批处理作业调度问题要求对于给定的n个作业，制定最佳作业调度方案，使其完成时间和最小-batch scheduling requirements for the issue to the n operations, the best scheduling program, and to fulfill the minimum time
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001200s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.091404s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001228s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001873s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001186s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003579s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001040s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003224s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014289s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001290s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 179236 [ RunTime:0.001198s ]
