最完整指南:twitter-roberta-base-sentiment-latest日志分析与监控最佳实践

最完整指南:twitter-roberta-base-sentiment-latest日志分析与监控最佳实践

读完你将获得

  • 情感分析模型(Sentiment Analysis Model)部署全流程监控方案
  • 9种异常检测指标与实时告警配置
  • 性能优化指南:从200ms到50ms的推理加速实践
  • 生产环境故障排查决策树与案例库
  • 完整监控代码库与自动化脚本(Python+Prometheus+Grafana)

1. 项目背景与监控必要性

1.1 模型定位与生产挑战

twitter-roberta-base-sentiment-latest是CardiffNLP团队开发的基于RoBERTa架构的情感分析模型(Sentiment Analysis Model),在1.24亿条推文语料上预训练,专为社交媒体文本优化。其核心优势在于:

  • 三分类体系:Negative(0)/Neutral(1)/Positive(2)
  • 适配Twitter特有表达方式(表情符号、俚语、话题标签)
  • 与Hugging Face Transformers生态无缝集成

生产环境部署面临三大核心挑战: mermaid

1.2 监控体系建设目标

建立覆盖"数据-模型-系统"三层的监控体系,实现:

  • 实时检测:异常响应时间<5秒
  • 根因定位:故障诊断准确率>90%
  • 性能优化:资源利用率提升30%
  • 模型保障:精度下降预警提前24小时

2. 环境配置与依赖管理

2.1 基础环境要求

依赖项最低版本推荐版本监控关键点
Python3.73.9.10解释器内存占用
transformers4.13.04.28.1模型加载时间
torch1.7.01.11.0+cu113CUDA上下文切换
tensorflow2.5.02.8.0会话创建耗时
numpy1.19.51.21.6数组运算效率

2.2 监控工具链部署

# 基础监控组件
pip install prometheus-client==0.14.1
pip install python-dotenv==1.0.0
pip install requests==2.27.1

# 可视化依赖
pip install matplotlib==3.5.2
pip install seaborn==0.11.2

# 安装Prometheus(Ubuntu示例)
sudo apt-get update && sudo apt-get install -y prometheus
sudo systemctl enable prometheus && sudo systemctl start prometheus

3. 关键监控指标设计

3.1 系统级监控指标

指标名称类型阈值范围告警级别
CPU利用率Gauge0-100%>80%警告,>95%严重
内存使用量Gauge动态>85%警告,>95%严重
GPU显存占用Gauge0-100%>90%警告
推理延迟Histogram基准值±3σ>200ms警告
请求吞吐量Counter-<5 QPS警告

3.2 模型级监控指标

# 模型性能监控指标定义
MODEL_METRICS = {
    "inference_latency": Histogram('model_inference_latency_ms', '推理延迟(毫秒)', 
                                  buckets=[10, 50, 100, 200, 300, 500]),
    "prediction_distribution": Gauge('model_prediction_distribution', '预测分布', 
                                    ['label']),
    "confidence_score": Summary('model_confidence_score', '预测置信度', 
                               ['label']),
    "sequence_length": Histogram('input_sequence_length', '输入序列长度',
                                buckets=[10, 20, 50, 100, 200, 300])
}

3.3 数据质量监控指标

指标ID描述监控频率异常处理
DQ-001输入文本长度分布1分钟95分位>300字符告警
DQ-002特殊字符占比1分钟>20%触发清洗
DQ-003空输入频率实时连续5次触发熔断
DQ-004重复请求率5分钟>15%启动缓存

4. 监控实现方案

4.1 基础监控代码框架

import time
import logging
from prometheus_client import start_http_server, Gauge, Histogram, Counter
from transformers import pipeline
import torch

# 配置日志
logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
    handlers=[logging.FileHandler("model_monitor.log"),
              logging.StreamHandler()]
)
logger = logging.getLogger("sentiment-monitor")

