Keep an eye out for any "out of memory" errors in your NCMs nifi-app.log. On Mar 4, 2016 1:51 AM, "Conrad Crampton" <conrad.cramp...@secdata.com> wrote:
> Mark, Matt > Thanks for the greater understanding about what is happening beneath the > covers – always useful. > Conrad > > From: Mark Payne <marka...@hotmail.com> > Reply-To: "users@nifi.apache.org" <users@nifi.apache.org> > Date: Thursday, 3 March 2016 at 19:00 > To: "users@nifi.apache.org" <users@nifi.apache.org> > Subject: Re: UI performance slow > > Conrad, > > Just to provide a bit of clarification, when Matt says "You can enable > additional logging on the NCM", this is done by > adding the following to your $NIFI_HOME/conf/logback.xml on the NCM: > > <logger name="org.apache.nifi.cluster.manager.impl. > HttpRequestReplicatorImpl" level="DEBUG" /> > > Thanks > -Mark > > > On Mar 3, 2016, at 1:26 PM, Matt Gilman <matt.c.gil...@gmail.com> wrote: > > 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. >> > > >
