Ubuntu系统在100%X2的处理器占用率的情况下依然可以流畅运行

[binker]

系统性能已经达到处理器所能达到的极限

两个处理器内核的负载都是达到了100%！
linux的高速运行效能真的是令人感到惊叹，

[速腾1994]

有个词好像叫：nice

[速腾1994]

代码： 全选

man nice

代码： 全选

NICE(1)                          User Commands                         NICE(1)

NAME
       nice - run a program with modified scheduling priority

SYNOPSIS
       nice [OPTION] [COMMAND [ARG]...]

DESCRIPTION
       Run  COMMAND  with an adjusted niceness, which affects process schedul‐
       ing.  With no COMMAND, print the current  niceness.   Nicenesses  range
       from -20 (most favorable scheduling) to 19 (least favorable).

       -n, --adjustment=N
              add integer N to the niceness (default 10)

       --help display this help and exit

       --version
              output version information and exit

       NOTE: your shell may have its own version of nice, which usually super‐
       sedes the version described here.  Please refer to your  shell's  docu‐
       mentation for details about the options it supports.

AUTHOR
       Written by David MacKenzie.

REPORTING BUGS
       Report nice bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report nice translation bugs to <http://translationproject.org/team/>

COPYRIGHT
       Copyright  ©  2010  Free Software Foundation, Inc.  License GPLv3+: GNU
       GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free  to  change  and  redistribute  it.
       There is NO WARRANTY, to the extent permitted by law.

SEE ALSO
       nice(2)

       The  full documentation for nice is maintained as a Texinfo manual.  If
       the info and nice programs are properly installed  at  your  site,  the
       command

              info coreutils 'nice invocation'

       should give you access to the complete manual.

GNU coreutils 8.5                December 2010                         NICE(1)

[renxinzhi]

这个很正常，但是你的内存没有全部用完，你可以试试把内存全部用完的时候（CPU即使不100%）你的机器还是不是很流畅。