Cisco Cisco Content Security Management Appliance M1070 Guida Utente
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AsyncOS 9.1 for Cisco Content Security Management Appliances User Guide
Chapter 4 Using Centralized Email Security Reporting
Understanding the Email Reporting Pages
expected. If the spikes occur with increasing frequency and are maintained over a long period of time,
this may indicate a capacity issue. When reviewing the work queue page, you may want to measure the
frequency of work queue backups, and take note of work queue backups that exceed 10,000 messages.
this may indicate a capacity issue. When reviewing the work queue page, you may want to measure the
frequency of work queue backups, and take note of work queue backups that exceed 10,000 messages.
System Capacity – Incoming Mail
The System Capacity – Incoming Mail page shows incoming connections, the total number of incoming
messages, the average message size, and the total incoming message size. You can view the results for
a day, week, month, or year. It is important to understand the trends of normal message volume and
spikes in your environment. You can use the System Capacity – Incoming Mail page to track volume
growth over time and plan for system capacity. You might also want to compare the incoming mail data
with the sender profile data to view the trends in volumes of email messages that are sent from specific
domains to your network.
messages, the average message size, and the total incoming message size. You can view the results for
a day, week, month, or year. It is important to understand the trends of normal message volume and
spikes in your environment. You can use the System Capacity – Incoming Mail page to track volume
growth over time and plan for system capacity. You might also want to compare the incoming mail data
with the sender profile data to view the trends in volumes of email messages that are sent from specific
domains to your network.
Note
An increased number of incoming connections may not necessarily affect system load.
System Capacity – Outgoing Mail
The System Capacity – Outgoing Mail page shows outgoing connections, the total number of outgoing
messages, the average message size, and the total outgoing message size. You can view the results for a
day, week, month, or year. It is important to understand the trends of normal message volume and spikes
in your environment. You can use the System Capacity – Outgoing Mail page to track volume growth
over time and plan for system capacity. You might also want to compare the outgoing mail data with the
outgoing destinations data to view the trends in volumes of email messages that are sent from specific
domains or IP addresses.
messages, the average message size, and the total outgoing message size. You can view the results for a
day, week, month, or year. It is important to understand the trends of normal message volume and spikes
in your environment. You can use the System Capacity – Outgoing Mail page to track volume growth
over time and plan for system capacity. You might also want to compare the outgoing mail data with the
outgoing destinations data to view the trends in volumes of email messages that are sent from specific
domains or IP addresses.
System Capacity – System Load
The system load report shows the overall CPU usage on the Email Security appliances. AsyncOS is
optimized to use idle CPU resources to improve message throughput. High CPU usage may not indicate
a system capacity problem. If the high CPU usage is coupled with consistent, high-volume memory page
swapping, you may have a capacity problem. This page also shows a graph that displays the amount of
CPU used by different functions, including mail processing, spam and virus engines, reporting, and
quarantines. The CPU-by-function graph is an indicator of which areas of the product use the most
resources on your system. If you need to optimize your appliance, this graph can help you determine
which functions may need to be tuned or disabled.
optimized to use idle CPU resources to improve message throughput. High CPU usage may not indicate
a system capacity problem. If the high CPU usage is coupled with consistent, high-volume memory page
swapping, you may have a capacity problem. This page also shows a graph that displays the amount of
CPU used by different functions, including mail processing, spam and virus engines, reporting, and
quarantines. The CPU-by-function graph is an indicator of which areas of the product use the most
resources on your system. If you need to optimize your appliance, this graph can help you determine
which functions may need to be tuned or disabled.
The memory page swapping graph shows how frequently the system must page to disk, in kilobytes per
second.
second.
Note About Memory Page Swapping
The system is designed to swap memory regularly, so some memory swapping is expected and is not an
indication of problems with your appliance. Unless the system consistently swaps memory in high
volumes, memory swapping is normal and expected behavior (especially on C150 appliances). To
improve performance, you may need to add Cisco Content Security appliances to your network or tune
your configuration to ensure maximum throughput.
indication of problems with your appliance. Unless the system consistently swaps memory in high
volumes, memory swapping is normal and expected behavior (especially on C150 appliances). To
improve performance, you may need to add Cisco Content Security appliances to your network or tune
your configuration to ensure maximum throughput.