I've been trying to debug this one and here are my findings so far... When debugging performance with the developer tools, the "Paint" event of the page is what is taking so long (between 3.5s to 5.5s (!!!) when I move from one place to another on the root canvas). Based on the release note of Firefox 59.0 [1], I see that there is something new for Mac users (Mike, are you also using a Mac?): "Improved graphics rendering using Off-Main-Thread Painting (OMTP) [2] for Mac users (OMTP for Windows was released in Firefox 58)".
So it seems to be related to this new feature(someone using Windows could help conf irming if it's also slow using Firefox 58.x.). I tried to find existing bugs but didn't find anything really relevant... [1] https://www.mozilla.org/en-US/firefox/59.0/releasenotes/ [2] https://mozillagfx.wordpress.com/2017/12/05/off-main-thread-painting/ 2018-04-03 16:00 GMT+02:00 Mike Thomsen <mikerthom...@gmail.com>: > I experienced it yesterday as well. I'm about to install a LTS version of > Firefox so I can keep going there. > > While someone from the UI side figures this out, I think it should be filed > as a bug report to Mozilla. > > On Sat, Mar 31, 2018 at 5:04 PM, Pierre Villard < > pierre.villard...@gmail.com > > wrote: > > > Just confirmed that behavior changed between Firefox 58.x and 59.x. > > I'll let our UI gurus find the root cause and will probably use Chrome in > > the meantime :) > > > > 2018-03-31 22:02 GMT+02:00 Pierre Villard <pierre.villard...@gmail.com>: > > > > > Hi guys, > > > > > > I'm running on master, using Firefox (59.0.2), and it seems it got > slower > > > to move around the canvas. In my case, I've around 10 PGs and around 50 > > > processors. When trying to move from one place to another at the root > > > level, it's really slow and movement is intermittent/broken (not > fluid). > > > When accessing the same NiFi with Chrome, no issue at all. > > > > > > Problem is... I've also tried with a NiFi 1.5.0 and a NiFi 1.3.0 I have > > > locally with various workflows, and it's the same with the older > > versions. > > > > > > Wondering if this could be related to the upgrade to Firefox 59.x. > > > > > > Has anyone experienced the same? > > > > > > I can try to downgrade to Firefox 58.x to confirm but wanted to check > > with > > > the community first. > > > > > > Thanks! > > > > > > > > > > > >
