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VRM memory high usage

Publication Date:  2015-05-08 Views:  75 Downloads:  0
Issue Description

Remind you VRM01 memory was rising to near 80%:

Alarm Information

Portal has an alarm VM Memory Usage Exceeds the Threshold, alarm object is VRM01

Handling Process

      Memory Usage Mechanism

Virtual Resources Management (FusionCompute) collected memory information from OS Kernal which included free, buffers and cached memory status, VRM OS selected cached+ and slab information stored in Cached from memory, if slab is in high usage then FusionCompute will reported in high memory usage. 

As shown in the figure:

 

  

 

  

 The picture shown above is descripting VRM is a component that manage physical resources from host, if high memory alarm occurs it wouldn't affect operation of guest VM on hosts.

Solution

Solution 1: The high memory usage alarm of VRM01 could be ignored.

Solution 2: Release the memory space in system

Login VRM server as root user, run the following command:

    Sync

    Echo 3> /proc/sys/vm/drop_caches

 

     Wait for 10 minutes and logon to FusionManager Portal check if the alarm is cleaned automatically.

Solution 3: Version upgrade will be released in future.

END

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