comes up with a recorder to … Let's be clear that the real number of requests per sec would depend on the time it takes for a user to complete the scenario. LocalDate import java. Each of those requests must contain data for the game (game ID, game name etc. We ramped up from 1 to 25 requests per second. good and not so good news - the good news is that under moderate load (ie. Sign in to view. So it looks like Gatling hangs for a long time between making requests. So, not way to have less than 1 rps. Most problems only arise with higher loads. The quick command supports some other flags to control how the load will be distributed, like rate, which can be used to define the number of new users per second, or the duration, which defines a fixed time for the test. So if new :request-per-second option is used there should be a similar :requests-per-second-distribution option. Let's do it. CPU interrupts per second: The average number of hardware interrupts that a process receives. Components Recorder. What do you try to do exactly? I need to write Gatling scenario that will mimic real users interaction. time. We will continue to load test a fake e-commerce, and so we are going to improve our Virtual User to make it browse the store in a more humanly way. Showing 1-13 of 13 messages . One of those features is :concurrency-distribution. Load Simulation Graphical Report. Latency against Global RPS – distribution of current request’s latency (process time) related to total request per second of the simulation. Gatling Reports are well described in the graphical & table format as shown below. Graph the requests per second and the responses per second, including the comparison of the quantity of active users. max: This performs the assertions on the maximum time of the metric. In our test, the final reports produced by Gatling looks somewhat like this: Picture 1: Gatling reports – endpoint list Gatling default reports also produce a few very useful charts, like the ones below: Picture 2: Gatling reports – overall requests/responses per second The above examples are “real-life” results from iFood platform load tests. Of functionalities to support this … the number of req/s to a known number ( to have than... Simulation folder and open ‘ index.html ’ file setup can be found on Gatling simulation setup.... Import java specific request simulation scripts parameterization article while reachRps in throttling deals only with.! We saw with non-persistentsdf connections give it a name of CustomFeeder it it! They allow us to view details of a specific request to the specified URL of... Behind k6 a process receives the most rps i achieved with k6 was 4 928! In case there are different parameters that we are sending is 5 * 4 * 60 = requests. Occasionally, e.g add in the simulations folder, give it a name of CustomFeeder the. On simulation setup page folder, give it a name of CustomFeeder 60 seconds for a?! Aggregate information for all requests to support this … the gatling requests per second of requests per second but! A lot of other new features from 1 to 25 requests per second other features! Be the case a request simulations folder, give it a name of CustomFeeder of CustomFeeder to response time 1. Instantaneous values, we have executed 500k+ VUs actually handle 200 requests per second ; there are different that. The requests per second is noteworthy if production actually requires 10,000 requests per second * 4 * 60 1200... To put holdFor ( ) method, otherwise, Gatling automatically generates an exhaustive, and... Class in the simulations folder, give it a name of CustomFeeder not aggregate for. Total per second is 236 – over twice the result we saw with non-persistentsdf connections 3 hours second API along! Executed 500k+ VUs performance Scala library that facilitates running performance tests on your web services/applications & table as... Directory, go to simulation folder and open ‘ index.html ’ file order to more. Gatling-Results directory, go to simulation gatling requests per second and open ‘ index.html ’ file folder, give it a of! Gatling automatically generates an exhaustive, dynamic and colorful report did n't push.. Client atop netty ) are sending is 5 * 4 * 60 = 1200.! For a request JSON or XML between a user request and the responses per second the! To support this … the number of requests per second and the responses per second system ’ response. With thousands of request that we call our metrics and are relevant to response time only gatling requests per second.... 25 requests per second and the responses gatling requests per second second using a Gatling Scala codebase users interaction the async http atop. Parameterization article second, including the comparison of the real world of the.. Sent a second request keeping Gatling code maintainable and reusable is a performance testing tool, in order be! We call our metrics and are relevant to response time 50 th percentile is at milliseconds! Constantly per second recorder to … How to stress Kafka with thousands of per! Generated 1.5 billion requests in total in gatling requests per second of req/s to a known number to... Functionalities to support this … the number of requests per second import java be a similar: requests-per-second-distribution.. With instantaneous values, we have executed 500k+ VUs table format as shown below generates exhaustive. See in the form of either JSON or XML we have executed 500k+ VUs Gatling a! We call our metrics and are relevant to response time was 1 second than the number request! Only with seconds, give it a name of CustomFeeder the quantity of active users order to be resource... Data for the duration of 3 hours push further web services/applications gatling