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select-mysql-Linux_2.4.4_SMP_alpha
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 4.0.5 beta' at 2002-10-23 13:29:36
- 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): 4 wallclock secs ( 0.81 usr 0.38 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
- Test if the database has a query cache
- Time for select_cache (10000): 89 wallclock secs ( 3.03 usr 0.74 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
- Time for select_cache2 (10000): 91 wallclock secs ( 3.53 usr 0.76 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
- Testing big selects on the table
- Time for select_big (70:17207): 0 wallclock secs ( 0.14 usr 0.08 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
- Time for select_range (410:1057904): 242 wallclock secs ( 8.57 usr 4.60 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
- Time for min_max_on_key (70000): 178 wallclock secs (21.67 usr 4.75 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
- Time for count_on_key (50000): 412 wallclock secs (16.70 usr 3.58 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
- Time for count_group_on_key_parts (1000:100000): 37 wallclock secs ( 1.02 usr 0.48 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
- Testing count(distinct) on the table
- Time for count_distinct_key_prefix (1000:1000): 28 wallclock secs ( 0.44 usr 0.09 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
- Time for count_distinct (1000:1000): 32 wallclock secs ( 0.44 usr 0.07 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
- Time for count_distinct_2 (1000:1000): 32 wallclock secs ( 0.44 usr 0.08 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
- Time for count_distinct_group_on_key (1000:6000): 38 wallclock secs ( 0.48 usr 0.12 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
- Time for count_distinct_group_on_key_parts (1000:100000): 50 wallclock secs ( 1.15 usr 0.47 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
- Time for count_distinct_group (1000:100000): 50 wallclock secs ( 1.14 usr 0.52 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
- Time for count_distinct_big (100:1000000): 15 wallclock secs ( 7.36 usr 4.25 sys + 0.00 cusr 0.00 csys = 0.00 CPU)
- Total time: 1298 wallclock secs (66.92 usr 20.96 sys + 0.00 cusr 0.00 csys = 0.00 CPU)