Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

LinuxÏÂij¸öĿ¼ÏµÄÎļþ°´´óСÅÅÐò

1. df -lh
²é´ÅÅÌʹÓÃÇé¿ö
2. du -s /usr/* | sort -rn
ÕâÊǰ´×Ö½ÚÅÅÐò
3. du -sh /usr/* | sort -rn
ÕâÊǰ´Õ×£¨M£©À´ÅÅÐò
4.Ñ¡³öÅÅÔÚÇ°ÃæµÄ10¸ö
du -s /usr/* | sort -rn | head
5.Ñ¡³öÅÅÔÚºóÃæµÄ10¸ö
du -s /usr/* | sort -rn | tail
˵Ã÷£º/usr/*Ò²¿ÉÒԸijÉÄãÏëµ½´ïµÄÈκÎĿ¼
Èç/usr/local/zhou/resin Õâ¸öĿ¼¾Í¿ÉÒÔд³É
/usr/local/zhou/resin/*
6¡¢ls -S
7¡¢
½µÐòÅÅÁР ls -l |sort -rn
ÉýÐòÅÅÁР ls -l |sort -n


Ïà¹ØÎĵµ£º

Linux ÄÚ´æ¹ÜÀí ¸ß¶ËÄÚ´æµÄÓ³É䷽ʽ

½âÊÍÒ»:
¸ß¶ËÄÚ´æÊÇÖ¸ÎïÀíµØÖ·´óÓÚ 896M µÄÄÚ´æ¡£
¶ÔÓÚÕâÑùµÄÄڴ棬ÎÞ·¨ÔÚ“ÄÚºËÖ±½ÓÓ³Éä¿Õ¼ä”½øÐÐÓ³Éä¡£
Ϊʲô£¿
ÒòΪ“ÄÚºËÖ±½ÓÓ³Éä¿Õ¼ä”×î¶àÖ»ÄÜ´Ó 3G µ½ 4G£¬Ö»ÄÜÖ±½ÓÓ³Éä 1G ÎïÀíÄڴ棬¶ÔÓÚ´óÓÚ 1G µÄÎïÀíÄڴ棬ÎÞÄÜΪÁ¦¡£
ʵ¼ÊÉÏ£¬“ÄÚºËÖ±½ÓÓ³Éä¿Õ¼ä”Ò²´ï²»µ½ 1G£¬ »¹µÃÁôµã ......

sizeofÃæÊÔÌâÑ¡ Linux C±à³Ìʵս

   ½á¹¹ÌåºÍ¹²ÓÃÌåµÄÄÚ´æ·ÖÅäÊÇCÓïÑÔµÄÒ»¸öÄѵ㣬ҲÊÇÃæÊÔÌâÖеÄÈȵ㡣
ʾÀý1£º
   Union data1
 {
  double  d;
  int     i;
  char    c1;
  char    c2[9]; 
 };
  sizeof(union data1 ......

LinuxÄں˼°ARMµÄÄÚ´æ¹ÜÀí

ÓÐÐí¶àÊ£¬ÐèÒª»Øµ½u-boot²ÅÄÜ˵Çå³þ……
include\configs\XXXX.hÖУ¨XXXXÊÓ¾ßÌåÆ½Ì¨¶ø¶¨£©£¬Ò»°ã»á×÷ÀàËÆÈç϶¨Ò壺
#define CONFIG_BOOTCOMMAND "mmcinit; fatload mmc 0 0x81c00000 uImage; bootm 0x81c00000"
±àÒëʱ¸ÃºêCONFIG_BOOTCOMMAND´«µÝ¸øÒ»¸öENVÏîbootcmd£¬¶øÔÚcommon\main.cÖУ¬º¯Êýmain_loopÈ ......

Linux Scheduler Doc


New things to learn about Linux Scheduler):
1. Rotating Staircase Deadline cpu scheduler policy
2. CFS (Completely Fair Scheduler)
3. BFS (Brain Fuck Scheduler)
http://lwn.net/Articles/
http://kerneltrap.org/
......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