bug: bug,Why does the overall average response time for long connections (keep-alive) exceed that for short connections (close) in performance tests?

[fairyqb]

Current Behavior

Is there an existing issue for this?

• I have searched the existing issues

aspsix version ($ aspsix version)

3.9.0

Current Behavior

Why does the overall average response time for long connections (keep-alive) exceed that for short connections (close) in performance tests? Why is this?

average response time:

14.01ms > 9.76ms (keepalive > close)

wrk:

iftop:

Expected Behavior

Long connections perform better than short connections.

Error Logs

no error

Steps to Reproduce

command:

1.post 500KB,connection:keepalive

wrk -t8 -c16 -d1m -s post.lua --latency --timeout 5s http://10.129.9.39:5074/user （apisix）

2. post 500KB,connection:close

wrk -t8 -c16 -d1m -s post_close.lua --latency --timeout 5s http://10.129.9.39:5074/user (apisix)

client post 500KB, server returned the string "ok".

post.lua

wrk.method = "POST"
wrk.headers["Content-Type"] = "application/json"
wrk.headers["Connection"] = "keep-alive"
local file = io.open("/root/tls/500kb.json", "rb")
wrk.body = file:read("*all")
file:close()

post_close.lua

wrk.method = "POST"
wrk.headers["Content-Type"] = "application/json"
wrk.headers["Connection"] = "close"
local file = io.open("/root/tls/500kb.json", "rb")
wrk.body = file:read("*all")
file:close()

Anything else?

500kb-json.zip

Environment

• APISIX version (run apisix version):3.9.0
• Operating system (run uname -a): 3.10.0-1160.59.1.el7.x86_64 GNU/Linux

[Baoyuantop]

Hi @fairyqb, can you use Nginx for testing? This will help quickly pinpoint the layer where the issue occurs.

[Baoyuantop]

If there is still a problem, please open it again.