IIS Log Parser - 需要查询以查找按URL分组的"请求总计> x秒"/"总请求数"

Question

我支持一个偶尔出现性能问题的应用程序.客户想知道页面缓慢的频率.

即页面占用的总时间大于x秒/页面请求的总数

我想编写一个查询来获取所需的数据.

SQL中的这样的东西可能会工作,但在IIS日志解析器中不起作用.

select URL, count(case when time > 100  then 1 else null end), count(*)
from   table1
group by URL

Answer 1

这里的问题是你需要两个查询.

• 一个计算每页请求的总数,无论花费多少时间

  SELECT cs-uri-stem, COUNT(*) AS all-requests 
  FROM ex*.log 
  GROUP BY cs-uri-stem
  

• 一个计算时间> X秒的页数

  SELECT cs-uri-stem, COUNT(*) as total-requests
  FROM ex*.log
  WHERE time-taken > 1000 <- time_taken is milliseconds
  GROUP BY cs-uri-stem 
  

你想要的结果需要加入:

SELECT a.cs-uri-stem, COUNT(*) as total-requests, b.all-requests
FROM ex*.log AS a
JOIN (
    SELECT cs-uri-stem, COUNT(*) AS all-requests 
    FROM ex*.log 
    GROUP BY cs-uri-stem
) AS b ON b.cs-uri-stem = a.cs-uri-stem
WHERE a.time-taken >1000 
GROUP BY a.cs-uri-stem 

不幸的是,LogParser中没有对JOIN的支持.

您可以做的是将两个查询的结果导入SQL数据库并在那里运行查询:

SELECT a.cs-uri-stem, COUNT(*) as total-requests, b.all-requests
FROM long_running_pages AS a
JOIN all_pages_grouped b ON ( a.cs-uri-stem = b.cs-uri-stem)
GROUP BY a.cs-uri-stem