Re: QlikView RAM usage - Qlik Community

mohamed_ahid · ‎2015-02-27

Hi all,

can anyone explain me how qlikview server use the memory when we have severals applications and many user .

Simple Senario :

i have one application with 8GO of size deployed on my server (96 RAM 6 cores ).beside i have 40 users who can acces this application .Let's imagine thats user 1 connect to server .How the mermory is used int his case ?

After deconnecting from the server how the mermory is used also in this case ?

in the case of many users in the same time .how it works ?

how works sign in sign out ?

Thx lot

mukesh24 · ‎2015-02-27

Hi,

RAM = (RAMuser × No. users) + RAMinitial

Where

RAM〗initial = QVWsizedisk × FileSizeMultiplier; this is the initial RAM footprint for any application

RAM〗user =〖RAMinitial × userRAMratio; this is the RAM each incremental user consumes

QVWsizedisk = SourceData × (1 - CompressionRatio); this is the size, on disk, of a

QlikView file

Assumptions:

userRAMratio: range between 1%–10%

FileSizeMultiplier: range between 2–10

CompressionRatio: range between 20%–90%

mohamed_ahid · ‎2015-02-27

Thx for theses explications .

what do you mean by FileSizeMultiplier ? and how we calculate it ?

awhitfield · ‎2015-02-27

Hi there,

please see the attached:

mohamed_ahid · ‎2015-02-27

thx.

suppose that we have 4.8gb allocted for our application (4 gb of size + 3 user ).

what happened when all the user sign out ?

Anonymous · ‎2015-02-27

The memory will be released.

You can see that on Task Manager.

mohamed_ahid · ‎2015-02-27

i'v checked it out ,it's not released .

Are you sure about that ?

Because i'v seen on one of my last project , on the server it was required to have drain down's batch running on .

Anonymous · ‎2015-02-27

The process is not immediate.

works like System.GC on C# or System.gc() on java.

Report Inappropriate Content · ‎2015-02-27

Its released when needed.

QlikView RAM usage

QlikView Administration