Hi Pierre,

we saw this issue with chrome as well in our systems.
Switching to Firefox solves the problem but i would like to track this issue.
Do you have a github issue for me or apache jira ticket?

Regards,
Christian

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
Pierre Villard <[email protected]> schrieb am Samstag, 4. September 
2021 um 11:07:

> Hi,
> 

> There is a known issue with Chromium right now that affects the performances 
> when rendering the components. That could be the reason. For Chrome, it is 
> for Chrome 92.x.Just as a side note: a flow with 50 processors is a *very* 
> small flow and should not be causing any issue under normal circumstances.
> 

> Pierre
> 

> Le ven. 3 sept. 2021 à 19:42, Jean-Sebastien Vachon <[email protected]> 
> a écrit :
> 

> > Hi Mark,
> > 

> > thanks for the quick response. I am running a single stand-alone Nifi 
> > instance (1.13.2)I tried with a smaller group (1 input port and 8 
> > processors), and I still experience slow downs.
> > 

> > I've looked at the timing of the backend calls and everything seems in 
> > order.
> > 

> > I am using Edge but some of my colleagues are using Firefox/Chrome and 
> > experienced the same.
> > 

> > One of the flows we are dealing with is relatively complex and involves 
> > about 50 processors. I will try to split it into smaller groups and see how 
> > it goes.
> > 

> > Thanks
> > 

> > Jean-Sébastien Vachon
> > Co-Founder & Architect
> > Brizo Data, Inc.
> > 

> > www.brizodata.com
> > 

> > From: Mark Payne <[email protected]>
> > 

> > Sent: Friday, September 3, 2021 1:19 PM
> > 

> > To: [email protected] <[email protected]>
> > 

> > Subject: Re: UI is not as responsive...
> > 

> > Jean-Sebastien,
> > 

> > Are you running a cluster or a single, stand-alone nifi instance? The 
> > slowness could be either on the backend (performing the action and 
> > formulating the response to the UI) or on the UI end, where it has to 
> > render everything.
> > 

> > One thing you can do to help understand which is causing the slowness is to 
> > create a new, empty process group and then step into it. Is the UI still 
> > sluggish when you’re in that process group, or is the UI faster there? 
> > Also, which browser are you using?
> > 

> > Thanks-Mark
> > 

> > Sent from my iPhone
> > 

> > > On Sep 3, 2021, at 1:03 PM, Jean-Sebastien Vachon 
> > > <[email protected]> wrote:
> > 

> > > Hi all,
> > > 

> > > The UI has been slowing down considerably over the last few days/weeks. I 
> > > tried restarting Nifi but it does not really make any difference.I tuned 
> > > the JVM and there is no sign of heavy GC going on.
> > > 

> > > What other things should I investigate? There is currently around 4.2 MB 
> > > of data in all my flows... so not much going on and it is still slow.
> > > 

> > > My server as 128 CPUs and 512GB of Ram of which 15 are allocated to Nifi. 
> > > I do have other processes running but nothing to cause any slowdown.The 
> > > load on the server is around 25 and is 98.5% idle. There is nothing going 
> > > on regarding storage as well.
> > > 

> > > Thanks
> > > 

> > > Jean-Sébastien Vachon
> > > Co-Founder & Architect
> > > Brizo Data, Inc.
> > > 

> > > www.brizodata.com

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