# 初始化Prometheus指标
INFERENCE_LATENCY = Histogram('sentiment_inference_latency_ms', '推理延迟(毫秒)')
REQUEST_COUNT = Counter('sentiment_requests_total', '总请求数', ['status', 'label'])
MODEL_LOAD_TIME = Gauge('sentiment_model_load_seconds', '模型加载时间')
MEMORY_USAGE = Gauge('sentiment_memory_usage_mb', '内存使用量')

class MonitoredSentimentPipeline:
    def __init__(self, model_path='./', device=-1):
        self.model_path = model_path
        self.device = device
        self.pipeline = None
        self._load_model()
        
    @MODEL_LOAD_TIME.time()
    def _load_model(self):
        """带监控的模型加载"""
        start_time = time.time()
        try:
            self.pipeline = pipeline(
                "sentiment-analysis",
                model=self.model_path,
                tokenizer=self.model_path,
                device=self.device
            )
            logger.info(f"模型加载成功,耗时{time.time()-start_time:.2f}秒")
        except Exception as e:
            logger.error(f"模型加载失败: {str(e)}", exc_info=True)
            raise
            
    @INFERENCE_LATENCY.time()
    def predict(self, text):
        """带监控的预测方法"""
        try:
            # 输入验证
            if not isinstance(text, str) or len(text.strip()) == 0:
                REQUEST_COUNT.labels(status='invalid', label='none').inc()
                raise ValueError("无效输入文本")
                
            # 执行预测
            result = self.pipeline(text)[0]
            
            # 更新计数器
            REQUEST_COUNT.labels(status='success', label=result['label']).inc()
            
            # 记录内存使用
            import psutil
            process = psutil.Process()
            MEMORY_USAGE.set(process.memory_info().rss / 1024 / 1024)
            
            return result
            
        except Exception as e:
            REQUEST_COUNT.labels(status='error', label='none').inc()
            logger.error(f"预测失败: {str(e)}")
            raise

4.2 模型性能监控实现

def monitor_performance(predict_func, test_cases, interval=60):
    """
    定期运行性能测试用例
    
    参数:
        predict_func: 预测函数
        test_cases: 测试用例列表
        interval: 测试间隔(秒)
    """
    performance_history = {
        'latency': [],
        'throughput': [],
        'accuracy': []  # 需要有标注的测试集
    }
    
    while True:
        start_time = time.time()
        results = []
        
        # 执行批量测试
        for text, expected_label in test_cases:
            try:
                result = predict_func(text)
                results.append({
                    'text': text,
                    'predicted': result['label'],
                    'expected': expected_label,
                    'score': result['score'],
                    'timestamp': time.time()
                })
            except Exception as e:
                logger.error(f"测试用例失败: {text}, 错误: {str(e)}")
        
        # 计算性能指标
        duration = time.time() - start_time
        throughput = len(results) / duration
        
        # 计算准确率(如果有预期标签)
        accuracy = None
        if all('expected' in r for r in results):
            correct = sum(1 for r in results if r['predicted'] == r['expected'])
            accuracy = correct / len(results) if results else 0
        
        # 记录指标
        performance_history['latency'].append(duration*1000/len(results))
        performance_history['throughput'].append(throughput)
        if accuracy is not None:
            performance_history['accuracy'].append(accuracy)
        
        # 日志记录
        logger.info(f"性能测试: 延迟={duration*1000/len(results):.2f}ms, "
                   f"吞吐量={throughput:.2f}qps, 准确率={accuracy:.4f}" if accuracy else "")
        
        # 检查阈值
        if len(performance_history['latency']) > 5:  # 5次滑动窗口
            avg_latency = sum(performance_history['latency'][-5:])/5
            if avg_latency > 200:  # 阈值根据实际情况调整
                logger.warning(f"性能下降警告: 平均延迟{avg_latency:.2f}ms超过阈值")
                # 发送告警通知(邮件/Slack等)
                
        time.sleep(interval)

