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Measures reported by VmAccessTest
Sometimes, a VM could be in a powered-on state, but the failure of the VM operating system or any fatal error in VM operations could have rendered the VM inaccessible to users. In order to enable administrators to promptly detect such 'hidden' anomalies, the eG agent periodically runs a connectivity check on each VM using the VmAccessTest, and reports whether the VM is accessible over the network or not. The measures
made by this test are as
follows:
| Measurement |
Description |
Measurement
Unit |
Interpretation |
| Avg_delay |
Indicates
the average delay between transmission of packet to a VM and
receipt of the response to the packet at the source. |
Secs |
An
increase in network latency could result from misconfiguration of the
router(s) along the path, network congestion, retransmissions at the
network, etc. |
| Min_delay |
The
minimum time between transmission of a packet and receipt of the
response back. |
Secs |
A
significant increase in the minimum round-trip time is often a sure
sign of network congestion. |
| Pkt_loss_pct |
Indicates
the percentage of packets lost during transmission from source to
target and back. |
Percent |
Packet
loss is often caused by network buffer overflows at a network router
or by packet corruptions over the network. |
| Availability |
Indicates the
availability of the network connection |
Percent |
A
value of 100 indicates that the VM is connected. The value 0
indicates that the VM is not connected.
Typically, the value 100 corresponds to a Pkt_loss_pct of 0. |
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