openresty / openresty/lua-nginx-module
lj_str_new high CPU usague when performance testing
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- Dominant language
- C
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Description
I found lj_str_new high cpu usague
-
env
OpenResty-1.15.8，OS：CentOS6，CPU: Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz, 15 worker
http request 8k ~10k，10w qps -
lj_str_new high cpu usague when access_by_lua of ngx_lua
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First steps
- Read the whole issue, then the project's contributing guide.
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- Open a pull request that references the issue number.
Research direction
No source file or test is named. Start by reproducing the reported OpenResty and ngx_lua access_by_lua workload, then inspect the CPU profile around lj_str_new. Done means explaining the high CPU usage with a reproducible finding and documenting the affected configuration or workload.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c, lua
- Domain
- backend, performance
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100