# 启动监控线程示例
if __name__ == "__main__":
    # 初始化带监控的情感分析管道
    sentiment_pipeline = MonitoredSentimentPipeline(device=0)  # 使用GPU(0)
    
    # 定义测试用例集(文本, 预期标签)
    test_cases = [
        ("Covid cases are increasing fast!", "Negative"),
        ("I love this new feature!", "Positive"),
        ("The weather is nice today.", "Neutral"),
        # 添加更多测试用例...
    ]
    
    # 启动性能监控线程
    import threading
    monitor_thread = threading.Thread(
        target=monitor_performance,
        args=(sentiment_pipeline.predict, test_cases),
        kwargs={'interval': 300},  # 每5分钟测试一次
        daemon=True
    )
    monitor_thread.start()
    
    # 启动Prometheus metrics端点
    start_http_server(8000)
    logger.info("监控服务器启动在端口8000")
    
    # 保持主进程运行
    while True:
        time.sleep(3600)

5. 日志系统设计与实现

5.1 日志配置最佳实践

def configure_logging(log_dir='./logs', max_size=10*1024*1024, backup_count=10):
    """
    配置结构化日志系统
    
    参数:
        log_dir: 日志目录
        max_size: 单个日志文件大小上限
        backup_count: 保留备份数
    """
    import os
    import logging.handlers
    
    # 创建日志目录
    os.makedirs(log_dir, exist_ok=True)
    
    # 定义日志格式
    log_format = logging.Formatter(
        '%(asctime)s - %(name)s - %(levelname)s - %(process)d - %(thread)d - %(message)s'
    )
    
    # 根日志配置
    root_logger = logging.getLogger()
    root_logger.setLevel(logging.INFO)
    
    # 控制台处理器
    console_handler = logging.StreamHandler()
    console_handler.setFormatter(log_format)
    root_logger.addHandler(console_handler)
    
    # 文件处理器(按大小轮转)
    file_handler = logging.handlers.RotatingFileHandler(
        os.path.join(log_dir, 'sentiment_service.log'),
        maxBytes=max_size,
        backupCount=backup_count,
        encoding='utf-8'
    )
    file_handler.setFormatter(log_format)
    root_logger.addHandler(file_handler)
    
    # 错误日志单独处理
    error_handler = logging.handlers.RotatingFileHandler(
        os.path.join(log_dir, 'sentiment_errors.log'),
        maxBytes=max_size,
        backupCount=backup_count,
        encoding='utf-8'
    )
    error_handler.setLevel(logging.ERROR)
    error_handler.setFormatter(log_format)
    root_logger.addHandler(error_handler)
    
    logger.info(f"日志系统初始化完成,日志目录: {os.path.abspath(log_dir)}")

5.2 关键事件日志记录规范

def log_prediction_event(text, result, user_id=None, session_id=None):
    """
    记录预测事件详情
    
    参数:
        text: 输入文本
        result: 预测结果
        user_id: 可选,用户ID
        session_id: 可选,会话ID
    """
    # 敏感信息过滤
    sanitized_text = text.replace('\n', ' ').replace('\r', '')
    if len(sanitized_text) > 200:
        sanitized_text = sanitized_text[:200] + '...'
    
    # 构建日志上下文
    context = {
        'text': sanitized_text,
        'label': result['label'],
        'score': round(result['score'], 4),
        'timestamp': time.time()
    }
    
    # 添加可选上下文
    if user_id:
        context['user_id'] = user_id
    if session_id:
        context['session_id'] = session_id
    
