Performance

On the Performance tab, the performance tuning of the CPU, sessions, memory (RAM), and document handling can be managed.

Reload Limits

Note: This option is just available when running only the QlikView Server, that is, not running the QlikView Publisher (QVP).

Max Concurrent Reloads

Sets how many documents that may be reloaded at any one time.

Note: Be careful not to set too many reloads simultaneously, as it may degrade the overall performance of the computer.

CPU

CPU Affinity

By default, the QlikView Server (QVS) automatically selects the processors to use on the hosting computer. It is possible to configure whether specific processors are to be used, or not. To deselect the use of a CPU, untick the corresponding check box. To select a CPU to use, tick the corresponding check box.

Note: This function must only be used when the default setting, that is, all CPUs are used, is purposefully to be overridden.

CPU Throttle

By default, the QlikView Server (QVS) is set to use 100% of the CPU capacity, that is, no throttling is used. It is possible to increase or decrease the priority of the QVS process, depending on how much CPU capacity the process is utilizing. In this way, some of the CPU capacity can be freed and used by other applications, improving the overall performance of the server. To set a threshold value, enter a suitable figure in this text box.

Note: If the server is dedicated for the QlikView Server, this function should not be used.
Note: Should the CPU utilization for the QlikView Server process exceed the set threshold, it is most likely because Windows considers more resources available.

Default value: 0 % (0 means no throttling).

Sessions

Maximum Number of Concurrent Sessions

For each document that a user opens on the QVS, a new user session is generated. It is possible to configure the maximum number of concurrent user sessions that are allowed on the QVS. To set the maximum number of concurrent user sessions, enter a suitable figure in this text box.

Note: If the server is dedicated for the QlikView Server, this function should not be used.
Note: This setting is not related to Client Access Licenses (CALs).

Default value: 5000 (an empty field means no limit).

Maximum Inactive Session Time

User sessions, which have had no activity during a specified time limit, can be configured to be closed by the QVS. To set the session timeout, enter a suitable figure in this text box.

Note: The maximum inactive session time can also be set per document. The session time with the lowest value takes precedence. If the session time entered in this text box is lower than the document session time, the document session time is disregarded.

Default value: 1800 seconds (0 is not allowed; empty means no limit).

Possible Session Timeout

User sessions, which have had no activity during a specified time limit, can be configured to be eligible for being closed by the QVS, if needed. To set the session timeout, enter a suitable figure in this text box.

Note: The QlikView Server may close inactive sessions and re-use the slot, if needed for other users.

Default value: 1800 seconds (0 is not allowed; empty means no limit).

Maximum Total Session Time

All user sessions, active or not, can be configured to be terminated by the QVS after a specified time limit. To set the session timeout, enter a suitable figure in this text box.

Default value: No limit (0 is not allowed; empty means no limit).

Working Set

The minimum and maximum of the physical amount of RAM that is allocated to, and can be used by, an application or process can be configured. This way it is possible to control whether an application can be swapped out of physical memory, or not.

Note: There are no guarantees that the operating system can host the process with the configured amount of memory.
Note: Using too high values will degrade the performance of other processes on the server. However, this might be desirable if the server is dedicated for the QlikView Server.
Note: It is assumed that the physical memory up to the Low limit is reserved for the QlikView Server.
Note: Do not change these settings unless being well acquainted with the Windows Virtual Memory Manager! Read more about working sets in the Microsoft Windows documentation.

Low

The minimum of the physical amount of RAM, in percentage, which can be used by an application. To set the minimum amount of memory, enter a suitable figure in this text box.

Note: If the use of RAM exceeds this value, Windows is allowed to swap the memory that the QlikView Server is using to disk.

Default value: 70 %.

High

The maximum of the physical amount of RAM, in percentage, which can be used by an application. To set the maximum amount of memory, enter a suitable figure in this text box.

Note: If the use of RAM exceeds this value, Windows should swap the memory that the QlikView Server is using to disk.

Default value: 90 %.

Document

Object Calculation Time Limit

The maximum amount of time that the QlikView Server will attempt to calculate a chart object can be configured. The time is set in seconds of total CPU time. To set the maximum amount of time, enter a suitable figure in this text box.

Note: The total CPU time is not the same as the elapsed real time on a computer with parallel processing technology.

Default value: 60 seconds (of total CPU time).

Max Symbols in Charts

The maximum number of symbols to plot in one chart can be configured. To set the maximum number of symbols, enter a suitable figure in this text box.

Default value: 100.

Allow Document Auto Load

It is possible to configure so that documents are automatically loaded and unloaded. To enable automated document loading and unloading, tick this check box. To disable automated document loading and unloading, untick this check box.

Availability (Source Documents)

Availability (User Documents)

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