Load testing microservice - bad results












0















I am struggling with the results of a load test of my api service.
The service is deployed on GCP. There are 2 instances running behind a nginx.



I am using spring boot 2.0 with default tomcat configuration.
The service is running inside a docker container with -Xmx768M



A request to the tested endpoint fetches a single row from a database and returns it.



My results:




ab -c 1 -n 1 /testapi




Requests per second: 15
Time per request: 63ms



ab -c 10 -n 100 /testapi




Requests per second: 102
Time per request: 97ms



ab -c 50 -n 100 /testapi




Requests per second: 95
Time per request: 522ms



ab -c 100 -n 100 /testapi




Requests per second: 93
Time per request: 1065ms



ab -c 200 -n 200 /testapi




Timeout


Worrying aspects:




  • Heap usage is rising after each test


  • At 99.99% heap usage I am getting slow responses until the container crashes with java.lang.OutOfMemoryError: Java heap space


  • I am able to ddos 2 instances of an API from a single laptop.



What am I doing wrong here? Does the tomcat configuration needs further tweaking? Are the JVM parameters wrong?



Thanks



EDIT tested code:



@ApiOperation(value="Get Device", response = Device.class, authorizations = {@Authorization(value = "Authorization")})
@RequestMapping(value="/device/commnr/{commnr}", method= RequestMethod.GET)
public DeferredResult<ResponseEntity> getDevice(@PathVariable String commnr) {

final DeferredResult<ResponseEntity> deferred = new DeferredResult<>();

HttpServletRequest request = getCurrentHttpRequest();

timer.schedule(new TimerTask() {
@Override
public void run() {
if(deferred.isSetOrExpired()) {
throw new RuntimeException();
} else {
User user = authenticationService.loginUser(request);

Device device = deviceService.findByCommNr(commnr);
if(!AuthTools.isUserDevice(device, user)) {
deferred.setResult(new ResponseEntity<>("Requested Device does not belong to user.", HttpStatus.FORBIDDEN));
}

if(device == null) {
deferred.setResult(new ResponseEntity<>(HttpStatus.NOT_FOUND));
}

deferred.setResult(new ResponseEntity<>(device, HttpStatus.OK));
}
}
}, 10);

return deferred;
}









share|improve this question

























  • Are you using Spring WebFlux?

    – Boris
    Nov 20 '18 at 17:08











  • I added the code from the tested method.

    – Alex Tbk
    Nov 20 '18 at 17:12











  • You should take and analyze a memory snapshot using tools like Memory Analyzer (MAT) or VisualVM. It's kind of hard to guess which class instances are leaking.

    – Selaron
    Nov 20 '18 at 19:04
















0















I am struggling with the results of a load test of my api service.
The service is deployed on GCP. There are 2 instances running behind a nginx.



I am using spring boot 2.0 with default tomcat configuration.
The service is running inside a docker container with -Xmx768M



A request to the tested endpoint fetches a single row from a database and returns it.



My results:




ab -c 1 -n 1 /testapi




Requests per second: 15
Time per request: 63ms



ab -c 10 -n 100 /testapi




Requests per second: 102
Time per request: 97ms



ab -c 50 -n 100 /testapi




Requests per second: 95
Time per request: 522ms



ab -c 100 -n 100 /testapi




Requests per second: 93
Time per request: 1065ms



ab -c 200 -n 200 /testapi




Timeout


Worrying aspects:




  • Heap usage is rising after each test


  • At 99.99% heap usage I am getting slow responses until the container crashes with java.lang.OutOfMemoryError: Java heap space


  • I am able to ddos 2 instances of an API from a single laptop.



What am I doing wrong here? Does the tomcat configuration needs further tweaking? Are the JVM parameters wrong?



Thanks



EDIT tested code:



@ApiOperation(value="Get Device", response = Device.class, authorizations = {@Authorization(value = "Authorization")})
@RequestMapping(value="/device/commnr/{commnr}", method= RequestMethod.GET)
public DeferredResult<ResponseEntity> getDevice(@PathVariable String commnr) {

final DeferredResult<ResponseEntity> deferred = new DeferredResult<>();

HttpServletRequest request = getCurrentHttpRequest();

timer.schedule(new TimerTask() {
@Override
public void run() {
if(deferred.isSetOrExpired()) {
throw new RuntimeException();
} else {
User user = authenticationService.loginUser(request);

Device device = deviceService.findByCommNr(commnr);
if(!AuthTools.isUserDevice(device, user)) {
deferred.setResult(new ResponseEntity<>("Requested Device does not belong to user.", HttpStatus.FORBIDDEN));
}

if(device == null) {
deferred.setResult(new ResponseEntity<>(HttpStatus.NOT_FOUND));
}

deferred.setResult(new ResponseEntity<>(device, HttpStatus.OK));
}
}
}, 10);

return deferred;
}









share|improve this question

























  • Are you using Spring WebFlux?

    – Boris
    Nov 20 '18 at 17:08











  • I added the code from the tested method.

    – Alex Tbk
    Nov 20 '18 at 17:12











  • You should take and analyze a memory snapshot using tools like Memory Analyzer (MAT) or VisualVM. It's kind of hard to guess which class instances are leaking.

    – Selaron
    Nov 20 '18 at 19:04














0












0








0








I am struggling with the results of a load test of my api service.
The service is deployed on GCP. There are 2 instances running behind a nginx.



I am using spring boot 2.0 with default tomcat configuration.
The service is running inside a docker container with -Xmx768M



A request to the tested endpoint fetches a single row from a database and returns it.



