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DFL-1500
Инструкция по эксплуатации Страница: 232

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Part IX

System Maintenance

D-Link 224

Status The interface status of DFL-1500. The possible value is either “UP” or “DOWN”.

TxPkts The amount of packets which are transferred from this interface in bytes.

RxPkts The amount of packets which are received from this interface in bytes

Collisions The amount of packets which have collisions in this interface.

Tx B/s The transmitted speed of packets which are in the indicated interface.

Rx B/s The receipted speed of packets which are in the indicated interface.

Table 28-1 field description of network status

Step 3. CPU & Memory

We can know the device information (including

system, user, interrupt and memory utilization)

through the graphic interface. For example, CPU

states: 3.0% user, 0% nice, 5% system, 20%

interrupt, and 72% idle. CPU Utilization= user +

nice + system + interrupt + idle= 100%

Note: If you can not view the graphic correctly,

the situation may result from that you don’t install

the java virtual machine (JVM) onto your browser.

Simply go to the following link,

http://java.sun.com/j2se/1.4.2/download.html.

And then, download the Java 2 Platform,

Standard Edition (JRE) to your platform (ex.

Windows). After installing JRE properly, you will

see the CPU & Memory graphic as right side.

DEVICE STATUS > System Status > CPU & Memory

FIELD DISCRIPTION

% system The percentage of the CPU utilization to perform kernel functions, I/O and other

hardware interaction.

% user The percentage of the CPU utilization to perform high-level functions, data movement,

math, etc. such as the running of the Anti-Virus, Anti-Spam, Content Filter, etc.

% interrupt The percentage of the CPU utilization for the network traffic to trigger the CPU

running. The VPN/Firewall Router uses interrupts to signal the CPU when there is

work for it to do. For example, when a packet comes to the device, it will trigger the

CPU to work. A large number of packets come concurrently (such as attacks), they will

raise the CPU’s loading. The percentage of the interrupt will then be quite high to tell

you that the device has many jobs to do. Watching the count of each interrupt can give

you a rough idea of how much load the VPN/Firewall Router is handling.

% memory utilization The percentage of the memory utilization. When many processes are running and using

up available memory, the system will slow down as processes get paged or swapped

out to make room for other processes to run. When the time slice is exhausted, that task

may have to be written out to the paging device to make way for the next process.

Memory-utilization graphs help point out memory problems.

Table 28-2 Explanation of the CPU & Memory Page

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