Hi, sorry, but that is not a right way to assess thing like memory consumption.
Windows shows in a task manager just private memory (can not be used by other processes) usage for process. And that is really takes 15-20 Mb but just for separate renderer process. Main process (in case for example simplebrowser or minimal) needs around 30Mb of its own private memory and +5Mb for every renderer process (basically page by default). And there is also shared memory for all these processes (library itself, which is over 100Mb for webengine, and other resources): 40Mb for main process itself and then it goes to 80-90 with spawned rendereres. One can see all these numbers inside extended columns for shared/private/workingset memory inside detailed tab of a 'Task Manager', 'Resource Monitor' builtin tools or simple ProcessHacker guitool for Windows. So, for example, in case of offline html version of cppreference doc for c++: https://en.cppreference.com/w/Cppreference:Archives with 6 pages opened for basic_ostream it takes about this amount of memory: 30 + 6 * 5 + 15 * 6 + 80 = 230Mb Single process mode will make it a little bit better but still in a hundreds range. Btw, those who interested in displaying simple html pages with webengine and its memory costs could look at a practical application inside KDE: 'System Monitor' builtin tool there for looking at system processes and stats uses QtWebEngine by displaying simple fancy looking html for 'Detailed Memory Information' for every process. Regard ________________________________________ From: Development <development-boun...@qt-project.org> on behalf of Simon Hausmann <simon.hausm...@qt.io> Sent: Wednesday, June 26, 2019 13:47 To: Michal Klocek; development@qt-project.org Subject: Re: [Development] Assistant WebKit/WebEngine support Hi, From my earlier email: " I measured on Windows with a Qt Creator built with WebEngine support and surfed a little through the docs. The memory consumption of the web engine process weighed in between 14-20 MB of RAM." That number came from the task manager in Windows. Simon ________________________________ From: Development <development-boun...@qt-project.org> on behalf of Michal Klocek <michal.klo...@qt.io> Sent: Wednesday, June 26, 2019 13:31 To: development@qt-project.org Subject: Re: [Development] Assistant WebKit/WebEngine support Could you explain how did you measure web engine memory consumption to get 14-20MB of ram ? On 6/26/19 1:12 PM, Simon Hausmann wrote: > > Am 25.06.19 um 23:53 schrieb Konrad Rosenbaum: >> Option 4: convert to WebEngine >> Pros: looks great; currently supported browser engine, only little >> porting work >> Cons: horrible memory footprint; acute terminal featuritis; adds lots of >> dependencies (disqualifies it for most/many people redistributing it); >> does not work on all platforms supported by Qt (makes assistant less >> useful or even useless to those users); embedding in IDEs becomes much >> more difficult (dependencies and #ifdef's for unsupported platforms) > > > I'd really like to eliminate this myth of a "horrible memory footprint". > I sent an email earlier in this thread regarding this and presented > numbers that suggest otherwise for documentation content. > > > > Simon > > > _______________________________________________ > Development mailing list > Development@qt-project.org > https://lists.qt-project.org/listinfo/development > _______________________________________________ Development mailing list Development@qt-project.org https://lists.qt-project.org/listinfo/development _______________________________________________ Development mailing list Development@qt-project.org https://lists.qt-project.org/listinfo/development
