linux下查找最耗iowait的进程 抓哪个进程干坏事前要先停掉syslog service syslog stop 打开block dump: echo 1 > /proc/sys/vm/block_dump 统计： dmesg | egrep "READ|WRITE|dirtied" | egrep -o '([a-zA-Z]*)' | sort | uniq -c | sort -rn | head 1423 kjournald 1075 pdflush 209 indexer 3 cronolog 1 rnald 1 mysqld 不要忘记在抓完之 后关掉block_dump和启动syslog: echo 0 > /proc/sys/vm/block_dump service syslog start http://hi.baidu.com/farmerluo/blog/item/a99b6b63b5c29c6c0d33fae1.html