topic Memory leaks in custom visuals in Developer

Memory leaks in custom visuals

Anonymous — Thu, 16 Aug 2018 12:53:33 GMT

Hello,

I'm wondering if there is any memory leaks occuring in the update method. As far as I know, update method is recalled each time an event occured (filter for instance).

So normally, all the variables and dom existing on the update are cleaned and recalled.

I developed a custom visual that takes nearly 440 Mb of RAM, after several manipulations (filtering on dataview mainly) the Ram used keeps rising up ...

is it normal ? Is there any leak in custom visuals ?

thank you,

Re: Memory leaks in custom visuals

v-viig — Fri, 17 Aug 2018 06:48:33 GMT

There's a known issue with memory consumption. New API will resolve this issue (please expect a new release soon).

Important to note that custom visuals should not remove DOM for each update call since it produces memory leaks.

To void removing of DOM you should use D3-enter-update-exit flow or use another library that keeps DOM during modifications.

Ignat Vilesov,

Software Engineer

Microsoft Power BI Custom Visuals

pbicvsupport@microsoft.com

Re: Memory leaks in custom visuals

Anonymous — Fri, 17 Aug 2018 07:23:24 GMT

Okey I see, and will the new API solve this problematic of DOM causing memory leaks ? Because I'm using a library called Leaflet, its difficult to keep the same DOMs. since its all about maps.

Re: Memory leaks in custom visuals

v-viig — Mon, 20 Aug 2018 08:00:24 GMT

Yes, it will reduce memory consumption but you should also optimize your code in order not to remove DOM for each update call.

Ignat Vilesov,

Software Engineer

Microsoft Power BI Custom Visuals

pbicvsupport@microsoft.com