My results:




ab -c 1 -n 1 /testapi




Requests per second: 15
Time per request: 63ms



ab -c 10 -n 100 /testapi




Requests per second: 102
Time per request: 97ms



ab -c 50 -n 100 /testapi




Requests per second: 95
Time per request: 522ms



ab -c 100 -n 100 /testapi




Requests per second: 93
Time per request: 1065ms



ab -c 200 -n 200 /testapi




Timeout


Worrying aspects:




  • Heap usage is rising after each test


  • At 99.99% heap usage I am getting slow responses until the container crashes with java.lang.OutOfMemoryError: Java heap space


  • I am able to ddos 2 instances of an API from a single laptop.



What am I doing wrong here? Does the tomcat configuration needs further tweaking? Are the JVM parameters wrong?



Thanks



EDIT tested code:



@ApiOperation(value="Get Device", response = Device.class, authorizations = {@Authorization(value = "Authorization")})
@RequestMapping(value="/device/commnr/{commnr}", method= RequestMethod.GET)
public DeferredResult<ResponseEntity> getDevice(@PathVariable String commnr) {

final DeferredResult<ResponseEntity> deferred = new DeferredResult<>();

HttpServletRequest request = getCurrentHttpRequest();

timer.schedule(new TimerTask() {
@Override
public void run() {
if(deferred.isSetOrExpired()) {
throw new RuntimeException();
} else {
User user = authenticationService.loginUser(request);

Device device = deviceService.findByCommNr(commnr);
if(!AuthTools.isUserDevice(device, user)) {
deferred.setResult(new ResponseEntity<>("Requested Device does not belong to user.", HttpStatus.FORBIDDEN));
}

if(device == null) {
deferred.setResult(new ResponseEntity<>(HttpStatus.NOT_FOUND));
}

deferred.setResult(new ResponseEntity<>(device, HttpStatus.OK));
}
}
}, 10);

return deferred;
}









share|improve this question
















I am struggling with the results of a load test of my api service.
The service is deployed on GCP. There are 2 instances running behind a nginx.



I am using spring boot 2.0 with default tomcat configuration.
The service is running inside a docker container with -Xmx768M



A request to the tested endpoint fetches a single row from a database and returns it.



My results:




ab -c 1 -n 1 /testapi




Requests per second: 15
Time per request: 63ms



ab -c 10 -n 100 /testapi




Requests per second: 102
Time per request: 97ms



ab -c 50 -n 100 /testapi




Requests per second: 95
Time per request: 522ms



ab -c 100 -n 100 /testapi




Requests per second: 93
Time per request: 1065ms



ab -c 200 -n 200 /testapi




Timeout


Worrying aspects:




  • Heap usage is rising after each test


  • At 99.99% heap usage I am getting slow responses until the container crashes with java.lang.OutOfMemoryError: Java heap space


  • I am able to ddos 2 instances of an API from a single laptop.



What am I doing wrong here? Does the tomcat configuration needs further tweaking? Are the JVM parameters wrong?



Thanks



EDIT tested code:



@ApiOperation(value="Get Device", response = Device.class, authorizations = {@Authorization(value = "Authorization")})
@RequestMapping(value="/device/commnr/{commnr}", method= RequestMethod.GET)
public DeferredResult<ResponseEntity> getDevice(@PathVariable String commnr) {

final DeferredResult<ResponseEntity> deferred = new DeferredResult<>();

HttpServletRequest request = getCurrentHttpRequest();

timer.schedule(new TimerTask() {
@Override
public void run() {
if(deferred.isSetOrExpired()) {
throw new RuntimeException();
} else {
User user = authenticationService.loginUser(request);

Device device = deviceService.findByCommNr(commnr);
if(!AuthTools.isUserDevice(device, user)) {
deferred.setResult(new ResponseEntity<>("Requested Device does not belong to user.", HttpStatus.FORBIDDEN));
}

if(device == null) {
deferred.setResult(new ResponseEntity<>(HttpStatus.NOT_FOUND));
}

deferred.setResult(new ResponseEntity<>(device, HttpStatus.OK));
}
}
}, 10);

return deferred;
}






performance spring-boot tomcat google-cloud-platform load-testing






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 20 '18 at 17:11







Alex Tbk

















asked Nov 20 '18 at 17:06









Alex TbkAlex Tbk

517522




517522













  • Are you using Spring WebFlux?

    – Boris
    Nov 20 '18 at 17:08











  • I added the code from the tested method.

    – Alex Tbk
    Nov 20 '18 at 17:12











  • You should take and analyze a memory snapshot using tools like Memory Analyzer (MAT) or VisualVM. It's kind of hard to guess which class instances are leaking.

    – Selaron
    Nov 20 '18 at 19:04



















  • Are you using Spring WebFlux?

    – Boris
    Nov 20 '18 at 17:08











  • I added the code from the tested method.

    – Alex Tbk
    Nov 20 '18 at 17:12











  • You should take and analyze a memory snapshot using tools like Memory Analyzer (MAT) or VisualVM. It's kind of hard to guess which class instances are leaking.

    – Selaron
    Nov 20 '18 at 19:04

















Are you using Spring WebFlux?

– Boris
Nov 20 '18 at 17:08





Are you using Spring WebFlux?

– Boris
Nov 20 '18 at 17:08













I added the code from the tested method.

– Alex Tbk
Nov 20 '18 at 17:12





I added the code from the tested method.

– Alex Tbk
Nov 20 '18 at 17:12













You should take and analyze a memory snapshot using tools like Memory Analyzer (MAT) or VisualVM. It's kind of hard to guess which class instances are leaking.

– Selaron
Nov 20 '18 at 19:04





You should take and analyze a memory snapshot using tools like Memory Analyzer (MAT) or VisualVM. It's kind of hard to guess which class instances are leaking.

– Selaron
Nov 20 '18 at 19:04












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