    # 分级日志记录
    if result['score'] < 0.6:  # 低置信度预测
        logger.warning(f"低置信度预测: {context}")
    else:
        logger.info(f"预测事件: {context}")

def log_model_event(event_type, details=None):
    """
    记录模型生命周期事件
    
    参数:
        event_type: 事件类型(startup/shutdown/reload/error)
        details: 事件详情字典
    """
    event_map = {
        'startup': logging.INFO,
        'shutdown': logging.INFO,
        'reload': logging.WARNING,
        'error': logging.ERROR,
        'performance_drop': logging.WARNING,
        'config_change': logging.INFO
    }
    
    log_level = event_map.get(event_type, logging.INFO)
    event_details = {
        'event_type': event_type,
        'timestamp': time.time(),
        'details': details or {}
    }
    
    logger.log(log_level, f"模型事件: {event_details}")

6. 异常检测与告警机制

6.1 多级异常检测策略

class AnomalyDetector:
    def __init__(self, window_size=100, z_threshold=3.0):
        """
        初始化异常检测器
        
        参数:
            window_size: 滑动窗口大小
            z_threshold: Z-score阈值
        """
        self.window_size = window_size
        self.z_threshold = z_threshold
        self.metrics_history = {
            'latency': [],
            'score': [],
            'sequence_length': []
        }
        
    def update_metrics(self, latency, score, sequence_length):
        """更新指标历史记录"""
        self._update_history('latency', latency)
        self._update_history('score', score)
        self._update_history('sequence_length', sequence_length)
        
    def _update_history(self, metric_name, value):
        """更新单个指标的历史记录"""
        self.metrics_history[metric_name].append(value)
        if len(self.metrics_history[metric_name]) > self.window_size:
            self.metrics_history[metric_name].pop(0)
    
    def detect_anomalies(self):
        """检测异常并返回结果"""
        anomalies = {}
        
        for metric, values in self.metrics_history.items():
            if len(values) < self.window_size:
                continue  # 窗口未填满
            
            # 计算Z-score
            mean = np.mean(values)
            std = np.std(values)
            
            if std == 0:  # 避免除以零
                continue
                
            z_scores = [(x - mean) / std for x in values]
            current_z = z_scores[-1]
            
            # 判断异常
            if abs(current_z) > self.z_threshold:
                anomalies[metric] = {
                    'value': values[-1],
                    'mean': mean,
                    'std': std,
                    'z_score': current_z,
                    'is_anomaly': True
                }
        
        return anomalies if anomalies else None

6.2 告警通知系统实现

import smtplib
from email.mime.text import MIMEText
from email.utils import formatdate

class AlertSystem:
    def __init__(self, config):
        """
        初始化告警系统
        
        参数:
            config: 告警配置字典
        """
        self.smtp_server = config.get('smtp_server')
        self.smtp_port = config.get('smtp_port', 587)
        self.smtp_username = config.get('smtp_username')
        self.smtp_password = config.get('smtp_password')
        self.recipients = config.get('recipients', [])
        self.alert_thresholds = config.get('thresholds', {})
        self.alert_history = []
        self.cooldown_period = config.get('cooldown_seconds', 300)  # 5分钟冷却
        
    def send_alert(self, alert_type, message, severity='warning'):
        """
        发送告警通知
        
        参数:
            alert_type: 告警类型
            message: 告警消息
            severity: 严重程度(warning/critical)
        """
        # 检查冷却时间
        current_time = time.time()
        for alert in reversed(self.alert_history):
            if (alert['type'] == alert_type and 
                current_time - alert['timestamp'] < self.cooldown_period):
                logger.info(f"告警冷却中: {alert_type}")
                return
                
        # 记录告警历史
        self.alert_history.append({
            'type': alert_type,
            'timestamp': current_time,
            'severity': severity
        })
        
        # 保持历史记录大小
        if len(self.alert_history) > 100:
            self.alert_history.pop(0)
            
        # 构建邮件内容
        subject = f"[{'CRITICAL' if severity == 'critical' else 'WARNING'}] {alert_type}"
        body = f"""
        告警时间: {time.strftime('%Y-%m-%d %H:%M:%S')}
        告警类型: {alert_type}
        严重程度: {severity}
        详细信息: {message}
        
        请及时处理!
        """
        
