在 Windows 7 上使用 start/AFFINITY 命令设置关联 [英] Set affinity with start /AFFINITY command on Windows 7

问题描述

我正在使用 start/AFFINITY [n] [.exe] 命令来启动具有指定关联的可执行文件.我有一个带有 8 个处理器(1、2、3、4、5、6、7、8)的系统.我想将进程设置为使用所有奇数处理器(1、3、5、7).我不知道如何做到这一点，想知道是否可以使用 start 命令.如果没有，是否有替代的命令行方法?

I am using the start /AFFINITY [n] [.exe] command to start an executable with the specified affinity. I have a system with 8 processors (1,2,3,4,5,6,7,8). I'd like to set the process to use all of the odd processors (1,3,5,7). I cannot figure out how to do this and would like to know if it's possible using the start command. If not, is there an alternate command-line way of doing it?

启动命令的帮助不是特别有用:

The help for the start command wasn't particularly useful:

 AFFINITY    Specifies the processor affinity mask as a hexadecimal number.
             The process is restricted to running on these processors.

             The affinity mask is interpreted differently when /AFFINITY and
             /NODE are combined.  Specify the affinity mask as if the NUMA
             node's processor mask is right shifted to begin at bit zero.
             The process is restricted to running on those processors in
             common between the specified affinity mask and the NUMA node.
             If no processors are in common, the process is restricted to
             running on the specified NUMA node.

推荐答案

AFFINITY 使用 十六进制掩码 应该允许对所有处理器进行精细控制.请注意，最右边的位指定最低阶 CPU (0)(请参阅 KB 299641).

AFFINITY works with a hexidecimal mask that should allow granular control of all of your processors. Note that the rightmost bit specifies the lowest-order CPU (0) (see KB 299641).

对于有问题的情况，0xAA (10101010) 要求您的进程使用处理器 1、3、5 和 7 运行，而不是 0、2、4 或 6.请务必在命令中省略0x"线.

For the case in question, 0xAA (10101010) requests that your process run using processors 1, 3, 5 and 7, but not 0, 2, 4 or 6. Be sure to leave out the '0x' on the command line.

 start /affinity AA app.exe

其他示例:

 start /affinity 1 app.exe     (only use CPU 0)
 start /affinity 2 app.exe     (only use CPU 1)
 start /affinity 1F app.exe    (only use CPUs 0, 1, 2, 3, and 4)

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