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 > <mailto: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 <mailto:jdy...@gmail.com>> > Reply-To: "users@nifi.apache.org <mailto:users@nifi.apache.org>" > <users@nifi.apache.org <mailto:users@nifi.apache.org>> > Date: Thursday, 3 March 2016 at 11:54 > To: "users@nifi.apache.org <mailto:users@nifi.apache.org>" > <users@nifi.apache.org <mailto: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 > <mailto: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: >> 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. >> 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 <http://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. > >
