[GitHub] [apisix] johndudo commented on issue #6829: help request: plugin limit-req works not correctly when burst&rate are larger than 3000.

[GitBox <gi...@apache.org>]

johndudo commented on issue #6829:
URL: https://github.com/apache/apisix/issues/6829#issuecomment-1096259789

   (1) work normal case
   plugin settting:
   
   "limit-req": {
         "burst": 5000,
         "disable": false,
         "key": "server_addr",
         "key_type": "var",
         "nodelay": false,
         "rate": 1000,
         "rejected_code": 503
       }
   
   **running result:**
   [tomcat@TYCOSUTOMAPI02 wrk-4.1.0]$ ./wrk -t 4 -c 100 -d 10s http://XXXX:9080/test/getjson --latency
   Running 10s test @ http://XXXX:9080/test/getjson
     4 threads and 100 connections
     Thread Stats   Avg      Stdev     Max   +/- Stdev
       Latency    97.34ms    8.15ms 113.64ms   97.39%
       Req/Sec   256.52     18.60   480.00     93.50%
     Latency Distribution
        50%   98.67ms
        75%   99.84ms
        90%  100.82ms
        99%  103.51ms
     10227 requests in 10.01s, 14.85MB read
   Requests/sec:   1021.84
   Transfer/sec:      1.48MB
   
   期望QPS 1000, 实际 1021.84
   
   
   
   (2) work wrong case
   plugin settting:
   
   "limit-req": {
         "burst": 5000,
         "disable": false,
         "key": "server_addr",
         "key_type": "var",
         "nodelay": false,
         "rate": 3000,
         "rejected_code": 503
       }
   
   **running result:**
   [tomcat@TYCOSUTOMAPI02 wrk-4.1.0]$ ./wrk -t 4 -c 100 -d 10s http://XXXX:9080/test/getjson --latency
   Running 10s test @ http://XXXX:9080/test/getjson
     4 threads and 100 connections
     Thread Stats   Avg      Stdev     Max   +/- Stdev
       Latency    17.60ms   12.86ms 133.63ms   83.90%
       Req/Sec     1.50k   703.36     3.01k    67.92%
     Latency Distribution
        50%   13.10ms
        75%   27.00ms
        90%   31.39ms
        99%   70.52ms
     59767 requests in 10.01s, 86.81MB read
   Requests/sec:   5970.67
   Transfer/sec:      8.67MB
   
   期望QPS 3000, 实际 5970.67
   
   


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