长连接qps性能下降严重
Open
- Dominant language
- C
- Stars
- 166
- Forks
- 108
- PR merge metrics
- No merged PRs in 30d
Description
在开100个并发时，长期查询，性能感觉不大。
但是在开到1000个并发后，性能下降非常严重，从最初26万qps，压测一晚上。下降到7万多qps。
环境是percona5.5.18 centos6.6
Contributor guide
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Research direction
No source file, test, or entry point is named. Begin by reproducing the long-connection workload with 100 and 1000 concurrent queries on Percona 5.5.18/CentOS 6.6, comparing the initial 260k QPS with the overnight result; done means the cause is understood and sustained performance is verified.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c, centos, mysql
- Domain
- backend, performance
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100