内核，是一个操作系统的核心。它负责管理系统的进程、内存、设备驱动程序、文件和网络系统，决定着系统的性能和稳定性。Linux作为一个自由软件，在广大爱好者的支持下，内核版本不断更新。新的内核修订了旧内核的bug，并增加了许多新的特性。如果用户想要使用这些新特性，或想根据自己的系统度身定制一个更高效，更稳定的内核，就需要重新编译内核。本文将以RedHat Linux 6.0（kernel 2.2.5）为操作系统平台，介绍在Linux上进行内核编译的方法。
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001391s ]
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:0.082299s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001384s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001289s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000911s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003328s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000834s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.005571s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.023976s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001544s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 456023 [ RunTime:0.016243s ]
