Hi Aroldo,

Sorry for the delay in responses.

>From the slow workflow tasks page, were you able to determine which REST 
API requests were taking a longer time?  My suspicion is that it could 
provide important clues as to what might be causing the slow behavior.  
 You also could look to make sure no specific errors are thrown in the UI 
or backend by using our troubleshooting 
guide: 
https://wiki.lyrasis.org/display/DSPACE/Troubleshoot+an+error#Troubleshootanerror-DSpace7.x(orabove)

We have recently had a similar report of performance issues when a Group 
has a very large number of 
EPersons: https://github.com/DSpace/DSpace/issues/9052  We're investigating 
this one, but I'm *not entirely sure* if this could be the same issue 
impacting you.  (From your later responses though you are implying that you 
think it could be related to how Groups are working.)

If we can narrow down which REST endpoint or scenario is causing the 
problem, then that makes it easier to reproduce on our end.   That'd allow 
us to create a ticket, so that I can assign it to someone to investigate 
further.  Basically, it'd be helpful if you could gather some clues as to 
what might be causing the issue.  Without those clues, it'll be very 
difficult for us to debug the problem.

Let us know if you have time to gather more clues.  If so, I'd recommend 
starting with the Troubleshooting guide & looking for errors or REST API 
calls (in your browser's DevTools "Network" tab) which are taking a very 
long time to respond.

Tim

On Tuesday, September 5, 2023 at 4:39:17 PM UTC-5 aro...@gmail.com wrote:

> We are back to Dspace 6 until we resolve the issues.
>
> Em sex., 1 de set. de 2023 às 14:58, Aroldo Rique Júnior <aro...@gmail.com> 
> escreveu:
>
>> Hello everybody
>> Our
>> Workflow tasks page is taking a long time to load, over a minute. 
>> Something similar also happens on the new item submission page.
>>
>> [image: image.png]
>>
>>
>>
>>
>> [image: image.png]
>>
>> My mpf-ui.json:
>> {
>>     "apps": [
>>         {
>>            "name": "mpf-ui",
>>            "cwd": "/dspace/mpf-ui/",
>>            "script": "dist/server/main.js",
>>            "instances": "-1",
>>            "exec_mode": "cluster",
>>   "node_args": "--max_old_space_size=2048",
>>            "env": {
>>               "NODE_ENV": "production"
>>            }
>>         }
>>     ]
>> }
>>
>> We currently have over 150,000 items, spread across 270 collections, 
>> spread across various communities and subcommunities.
>>
>> We created 3 groups of people, a group of Administrators, another one of 
>> Submitters and another one of Editors. These 3 groups are administrators, 
>> submitters and editors of all collections.
>>
>> [image: image.png]
>> [image: image.png]
>>
>> We've already increased the memory of Solr, Tomcat and the machine (SLES 
>> 15), but the slowness (and user complaints) continues...
>>
>> Att,
>>
>> Aroldo Rique
>>
>>
>>
>>
>>
>>
>>
>>
>>

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