select-mysql-Linux_2.4.16_64GB_SMP_i686
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 4.0.2 alpha' at 2002-05-20 16:08:50
- 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): 3 wallclock secs ( 0.46 usr 0.25 sys + 0.00 cusr 0.00 csys = 0.71 CPU)
- Test if the database has a query cache
- Time for select_cache (10000): 88 wallclock secs ( 2.21 usr 0.38 sys + 0.00 cusr 0.00 csys = 2.59 CPU)
- Time for select_cache2 (10000): 89 wallclock secs ( 2.49 usr 0.39 sys + 0.00 cusr 0.00 csys = 2.88 CPU)
- Testing big selects on the table
- Time for select_big (70:17207): 0 wallclock secs ( 0.13 usr 0.03 sys + 0.00 cusr 0.00 csys = 0.16 CPU)
- Time for select_range (410:1057904): 103 wallclock secs ( 8.73 usr 2.95 sys + 0.00 cusr 0.00 csys = 11.68 CPU)
- Time for min_max_on_key (70000): 153 wallclock secs (15.68 usr 2.24 sys + 0.00 cusr 0.00 csys = 17.92 CPU)
- Time for count_on_key (50000): 378 wallclock secs (11.70 usr 1.69 sys + 0.00 cusr 0.00 csys = 13.39 CPU)
- Time for count_group_on_key_parts (1000:100000): 43 wallclock secs ( 0.96 usr 0.31 sys + 0.00 cusr 0.00 csys = 1.27 CPU)
- Testing count(distinct) on the table
- Time for count_distinct_key_prefix (1000:1000): 28 wallclock secs ( 0.29 usr 0.03 sys + 0.00 cusr 0.00 csys = 0.32 CPU)
- Time for count_distinct (1000:1000): 34 wallclock secs ( 0.24 usr 0.05 sys + 0.00 cusr 0.00 csys = 0.29 CPU)
- Time for count_distinct_2 (1000:1000): 38 wallclock secs ( 0.25 usr 0.07 sys + 0.00 cusr 0.00 csys = 0.32 CPU)
- Time for count_distinct_group_on_key (1000:6000): 43 wallclock secs ( 0.26 usr 0.05 sys + 0.00 cusr 0.00 csys = 0.31 CPU)
- Time for count_distinct_group_on_key_parts (1000:100000): 47 wallclock secs ( 0.98 usr 0.29 sys + 0.00 cusr 0.00 csys = 1.27 CPU)
- Time for count_distinct_group (1000:100000): 47 wallclock secs ( 1.00 usr 0.27 sys + 0.00 cusr 0.00 csys = 1.27 CPU)
- Time for count_distinct_big (100:1000000): 12 wallclock secs ( 7.14 usr 2.75 sys + 0.00 cusr 0.00 csys = 9.89 CPU)
- Total time: 1106 wallclock secs (52.54 usr 11.75 sys + 0.00 cusr 0.00 csys = 64.29 CPU)