通过dmesg列出的事件时间不易理解，例如：

[19078.666869] EXT4-fs (sdl): warning: maximal mount count reached, running e2fsck is recommended

[19078.723154] EXT4-fs (sdm): warning: maximal mount count reached, running e2fsck is recommended

[19078.913409] EXT4-fs (sdh): warning: maximal mount count reached, running e2fsck is recommended

[69740.690129] Bridge firewalling registered

通过下面命令转换成可读时间：

[root@buffer236017 src]# date -d "1970-01-01 UTC `echo "$(date +%s)-$(cat /proc/uptime|cut -f 1 -d' ')+69740.690129"|bc `seconds"

Fri Aug 15 11:41:35 CST 2014

[root@buffer236017 src]#