[Development] Assistant WebKit/WebEngine support

Lars Knoll lars.knoll at qt.io
Thu Jun 27 16:39:29 CEST 2019

> On 27 Jun 2019, at 08:25, Thiago Macieira <thiago.macieira at intel.com> wrote:
> On Wednesday, 26 June 2019 18:47:32 PDT Lars Knoll wrote:
>> Yes, Webengine uses some memory. But is that really a problem on developer
>> machines?
> Yes. I have 16 GB of RAM and 16 GB of swap. Sometimes Linux fails to suspend 
> to disk unless I quit either Creator, Firefox or Chromium.  Free memory isn't 
> completely the issue. Even with 6 GB free (after re-adding buffers/cache) and 
> 10 GB swap free, the suspend can fail. 

I don’t buy this.Qt  Webengine (one page) takes let’s say worst case 150M (I would believe it’s quite a bit less). That’s less than 1% of your available RAM.

The reason the browser is an issue is maybe because many developers tend to have hundreds of tabs open.

> Another issue is starting a VM. There are many things in our corporate network 
> that require a Windows, plus of course doing testing with MSVC. The moment you 
> have a 4GB+ VM running, Creator, Firefox, Chromium and KMail[*], it adds up. 
> So, yes, even on a developer's machine we shouldn't use too much.
> [*] KMail already starts a QtWebEngineProcess, but the main process is right 
> now consuming 950 MB of heap.

The complain to the KMail developers :)


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