Application load statistics

This help contains the following topics:

Introduction

Virtual server statistics

Real-time statistics

You can display real-time statistics for virtual servers.

Table-1 shows the information displayed on the virtual sever statistics page.

Table-1 Virtual server statistics

Item

Description

Virtual server name

Virtual server for which the statistics information is displayed.

State

Virtual server state:

  • Available.

  • Unavailable.

  • Disabled.

Connection count

Active

Number of active connections for the virtual server.

New

Average number of connections established with the virtual server per second.

Half-open

Number of half-open connections between the virtual server and client. This field is displayed for only TCP virtual servers.

Bandwidth (Kbps)

Outbound

Outbound bandwidth of the virtual server.

Inbound

Inbound bandwidth of the virtual server.

Click SSL offloading capability statistics to display SSL offloading real-time statistics.

Table-2 SSL offloading statistics

Item

Description

New connections

Number of new SSL offloading connections per second.

Active connections

Number of active SSL offloading connections.

Inbound bandwidth(bps)

Inbound bandwidth of SSL offloading.

Outbound bandwidth(bps)

Outbound bandwidth of SSL offloading.

Trends

This page displays the virtual server statistics over time.

You can specify the virtual server scope and statistics duration in the Statistics conditions section to display the following information:

To view virtual server trend statistics, you must first enable Load balancing | Virtual server trend statistics, Load balancing | Virtual server trend statistics(Web cache), Load balancing | Virtual server trend statistics(HTTP information), and Load balancing | Virtual server trend statistics(server status) on the System > Log Settings > Storage Space Settings page.

  1. Click the Monitor tab.

  2. In the navigation pane, select Trends > Virtual Server Trends.

  3. Click Select widgets and select one or multiple of the following trends:

    • Select Traffic trend to view the traffic trend of the specified virtual servers over time.

      Click the Set icon in the upper right corner of the widget to specify a traffic direction. Options are:

      • Uplink: Displays the uplink traffic of the specified virtual servers over time.

      • Downlink: Displays the downlink traffic of the specified virtual servers over time.

      • Total: Displays the total traffic of the specified virtual servers over time.

    • Select New connections trend to view the average number of connections established with the specified virtual servers per second.

    • Select Concurrent connections trend to view the number of active connections for the specified virtual servers.

    • Select Stability trend to view the stability trend of the specified virtual server.

      This widget displays the stability trend of only one virtual server.

    • Select Traffic compression ratio to view the ratio of compressed response traffic to the total response traffic on the specified virtual servers.

    • Select HTTP status code to view the status codes in the redirection messages that the specified virtual servers return.

    • Select Cache policy memory usage to view the ratio of the memory used by cache files to the idle memory space on the specified virtual server.

      This widget displays the memory usage of the cache policy on only one virtual server.

    • Select Cache policy hit ratio to view the ratio of r cache policy hits by requests to the total number of requests on the specified virtual servers over time.

    • Select Matching traffic ratio of cache policy to view the ratio of response traffic that matches the cache policy to the total response traffic on the specified virtual servers.

  4. Click Statistics conditions to set the conditions as shown in Table-3.

    Table-3 Virtual server statistics conditions

    Item

    Description

    Auto refresh

    Enable or disable auto refresh for the trend statistics page.

    After you enable this function, the device will automatically refresh the trend statistics page at the specified refresh intervals.

    Refresh interval

    Specify the interval to automatically refresh the trend statistics page.

    Virtual server scope

    Specify the virtual server scope for collecting trend statistics. Options are:

    • Top 3 virtual servers: Displays trend statistics for only the top 3 virtual servers.

    • Specify virtual servers: Displays trend statistics for the specified virtual servers.

    Duration

    Specify the duration for collecting trend statistics. Options are:

    • Last 10 minutes

    • Last hour

    • Last day

    • Last week

    • Last 30 days

    • Customize: You must set a specific duration.

  5. Click Start to enable the device to collect virtual server statistics based on the specified statistics conditions and display the trends.

Server farm statistics

Real-time statistics

Table-4 shows the information displayed on the sever farm statistics page.

Table-4 Server farm statistics

Item

Description

Server farm name

Server farm for which the statistics information is displayed.

State

Server farm state:

  • Available.

  • Unavailable.

Total real servers

Total number of real servers in the server farm.

Available real servers

Number of available real servers in the server farm.

Connection count

Active

Number of active connections for the server farm.

New

Average number of connections established with the server farm per second.

Total

Total number of connections for the server farm.

Total bandwidth (Kbps)

Total bandwidth of the server farm.

Packet count

Received

Number of packets received by the server farm.

