ÎÄÕÂÉæ¼°µÄpatches,¿ÉÔÚmm-patches,ck-patchesÖÐÕÒµ½.
¸üÐÂ:ÓÉÓÚLinux ºËÐÄ¿ª·¢ÖйÌÓеÄì¶Ü,
ÓÐЩ¿ª·¢Õß½«²»ÔÙ½øÐкËÐÄ¿ª·¢,
ÏÂÃæÌáµ½µÄ²¿·Öpatch½«²»ÔÙ±»Î¬»¤.
swap-prefetch:
ÒѾ±È½ÏÎȶ¨,Ô¤¼Æ2.6.22½øÈëmainline.
ÔçÒѱ»Novell SuSe Desktop 10ºËÐIJÉÓÃ.
ÓпÉÄÜûÓмÓËÙ×÷ÓÃ,µ«Ò»°ãÈÏΪÊÇÓеÄ(¶ÔfirefoxÓмÓËÙ×÷ÓÃ).
Îļþ:
mm-implement-swap-prefetching.patch
¼òҪ˵Ã÷:
Implement swap prefetching when the vm is relatively idle and there is free
ram available.
Prefetching can be enabled/disabled via the tunable in
/proc/sys/vm/swap_prefetch initially set to 1 (enabled).
Enabling laptop_mode disables swap prefetching to prevent unnecessary spin
ups.(×î½üÌí¼ÓµÄ¹¦ÄÜ,¶Ô±Ê¼Ç±¾Óû§À´Ëµ»áÊ¡²»ÉÙµç)
O(1) µ÷¶ÈÆ÷: CFS scheduler v15
±È½ÏÎȶ¨,2.6.23ÓÐÏ£Íû½øÈëmainline.
readahead:
Îȶ¨³Ì¶ÈÒ»°ã(ËäÈ»¿ª·¢Ê±¼äÒ²²»¶ÌÁË).
ÄѵõĹúÈË×÷Æ·,×÷ÕßÎâ·å¹â
¼ÓËÙЧ¹û²»ÑÔ¶øÓ÷.Ô¤¶ÁÎļþ.
Îļþ:readahead¿ªÍ·µÄËùÓÐÎļþ.
²»Îȶ¨,Ч¹û±È½ÏÃ÷ÏÔµÄ,¿ÉÒÔ¿¼ÂÇ:
Big IO commands v6
Large Blocksize Support V3
(ÕâÁ½¸öÐèÒª×ÔÐвéÕÒ,²»°üº¬ÔÚmm,ckÖÐ.)
ÍÏÁËÎÞÊý´Î,2.6.23,reiser4µÄÓÖÒ»´Î»ú»á.