        # 发送邮件
        try:
            msg = MIMEText(body, 'plain', 'utf-8')
            msg['Subject'] = subject
            msg['From'] = self.smtp_username
            msg['To'] = ', '.join(self.recipients)
            msg['Date'] = formatdate(localtime=True)
            
            with smtplib.SMTP(self.smtp_server, self.smtp_port) as server:
                server.starttls()
                server.login(self.smtp_username, self.smtp_password)
                server.send_message(msg)
                
            logger.info(f"告警邮件发送成功: {alert_type}")
        except Exception as e:
            logger.error(f"告警邮件发送失败: {str(e)}", exc_info=True)

7. 可视化监控面板搭建

7.1 Prometheus配置

# prometheus.yml 配置示例
global:
  scrape_interval: 15s
  evaluation_interval: 15s

rule_files:
  # - "alert.rules.yml"

alerting:
  alertmanagers:
  - static_configs:
    - targets:
      # - alertmanager:9093

scrape_configs:
  - job_name: 'sentiment-model'
    static_configs:
      - targets: ['localhost:8000']  # 我们的模型监控端点

7.2 Grafana面板配置

  1. 安装Grafana:
sudo apt-get install -y grafana
sudo systemctl enable grafana-server && sudo systemctl start grafana-server
  1. 导入监控面板:
{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": "-- Grafana --",
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
  "editable": true,
  "gnetId": null,
  "graphTooltip": 0,
  "id": 1,
  "iteration": 1652389426433,
  "links": [],
  "panels": [
    {
      "collapsed": false,
      "datasource": null,
      "gridPos": {
        "h": 1,
        "w": 24,
        "x": 0,
        "y": 0
      },
      "id": 20,
      "panels": [],
      "title": "系统监控",
      "type": "row"
    },
    // 添加完整面板配置...
  ],
  "refresh": "5s",
  "schemaVersion": 30,
  "style": "dark",
  "tags": [],
  "templating": {
    "list": []
  },
  "time": {
    "from": "now-6h",
    "to": "now"
  },
  "timepicker": {},
  "timezone": "",
  "title": "情感分析模型监控",
  "uid": "sentiment-model-monitor",
  "version": 1
}

7.3 自定义监控仪表盘

def generate_performance_report(history, output_path='./reports'):
    """
    生成性能报告图表
    
    参数:
        history: 性能历史数据
        output_path: 报告输出路径
    """
    import matplotlib.pyplot as plt
    import os
    
    os.makedirs(output_path, exist_ok=True)
    timestamp = time.strftime('%Y%m%d_%H%M%S')
    
    # 创建延迟趋势图
    plt.figure(figsize=(12, 6))
    plt.plot(history['latency'], label='推理延迟(ms)')
    plt.axhline(y=200, color='r', linestyle='--', label='阈值')
    plt.title('推理延迟趋势')
    plt.xlabel('样本序号')
    plt.ylabel('延迟(ms)')
    plt.legend()
    plt.grid(True)
    latency_path = os.path.join(output_path, f'latency_trend_{timestamp}.png')
    plt.savefig(latency_path)
    plt.close()
    
    # 创建吞吐量图表
    plt.figure(figsize=(12, 6))
    plt.bar(range(len(history['throughput'])), history['throughput'])
    plt.title('系统吞吐量')
    plt.xlabel('测试周期')
    plt.ylabel('QPS')
    plt.grid(True, axis='y')
    throughput_path = os.path.join(output_path, f'throughput_{timestamp}.png')
    plt.savefig(throughput_path)
    plt.close()
    
    logger.info(f"性能报告生成完成: {output_path}")
    return {
        'latency_chart': latency_path,
        'throughput_chart': throughput_path,
        'timestamp': timestamp
    }

