Why zuul2 has a high delay under low pressure

[weitongming]

zuul version:2.1.3
architecture: zuul + tomcat7

solution 1:

Pressure measuring tool：jmeter with 1 thread
An tomcat http interface request takes almost 7ms , and the jmeter pressure measurement data is as follows：

When I forwarded this request through zuul2 ，i got almost 48ms latency .

what happend to zuul and why the latency of zuul is so high?

Situation has changed under high pressure:jmeter with 100 thread

tomcat:

proxy from zuul:

It seems that zuul did not cause any delay. But why zuul2 has a high delay under low pressure？

Can anyone tell me why and how to resolve this problem ,thansk.

[JustyouLs]

unbelievable!

[carl-mastrangelo]

Sorry, we don't know what your code is doing. You'll need to either provide a reproducible case, or gather profiling information on your server to debug this further.

[weitongming]

Actually，i just found an incredible thing.
In my zuul project ,there are several different filters for different uses。
If i override the needsBodyBuffered method extend from HttpInboundFilter ,like:

All the latency has gone , the jmeter pressure measurement data is as follows
proxy from zuul:

tomcat:

I can reproduce it with zuul 2.1.3 and any tomcat , it is amazing.

[carl-mastrangelo]

@weitongming As I said, you'll need to bring some more evidence to debug this further. You can use YourKit, or Async Profiler, or another profiler to see what is happening differently in your server.

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[github-actions]

This issue was closed because it has been stalled for 7 days with no activity.