模型服务并发请求处理能力监控方案
监控指标配置
# Prometheus监控配置
metrics:
- name: model_request_duration_seconds
help: 模型请求处理时间分布
type: histogram
buckets: [0.01, 0.05, 0.1, 0.2, 0.5, 1.0, 2.0, 5.0]
- name: model_concurrent_requests
help: 当前并发请求数
type: gauge
- name: model_request_rate
help: 请求速率(每秒)
type: counter
告警配置方案
# AlertManager规则
groups:
- name: model-concurrency-alerts
rules:
- alert: 高并发请求告警
expr: model_concurrent_requests > 1000
for: 5m
labels:
severity: warning
annotations:
summary: "模型服务并发请求数过高"
description: "当前并发数{{ $value }},超过阈值1000"
- alert: 响应时间异常
expr: histogram_quantile(0.95, sum(rate(model_request_duration_seconds_bucket[5m])) by (le)) > 2.0
for: 3m
labels:
severity: critical
annotations:
summary: "模型响应时间超过阈值"
description: "95%响应时间{{ $value }}秒,超过阈值2.0秒"
实施步骤
- 在模型服务中集成Prometheus客户端库
- 配置Kubernetes部署文件添加监控端口
- 创建Prometheus服务发现配置
- 部署AlertManager告警规则
可复现验证
# 启动测试请求
ab -n 1000 -c 50 http://model-service:8080/predict
# 查看监控指标
curl http://prometheus:9090/api/v1/query?query=model_concurrent_requests

讨论