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Linux 2.6.33-fukai (fukai-laptop) _i686_ (2 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle
5.47 0.50 8.96 48.26 0.00 36.82
 
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util
sda 6.00 273.00 99.00 7.00 2240.00 2240.00 42.26 1.12 10.57 7.96 84.40
sdb 0.00 4.00 0.00 350.00 0.00 2068.00 5.91 0.55 1.58 0.54 18.80
rrqm/s:
   ÿÃë½øÐÐ merge µÄ¶Á²Ù×÷ÊýÄ¿¡£¼´ delta(rmerge)/s
wrqm/s:
  ÿÃë½øÐÐ merge µÄд²Ù×÷ÊýÄ¿¡£¼´ delta(wmerge)/s
r/s:
           ÿÃëÍê³ÉµÄ¶Á I/O É豸´ÎÊý¡£¼´ delta(rio)/s
w/s:
         ÿÃëÍê³ÉµÄд I/O É豸´ÎÊý¡£¼´ delta(wio)/s
rsec/s:
    ÿÃë¶ÁÉÈÇøÊý¡£¼´ delta(rsect)/s
wsec/s: 
ÿÃëдÉÈÇøÊý¡£¼´ delta(wsect)/s
rkB/s:  
   ÿÃë¶ÁK×Ö½ÚÊý¡£ÊÇ rsect/s µÄÒ»°ë£¬ÒòΪÿÉÈÇø´óСΪ512×Ö½Ú¡£(ÐèÒª¼ÆËã)
wkB/s:
    ÿÃëдK×Ö½ÚÊý¡£ÊÇ wsect/s µÄÒ»°ë¡£(ÐèÒª¼ÆËã)
avgrq-sz:
ƽ¾ùÿ´ÎÉ豸I/O²Ù×÷µÄÊý¾Ý´óС
(ÉÈÇø)¡£delta(rsect+wsect)/delta(rio+wio)
avgqu-sz:
ƽ¾ùI/O¶ÓÁг¤¶È¡£¼´ delta(aveq)/s/1000
(ÒòΪaveqµÄµ¥Î»ÎªºÁÃë)¡£
await:
    ƽ¾ùÿ´ÎÉ豸I/O²Ù×÷µÄµÈ´ýʱ¼ä (ºÁÃë)¡£¼´
delta(ruse+wuse)/delta(rio+wio)
svctm:  
ƽ¾ùÿ´ÎÉ豸I/O²Ù×÷µÄ·þÎñʱ¼ä (ºÁÃë)¡£¼´
delta(use)/delta(rio+wio)
%util:     
Ò»ÃëÖÐÓаٷÖÖ®¶àÉÙµÄʱ¼äÓÃÓÚ I/O ²Ù×÷£¬»òÕß˵һÃëÖÐÓжàÉÙʱ¼ä I/O
¶ÓÁÐÊǷǿյġ£¼´ delta(use)/s/1000 (ÒòΪuseµÄµ¥Î»ÎªºÁÃë)
Èç¹û %util ½Ó½ü 100%£¬ËµÃ÷²úÉúµÄI/OÇëÇóÌ«¶à£¬I/OϵͳÒѾ­Âú¸ººÉ£¬¸Ã´ÅÅÌ
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idleСÓÚ70% IOѹÁ¦¾Í½Ï´óÁË,Ò»°ã¶ÁÈ¡ËÙ¶ÈÓн϶àµÄwait.
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