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Working with Applications
MemVerge provides additional instructions for some popular applications supported by Memory Machine, either to assist with complex setup or to support additional functionality.
Working with KVM in Memory Machine
Running KVMs in Memory Machine requires extra setup and configuration.
Working with Tiered Memory
Running a VM on Memory Machine
Start a VM under Memory Machine management and monitor its resource usage and performance.

Overview and Installation
Getting started with MemVerge Memory Machine requires that you understand some background information about how persistent memory works. You can then install Memory Machine on a server and begin monitoring memory usage and capturing application snapshots.
Using the Memory Machine Management Center
Memory Machine Management Center (M3C) is a web UI application available on the host that is running the Memory Machine Management Service. You can view system resources and performance metrics; create and restore snapshots; schedule jobs; and more in M3C.
Using the Command Line Interface
You can administer and use MemVerge Memory Machine using the Command Line Interface (CLI) on any installed host.
Working with Applications
MemVerge provides additional instructions for some popular applications supported by Memory Machine, either to assist with complex setup or to support additional functionality.
- Working with Hazelcast Clusters
  Using MemVerge Memory Machine, you can manage the hosts of a Hazelcast cluster, capture snapshots of the cluster, and restore snapshotted clusters.
- Working with KVM in Memory Machine
  Running KVMs in Memory Machine requires extra setup and configuration.
  - Running KVM on Memory Machine
    Running KVM on Memory Machine involves installing the KVM and Memory Machine software on a host machine; configuring KVM to use the Memory Machine memory manager on startup; and starting the virtual machine.
  - Working with Tiered Memory
    - Running a VM on Memory Machine
      Start a VM under Memory Machine management and monitor its resource usage and performance.
    - Resizing DRAM Tier for KVM
      Resize the DRAM tier during runtime to balance performance with memory resource cost using the mvmcli dram resize command.
    - Examples: Resizing DRAM Tier for KVM
- Working with Redis in Memory Machine
All Documentation
Links to all technical documentation for MemVerge Memory Machine including previous releases.

Running a VM on Memory Machine

Start a VM under Memory Machine management and monitor its resource usage and performance.

Procedure

Run the virtual machine.
```
# virsh start vm-name
```
where vm-name is the name of the VM.

The VM starts up under Memory Machine management.

Optional: Show the running VM from the KVM.

~]# virsh list 
 Id    Name                           State
--------------------------------------------------------------------------
 68    vm-name                         running

Use the mvmcli snapshot list command to view processes running on Memory Machine. Note the process ID of the KVM instance.

~]# mvmcli snapshot list
NSID        PID     User     Date Started              Command
--------------------------------------------------------------------------
4026531836  41076   qemu     Thu Dec 10 16:55:11 2020  /usr/libexec/qemu-kvm -name guest=test-vm,……
Snapshots:       None

Show the VM's memory usage by specifying the process ID to the mvmcli show-usage command.

~]# mvmcli show-usage -v -p 41076
This instance is using 1699.01 MiB DRAM, 0.00 MiB PMEM for current execution and 0.00 MiB PMEM for snapshots
Configured DRAM iter size (MiB): 4096.00
Allocated DRAM size (MiB): 1792.00
Mapped DRAM size (MiB) : 1662.00
Use HugePages: Yes