Sent

Number of packets sent by the server farm.

Dropped

Number of packets dropped by the server farm.

HTTP packets

Received requests

Number of HTTP requests received by the server farm.

Dropped requests

Number of HTTP requests dropped by the server farm.

Sent responses

Number of HTTP responses sent by the server farm.

Dropped responses

Number of HTTP responses dropped by the server farm.

Traffic (bits)

Received

Data traffic received by the server farm.

Sent

Data traffic sent by the server farm.

Trends

This page displays the server farm statistics over time.

You can first select one or multiple trends in the Select widgets list, and then specify the server farm scope and statistics duration in the Statistics conditions section to view the selected trends.

To view server farm trend statistics, you must first enable Load balancing | Server farm trend statistics and Load balancing | Server farm trend statistics(server farm status) on the System > Log Settings > Storage Space Settings page.

  1. Click the Monitor tab.

  2. In the navigation pane, select Trends > Server Farm Trends.

  3. Click Select widgets and select one or multiple of the following trends:

    • Select Traffic trend to view the traffic trend of the specified server farms over time.

      Click the Set icon in the upper right corner of the widget to specify a traffic direction. Options are:

      • Uplink: Displays the uplink traffic of the specified server farms over time.

      • Downlink: Displays the downlink traffic of the specified server farms over time.

      • Total: Displays the total traffic of the specified server farms over time.

    • Select New connections trend to view the average number of connections established with the specified server farms per second.

    • Select Concurrent connections trend to view the number of active connections for the specified server farms.

    • Select Stability trend to view the stability trend of the specified server farm.

      This widget displays the stability trend of only one server farm.

  4. Click Statistics conditions to set the conditions as shown in Table-5.

    Table-5 Server farm statistics conditions

    Item

    Description

    Auto refresh

    Enable or disable auto refresh for the trend statistics page.

    After you enable this function, the device will automatically refresh the trend statistics page at the specified refresh intervals.

    Refresh interval

    Specify the interval to automatically refresh the trend statistics page.

    Server farm scope

    Specify the server farm scope for collecting trend statistics. Options are:

    • Top 3 server farms: Displays trend statistics for only the top 3 server farms.

    • Specify server farms: Displays trend statistics for the specified server farms.

    Duration

    Specify the duration for collecting trend statistics. Options are:

    • Last 10 minutes

    • Last hour

    • Last day

    • Last week

    • Last 30 days

    • Customize: You must set a specific duration.

  5. Click Start to enable the device to collect server farm statistics based on the specified statistics conditions and display the trends.

Real server statistics

Table-6 shows the information displayed on the real sever statistics page.

Table-6 Real server statistics

Item

Description

Real server name

Real server for which the statistics information is displayed.

State

Virtual server state:

  • Available.

  • Unavailable.

  • Service slow offline.

  • Service disabled.

  • Probe failed.

  • Ramp-up phase of slow online.

  • Busy.

  • Unknown.

IPv4 address

IPv4 address of the real server.

IPv6 address

IPv6 address of the real server.

Domain name

Domain name of the real server.

Connection count

Active

Number of active connections for the real server.

New

Average number of connections established with the real server per second.

Bandwidth (Kbps)

Outbound

Outbound bandwidth of the real server.

Inbound

Inbound bandwidth of the real server.

Trends

This page displays the real server statistics over time.

You can first select one or multiple trends in the Select widgets list, and then specify the real server scope and statistics duration in the Statistics conditions section to view the selected trends.

To view real server trend statistics, you must first enable Load balancing | Real server trend statistics and Load balancing | Real server trend statistics(Server status) on the System > Log Settings > Storage Space Settings page.

  1. Click the Monitor tab.

  2. In the navigation pane, select Trends > Real Server Trends.

  3. Click Select widgets and select one or multiple of the following trends:

    • Select Traffic trend to view the traffic trend of the specified real servers over time.

      Click the Set icon in the upper right corner of the widget to specify a traffic direction. Options are:

      • Uplink: Displays the uplink traffic of the specified real servers over time.

      • Downlink: Displays the downlink traffic of the specified real servers over time.

      • Total: Displays the total traffic of the specified real servers over time.

    • Select New connections trend to view the average number of connections established with the specified real servers per second.

    • Select Concurrent connections trend to view the number of active connections for the specified real servers.

    • Select Stability trend to view the stability trend of the specified real server.

      This widget displays the stability trend of only one real server.

    • Select HTTP delay trend to view the HTTP delay trend of the specified real servers over time. HTTP delay is the packet processing time on a real server. The lower the HTTP delay, the better the performance of the real server.

