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select-mysql-NT_4.0
上传用户：romrleung
上传日期：2022-05-23
资源大小：18897k
文件大小：2k
源码类别：
MySQL数据库
开发平台：
Visual C++
- Testing server 'MySQL 3.23.37' at 2001-04-19 16:00:44
- Testing the speed of selecting on keys that consist of many parts
- The test-table has 10000 rows and the test is done with 500 ranges.
- Creating table
- Inserting 10000 rows
- Time to insert (10000): 7 wallclock secs ( 1.27 usr 1.34 sys + 0.00 cusr 0.00 csys = 0.00 CPU) Test if the database has a query cache Time for select_query_cache (10000): 90 wallclock secs ( 5.81 usr 1.91 sys + 0.00 cusr 0.00 csys = 0.00 CPU) Time for select_query_cache2 (10000): 91 wallclock secs ( 5.55 usr 1.86 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
- Testing big selects on the table
- Time for select_big (70:17207): 1 wallclock secs ( 0.33 usr 0.17 sys + 0.00 cusr 0.00 csys = 0.00 CPU) Time for select_range (410:1057904): 186 wallclock secs (27.06 usr 9.17 sys + 0.00 cusr 0.00 csys = 0.00 CPU) Time for min_max_on_key (70000): 182 wallclock secs (31.70 usr 12.77 sys + 0.00 cusr 0.00 csys = 0.00 CPU) Time for count_on_key (50000): 368 wallclock secs (22.81 usr 8.23 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
- Time for count_group_on_key_parts (1000:100000): 40 wallclock secs ( 2.73 usr 0.83 sys + 0.00 cusr 0.00 csys = 0.00 CPU) Testing count(distinct) on the table
- Time for count_distinct_key_prefix (1000:1000): 39 wallclock secs ( 0.52 usr 0.17 sys + 0.00 cusr 0.00 csys = 0.00 CPU) Time for count_distinct (1000:1000): 48 wallclock secs ( 0.56 usr 0.20 sys + 0.00 cusr 0.00 csys = 0.00 CPU) Time for count_distinct_2 (1000:1000): 52 wallclock secs ( 0.45 usr 0.27 sys + 0.00 cusr 0.00 csys = 0.00 CPU) Time for count_distinct_group_on_key (1000:6000): 48 wallclock secs ( 0.58 usr 0.17 sys + 0.00 cusr 0.00 csys = 0.00 CPU) Time for count_distinct_group_on_key_parts (1000:100000): 145 wallclock secs ( 3.02 usr 0.94 sys + 0.00 cusr 0.00 csys = 0.00 CPU) Time for count_distinct_group (1000:100000): 145 wallclock secs ( 2.67 usr 1.19 sys + 0.00 cusr 0.00 csys = 0.00 CPU) Time for count_distinct_big (100:1000000): 114 wallclock secs (22.47 usr 8.11 sys + 0.00 cusr 0.00 csys = 0.00 CPU) Total time: 1556 wallclock secs (127.53 usr 47.33 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
