Monitoring Memory Management Protection Information

Purpose

Display information about memory management protection of the router.

Note: You can use the show memory-management protection command only in the support mode and it is not user configurable.

Action

To display information about memory management protection of the router:

host1#show memory-management protection 
Mgr summary: 
  memory protection mode: 2 (app-level protection, audit only) 
  stacks excluded: true 
  allowed faults: 
    interrupt: yes 
    kernel:    yes 
    shell:     yes 
    vxWorks:   yes 
    OsTask:    yes 
  error conditions: 
     fault ring full      0 
     reversion queue full 0 
     memProtLock count: 1 
     maxReversionQueueDepth: 0 
     context switch stack: 0xaa2646c 
Mmu driver summary: 
  page size: 4096 
  total memory mapped: 0x80436000 (2052MB, 525366 pages) 
  highest mapped address: 0xffffffff 
Page table summary: 
  size: 
    8388608 (2^23) bytes 
    1048576 entries 
    131072 groups 
  address: 0x2c000000 
  findEntry errors: 0 
Context stats: 
   current    145 
   high-water 149 
   accum      244 (0 Hz) 
Fault summary: 
  faulter counts: 
    interrupt 0 
    kernel    0 
    shell     0 
    vxWorks   0 
    OsTask    0 
    normal    0 
Rule stats: 
  current    256 
  high-water 258 
  accum      28 (0 Hz) 
  partialPagesIgnored 0 
  partialPagesExtended 0

Meaning

Table 57 lists the show memory-management protection command output fields.

Table 57: show memory-management protection Output Fields

Field Name	Field Description
Mgr summary	Information about the OS Memory Manager memory protection mode: memory protection mode—There are four modes of this protection: 0 (disable)—Disable all memory protection 1 (basic)—no app-level protection 2 (audit)—violations are logged but non-fatal 3 (fault)—violations are fatal stacks excluded—States if the stacks are excluded allowed faults—States the different faults allowed for this mode (applicable only for mode 2 and 3) : interrupt—Interrupts the service routine kernel—vxWorks kernel task shell—vxWorks shell task vxWorks—Generic vxWorks task OsTask—Real OsTask error conditions—Information about the several error counters and their values: fault ring full—Counter for the fault ring is full reversion queue full—Counter for the reversion queue is full memProtLock count—Counter for the memory protection lock maxReversionQueueDepth—Counter for the maximum possible depth for the reversion queue context switch stack—Address for the context switch stack
Mmu driver summary	Information about the page size, total memory mapped, and the highest mapped address: page size—Size of the page managed by the MMU total memory mapped—Total amount of mapped memory highest mapped address—Highest mapped address in the range
Page table summary	Information about the page table size along with the address and entry errors if any: size—Size of the page table in bytes, entry count, and group count address—Group address findEntry errors—Count for the findEntry errors
Context stats	Information about the memory utilization of context switching stack (applicable only for mode 2 and 3): current—Current count high-water—High-water mark count for the context accum—Accumulated count for the context
Fault summary	Information about the fault counters (applicable only for mode 2 and 3): faulter counts—Details of counts for fault types: interrupt—Fault counter for the interrupt type kernel—Fault counter for the kernel type shell—Fault counter for the shell type vxWorks—Fault counter for the vxWorks type OsTask—Fault counter for the OsTask type normal—Non-fault count
Rule stats	Statistics related to the access policies of the memory area: current—Current rule count high-water—Rule statistics for the high-water mark count accum—Rule statistics for the accumulated count partialPagesIgnored—Count for ignored partial pages partialPagesExtended—Count for extended partial pages

Monitoring Memory Management Protection Information

Purpose

Action

Meaning

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