求解 cpu状态为no-intr 是什么意思

wjxlcc

System Configuration:  Sun Microsystems  sun4v Netra T5440
Memory size: 65312 Megabytes

================================ Virtual CPUs ================================


CPU ID Frequency Implementation         Status
------ --------- ---------------------- -------
0      1165 MHz  SUNW,UltraSPARC-T2+    no-intr  
1      1165 MHz  SUNW,UltraSPARC-T2+    no-intr  
2      1165 MHz  SUNW,UltraSPARC-T2+    no-intr  
3      1165 MHz  SUNW,UltraSPARC-T2+    no-intr  
4      1165 MHz  SUNW,UltraSPARC-T2+    no-intr  
5      1165 MHz  SUNW,UltraSPARC-T2+    no-intr  
6      1165 MHz  SUNW,UltraSPARC-T2+    no-intr  
7      1165 MHz  SUNW,UltraSPARC-T2+    no-intr  
8      1165 MHz  SUNW,UltraSPARC-T2+    on-line  
9      1165 MHz  SUNW,UltraSPARC-T2+    no-intr  
10     1165 MHz  SUNW,UltraSPARC-T2+    no-intr  
11     1165 MHz  SUNW,UltraSPARC-T2+    no-intr  
12     1165 MHz  SUNW,UltraSPARC-T2+    no-intr  
13     1165 MHz  SUNW,UltraSPARC-T2+    no-intr  

to407

no-intr = no interruptible.

在linux里 process常见的状态 ：
running
interruptible
non-interruptible
...

可以看下面这个，需要对linux内核有适当的了解

这个状态下的进程 不能被普通干预，除非主动地放弃资源。。
http://blog.csdn.net/tianlesoftware/article/details/6457487

DC_楚楚

回复 1# wjxlcc

    An on-line processor processes LWPs (lightweight processes) and can be interrupted by I/O devices in the system.
    An off-line processor does not process any LWPs. Usually, an off-line processor is not interruptible by I/O devices in the system.
    A no-intr processor processes LWPs but is not interruptible by I/O devices.
    A spare processor does not process any LWPs.
    A faulted processor is identified by the kernel, which monitors the behavior of processors over time.


   The psradm utility changes the operational status of processors. The legal states for the processor are on-line, off-line, spare, faulted, and no-intr.


Setting All Processors on-line
% psradm -a -n



出处：http://docs.oracle.com/cd/E19253-01/816-5166/6mbb1kqds/index.html

wjxlcc

回复 2# DC_楚楚


    A no-intr processor processes LWPs but is not interruptible by I/O devices. 能解释下吗，不是很理解。