8. 性能优化与故障排查

8.1 性能瓶颈分析方法

mermaid

8.2 常见故障排查决策树

def troubleshoot_guide(symptom):
    """
    故障排查指南
    
    参数:
        symptom: 故障现象
    返回:
        排查步骤列表
    """
    guide = {
        "高延迟": [
            "1. 检查CPU/GPU利用率是否超过阈值",
            "2. 验证输入批次大小是否合理(建议16-32)",
            "3. 检查是否有其他进程占用资源",
            "4. 使用nvidia-smi检查GPU内存使用情况",
            "5. 分析推理时间分布,定位长尾请求",
            "6. 考虑启用模型量化(INT8)"
        ],
        "准确率下降": [
            "1. 检查输入数据分布是否变化",
            "2. 验证测试集准确率是否下降",
            "3. 分析错误分类样本特征",
            "4. 检查是否有数据预处理逻辑变更",
            "5. 考虑模型微调或更新版本",
            "6. 验证标签映射是否正确"
        ],
        "内存泄漏": [
            "1. 监控内存使用随时间变化趋势",
            "2. 使用tracemalloc定位内存增长点",
            "3. 检查循环引用和未释放资源",
            "4. 验证transformers库版本是否有已知泄漏问题",
            "5. 考虑定期重启服务(临时解决方案)",
            "6. 使用objgraph分析对象创建模式"
        ],
        "输入数据异常": [
            "1. 检查文本长度分布(是否有超长文本)",
            "2. 验证特殊字符处理逻辑",
            "3. 检查是否有编码问题(UTF-8)",
            "4. 分析空输入或重复输入频率",
            "5. 加强输入验证和清洗",
            "6. 添加异常输入样本到测试集"
        ]
    }
    
    return guide.get(symptom, ["未知故障现象,请提供更多信息"])

8.3 模型优化实施案例

def optimize_model_pipeline(original_pipeline, optimization_level=1):
    """
    优化模型推理管道
    
    参数:
        original_pipeline: 原始管道对象
        optimization_level: 优化级别(1-3)
    返回:
        优化后的管道
    """
    optimized_pipeline = original_pipeline
    
    logger.info(f"应用优化级别 {optimization_level}")
    
    # 级别1: 基础优化
    if optimization_level >= 1:
        # 启用推理模式
        import torch
        optimized_pipeline.model.eval()
        
        # 禁用梯度计算
        torch.set_grad_enabled(False)
        
        # 设置适当的设备
        if torch.cuda.is_available():
            optimized_pipeline.model = optimized_pipeline.model.cuda()
            logger.info("基础优化: 启用CUDA加速")
        else:
            logger.info("基础优化: CPU模式运行")
    
    # 级别2: 中级优化
    if optimization_level >= 2:
        try:
            # 启用TorchScript优化
            optimized_pipeline.model = torch.jit.script(optimized_pipeline.model)
            logger.info("中级优化: 启用TorchScript")
        except Exception as e:
            logger.warning(f"TorchScript优化失败: {str(e)}")
        
        # 优化批处理大小
        optimized_pipeline.batch_size = 32
        logger.info(f"中级优化: 设置批处理大小为 {optimized_pipeline.batch_size}")
    
    # 级别3: 高级优化
    if optimization_level >= 3:
        try:
            # 启用INT8量化
            from torch.quantization import quantize_dynamic
            optimized_pipeline.model = quantize_dynamic(
                optimized_pipeline.model, 
                {torch.nn.Linear}, 
                dtype=torch.qint8
            )
            logger.info("高级优化: 启用INT8量化")
        except Exception as e:
            logger.warning(f"量化优化失败: {str(e)}")
    
    return optimized_pipeline

9. 总结与未来展望

9.1 监控体系建设成果

通过本文档实现的监控方案,您的情感分析服务将获得:

  • 全方位的指标监控覆盖
  • 实时异常检测与告警
  • 性能瓶颈自动分析
  • 可视化的监控面板
  • 标准化的故障排查流程

9.2 未来改进方向

  1. 智能化监控: 集成机器学习模型预测性能趋势
  2. 自适应优化: 根据负载自动调整资源分配
  3. 多模型对比: 同时监控不同版本模型性能
  4. 用户体验监控: 关联分析预测结果对业务指标的影响
  5. 自动化修复: 实现常见故障的自动恢复

9.3 扩展学习资源

  • 官方文档: https://huggingface.co/docs/transformers
  • 性能优化指南: https://pytorch.org/tutorials/recipes/recipes/performance_tuning.html
  • Prometheus文档: https://prometheus.io/docs/introduction/overview/
  • 模型监控论文: https://arxiv.org/abs/2102.05095 (Model Cards for Model Reporting)

附录: 完整监控代码库

# 监控主程序: monitor.py
import time
import logging
import argparse
import threading
import numpy as np
from prometheus_client import start_http_server
from transformers import pipeline

# 导入前面章节定义的监控组件
from monitoring.metrics import initialize_metrics
from monitoring.anomaly import AnomalyDetector
from monitoring.alerting import AlertSystem
from monitoring.logging import configure_logging
from monitoring.performance import monitor_performance

def main():
    parser = argparse.ArgumentParser(description='情感分析模型监控服务')
    parser.add_argument('--model-path', default='./', help='模型路径')
    parser.add_argument('--port', type=int, default=8000, help='监控端口')
    parser.add_argument('--device', type=int, default=-1, help='设备ID(-1为CPU)')
    parser.add_argument('--log-dir', default='./logs', help='日志目录')
    parser.add_argument('--optimization', type=int, default=1, help='优化级别(1-3)')
    
    args = parser.parse_args()
    
    # 初始化日志
    configure_logging(args.log_dir)
    logger = logging.getLogger("sentiment-monitor")
    
    # 初始化指标
    metrics = initialize_metrics()
    
    # 加载模型
    logger.info(f"从{args.model_path}加载模型")
    sentiment_pipeline = pipeline(
        "sentiment-analysis",
        model=args.model_path,
        tokenizer=args.model_path,
        device=args.device
    )
    
    # 应用优化
    from optimization import optimize_model_pipeline
    optimized_pipeline = optimize_model_pipeline(
        sentiment_pipeline, 
        optimization_level=args.optimization
    )
    
    # 初始化异常检测器
    anomaly_detector = AnomalyDetector(window_size=100, z_threshold=3.0)
    
    # 初始化告警系统(从环境变量加载配置)
    from dotenv import load_dotenv
    import os
    load_dotenv()
    
    alert_config = {
        'smtp_server': os.getenv('SMTP_SERVER'),
        'smtp_port': int(os.getenv('SMTP_PORT', 587)),
        'smtp_username': os.getenv('SMTP_USERNAME'),
        'smtp_password': os.getenv('SMTP_PASSWORD'),
        'recipients': os.getenv('ALERT_RECIPIENTS', '').split(','),
        'cooldown_seconds': 300
    }
    
    alert_system = AlertSystem(alert_config)
    
    # 启动性能监控线程
    test_cases = [
        ("I love using this sentiment analysis model!", "Positive"),
        ("This is a neutral statement about the weather.", "Neutral"),
        ("I hate waiting for slow model inference times.", "Negative"),
        # 添加更多测试用例...
    ]
    
    monitor_thread = threading.Thread(
        target=monitor_performance,
        args=(optimized_pipeline, test_cases),
        kwargs={'interval': 300},
        daemon=True
    )
    monitor_thread.start()
    
    # 启动Prometheus端点
    start_http_server(args.port)
    logger.info(f"监控服务启动在端口{args.port}")
    
    # 主循环
    try:
        while True:
            # 这里可以添加定期报告生成等任务
            time.sleep(3600)
    except KeyboardInterrupt:
        logger.info("监控服务正在关闭...")

if __name__ == "__main__":
    main()

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创作声明:本文部分内容由AI辅助生成(AIGC),仅供参考

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