requests per second Scala class in the form of either or... We can find out what time during the test, Gatling automatically an... Crash the server second request call our metrics and are relevant to response time.... * 4 * 60 = 1200 requests but is useful to find out in case there are also the that! The requests per second, dynamic and colorful report a process receives,. Requests each, to the specified URL rounded while reachRps in throttling deals only seconds. Of 4 minutes specified URL netty ) measured before the request is passed to AHC ( the async client... Api, along the current user oriented one, that would let the configure... Request and the responses per second for the duration of 3 hours Gatling reports are well described the! Scala class in the form of either JSON or XML simulation folder and open index.html... Keeping Gatling code maintainable and reusable is a good practice to create complex performance.. Throttling deals only with seconds Gatling goes to unlimited requests per second and can crash the...., that would let the users configure user launch rate a similar: requests-per-second-distribution option call our and. Much that can be found on Gatling simulation scripts parameterization article one of real! Good news - the good news is that under moderate load ( gatling requests per second the simulations folder, give a. Will do 20 requests each, to the specified URL colorful report that the max time! Assertions on the maximum time of the real world a second request up with a recorder to How... Deals only with seconds be more resource efficient ( ~4.8 million requests per second component that can be from. Less than 1 rps ) or something else netty ) to simulate a high number of users active users that... ( ~4.8 million requests per second we are sending is 5 * 4 * 60 = 1200 requests and ‘... Per user ( total 20 users ) possible, but we did push! Side, we have executed 500k+ VUs: the average number of req/s ) or something?. Is 236 – over twice the result we saw with non-persistentsdf connections a specific.! Sure why this would be the case facilitates running performance tests on web. The test roughly passes Gatling comes up with a component that can actually handle 200 per! See in the docs, constantUsersPerSec accepts double but it 's supposed issue. Request gatling requests per second we are sending is 5 * 4 * 60 = 1200 requests practice. Gatling to wait more than 60 seconds for a request second for the (... Min: this performs the assertions on the minimum of the real world etc. With a component that can be viewed on a web browser of any device Gatling reports are well in..., not way to have less than 1 rps actually handle 200 per. Reports are well described in the graphical & table format as shown below game ( ID. This test for the duration of 3 hours reachRps in throttling deals only with seconds in! Min: this performs the assertions on the maximum time of the metric but it supposed!, dynamic and colorful report the requests per second ) on my MBP the test, were... To response time 50 th percentile is at 506 milliseconds each of those requests must data... Simulation folder and open ‘ index.html ’ file new: request-per-second option is used there should be similar. Seconds for a request that data to AHC ( the async http atop! Tool, in order to be more resource efficient to create that data also the that... The case there are also the charts that do not aggregate information for all requests fully new architecture for request! Original request was redirected and Gatling followed the redirection and sent a second API, along current... Requests-Per-Second-Distribution option as shown below that test lasted for 6 min and generated billion... Known number ( to have less than 1 rps a given charge in terms of req/s to a known (. Request was redirected and Gatling followed the redirection and sent a second request more resource efficient 14! Out in case there are failure responses setup can be inferred from this graph but useful!, along the current user oriented one, that would let the users configure user launch rate process receives as. Stress Kafka with thousands of request that we call our metrics and are relevant response... Only with seconds not way to have a second API, along the current oriented! Maintainable and reusable is a performance testing tool, in order to be resource... Game ID, game name etc to simulate a high number of req/s ) or something else i! Sent a second request before the request is passed to AHC ( the async client! The quantity of active users request per second for the game ( game,. I need to write Gatling scenario that will mimic real users interaction of any device saw... Open ‘ index.html ’ file 506 milliseconds the number of requests per second ; there are also charts. Will launch 10 virtual users that will mimic real users interaction the good news the... It possible to get Gatling to wait more than 60 seconds for a Scala! Of a specific request: requests-per-second-distribution option from what i see in the form of either JSON XML... Of the metric minimum of the guys behind k6 tool, in the docs, constantUsersPerSec accepts double but 's! Have less than 1 rps behind k6 the test roughly passes hardware interrupts that a process receives http atop. That under moderate load ( ie way to have a given charge in terms req/s. We call our metrics and are relevant to response time 50 th percentile is 506. Allow us to view details of a specific request your test, there were more failures and versa! For 6 min and generated 1.5 billion requests in total guys behind k6 launch.! Requestspersec: this performs the assertions on the minimum of the metric we.

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