Conrad, That spinner icon appears anytime there is an outstanding HTTP request. In clustered mode, that request is received by the NCM and then replicated to each node. Once each node has responded a response is returned to the user. The requests in your case could have been slowed by a number factors. Obviously, the response to the user will only be as fast as the response from the slowest node. Additionally, if the request was mutable (would change the flow) it could have been slowed by other requests.
If you continue seeing issues, you can enable additional logging on the NCM and each node to print the response times and identify where exactly things are sluggish. Matt On Thu, Mar 3, 2016 at 6:58 AM, Conrad Crampton <conrad.cramp...@secdata.com > wrote: > Hi > Not using NAS mounts. Direct file system. The performance appears to have > improved (magically) with use – might be a javascript loading issue when I > first started it. Hopefully this was the cause and not something more > onerous. > Thanks for the suggestion – good to know in any case. > I’ll re-post in this thread if it comes back. > Regards > Conrad > > From: Jeremy Dyer <jdy...@gmail.com> > Reply-To: "users@nifi.apache.org" <users@nifi.apache.org> > Date: Thursday, 3 March 2016 at 11:54 > To: "users@nifi.apache.org" <users@nifi.apache.org> > Subject: Re: UI performance slow > > Conrad, > > I have seen this a few times before. NiFi has an internal actions H2 > database where it stores each update made to the workflow. Usually when > this happens the culprit is the UI is waiting on this operation to > complete. You wouldn't happen to be using NAS mounts for your > "database_repository" would you? > > Sent from my iPhone > > On Mar 3, 2016, at 5:37 AM, Conrad Crampton <conrad.cramp...@secdata.com > <conrad.cramp...@secdata.com>> wrote: > > Hi, > I have just upgraded my 6 node cluster to 0.5.1 and am experiencing slow > performance in the UI. > I can’t necessarily attribute this to the upgrade because: > > 1. I didn’t use the cluster particularly very much as I was > developing/ testing on my laptop, so I don’t know what performance was like > before. > 2. I have increased the number of nodes in the cluster from 3 to 6 > (just because I introduced Ansible into the mix to ease deployment) > > The issues I am experiencing are simple things like dragging processors > around, opening up dialogs (template list etc.). When doing these actions, > I get the little spinning circle next to the ‘stats last refreshed’ time. > Causing the UI experience to be a bit unhelpful. > > Anyone suggest some things to check to improve this? > > I am using the default bootstrap.conf file without any changes (other than > run.as=) > > Thanks > Conrad > > > SecureData, combating cyber threats > > ------------------------------ > > The information contained in this message or any of its attachments may be > privileged and confidential and intended for the exclusive use of the > intended recipient. If you are not the intended recipient any disclosure, > reproduction, distribution or other dissemination or use of this > communications is strictly prohibited. The views expressed in this email > are those of the individual and not necessarily of SecureData Europe Ltd. > Any prices quoted are only valid if followed up by a formal written quote. > > SecureData Europe Limited. Registered in England & Wales 04365896. > Registered Address: SecureData House, Hermitage Court, Hermitage Lane, > Maidstone, Kent, ME16 9NT > > > > ***This email originated outside SecureData*** > > Click here > <https://www.mailcontrol.com/sr/zraPR6eHOiDGX2PQPOmvUs3oG7lEfVxCxO4twiJ91PQGRmYoDUUj+7iBTIHiUs7clDZx+5TL0HMWkFyhp8LJ4g==> > to report this email as spam. >