  4. Click Statistics conditions to set the conditions as shown in Table-7.

    Table-7 Real server statistics conditions

    Item

    Description

    Auto refresh

    Enable or disable auto refresh for the trend statistics page.

    After you enable this function, the device will automatically refresh the trend statistics page at the specified refresh intervals.

    Refresh interval

    Specify the interval to automatically refresh the trend statistics page.

    Real server scope

    Specify the real server scope for collecting trend statistics. Options are:

    • Top 3 real servers: Displays trend statistics for only the top 3 real servers.

    • Specify real servers: Displays trend statistics for the specified real servers.

    Duration

    Specify the duration for collecting trend statistics. Options are:

    • Last 10 minutes

    • Last hour

    • Last day

    • Last week

    • Last 30 days

    • Customize: You must set a specific duration.

  5. Click Start to enable the device to collect real server statistics based on the specified statistics conditions and display the trends.

URL visit statistics

The URL visit statistics shows the statistics of URLs accessed by users in a bar chart, pie chart, or list.

The administrator can set statistics conditions to rank URLs by virtual server or statistics node. Table-8 shows the statistics conditions.

Table-8 URL visit statistics conditions

Item

Description

Virtual server name

Counts the total number of URL accesses to a virtual server.

Statistics node name

Counts the total number of URL accesses to an HTTP statistics node that belongs to the specified virtual server.

Statistics period

Specifies the time period for collecting the total URL visit statistics.

Click Start to enable the device to collect URL visit statistics and rank URL accesses based on the specified statistics conditions.

TopN URL visit trends

The URL visit trends display information including the visit peak time ranges and the number of visits on URLs.

You can set statistics conditions to view URL visit trends for virtual servers, statistics nodes, and visit sources. Table-9 shows the statistics conditions.

Table-9 Statistics conditions for URL visit trends

Item

Description

Statistics object

Select a statistics object:

  • Virtual server.

  • Statistics node.

  • Visit source.

Time range

Specify the time range for collecting the URL visit statistics.

Table-10 URL visit trend statistics conditions for virtual servers

Item

Description

Query scope

Select a query scope:

  • Top 5 virtual servers—Provide URL visit trends for the top five most visited virtual servers.

  • Specify virtual servers—Provide URL visit trends for the specified virtual servers.

Virtual server name

Names of the virtual servers for which the URL visit trends are displayed.

This parameter is supported only when the query scope is Specify virtual servers.

Table-11 URL visit trend statistics conditions for statistics nodes

Item

Description

Virtual server name

Specifies a virtual server to obtain the URL visit trends for the statistics nodes on the virtual server.

Query scope

Select a query scope:

  • Top 5 statistics nodes—Provide URL visit trends for the top five most visited statistics nodes on the specified virtual server.

  • Specify statistics nodes—Provide URL visit trends for the specified statistics nodes on the specified virtual server.

Statistics node name

Names of the statistics nodes for which the URL visit trends are displayed.

This parameter is supported only when the query scope is Specify statistics nodes.

Table-12 URL visit trend statistics conditions for visit sources

Item

Description

Virtual server name

Name of the virtual server visited by the visit sources.

Statistics node name

Name of the statistics node visited by the visit sources.

Query scope

Select a query scope:

  • Top 5 visit sources—Display URL visit trends for the top five visit sources that visited URLs most.

  • Specify visit sources—Display URL visit trends for the specified visit sources.

Visit source name

Source address object group names or source IP addresses for which the URL visit trends are displayed.

This parameter is supported only when the query scope is Specify visit sources.

Click Start to enable the device to collect URL visit statistics based on the specified statistics conditions.

HTTP protection statistics

The HTTP protection statistics page shows attack record statistics and attack rankings in a bar chart or a list to help you understand the protection results of protection policies.

Attack records

The Attack Records tab displays information about attack traffic matching a protection policy, including attack duration, source IP address, URL, virtual server name, cookie name, protection action, attack times, and context.

You can click the icon for each column to specify criteria to filter attack records. You can also click Export to Excel to download the attack records on the current page.

Attack ranking

You can set statistics conditions to rank attack traffic. Table-13 shows the supported statistics conditions.

Table-13 Attack traffic statistics conditions

Item

Description

Ranking

Specifies the top N ranking: Top 5 or Top 10.

Count by

Specifies the counting type:

  • Source IP address.

  • URL.

Duration

Specifies the duration for collecting the total attack traffic statistics.

Click Start to enable the device to collect attack traffic statistics and rank attack traffic based on the specified statistics conditions.

vSystem support information

Support of non-default vSystems for this feature depends on the device model. This feature is available on the Web interface only if it is supported.