linux 下面的虚拟块设备,就是将内存的一个部分虚拟为块设备,提高输入输出的效率-linux following the virtual block device, that is, a part of virtual memory for the block device, improve the efficiency of input-output
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001552s ]
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:0.092953s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000987s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001129s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001014s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003062s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000891s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.008476s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014360s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001195s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 171736 [ RunTime:0.015091s ]
