Re: [ovirt-users] heavy webadmin

We have patches in review that should fix this in 3.6.5. The underlying problem is a couple of JavaScript memory leaks. Best wishes, Greg On Fri, Jan 8, 2016 at 10:41 AM, Nir Soffer <nsoffer(a)redhat.com&gt; wrote: > On Fri, Jan 8, 2016 at 4:42 PM, Alexander Wels <awels(a)redhat.com&gt; wrote: > > On Friday, January 08, 2016 04:29:47 PM Nir Soffer wrote: > >> On Fri, Jan 8, 2016 at 1:13 PM, Nathanaël Blanchet <blanchet(a)abes.fr&gt; > wrote: > >> > Hi all, > >> > > >> > Since I upgraded engine to 3.6, I noticed that the webadmin takes a > lot of > >> > ressources whatever is the browser. It can become very slow even for > small > >> > actions, like changing tabs or editing a vm. The browser activity > becomes > >> > intensive (100% of cpu) and the processor very hot with a increased > fan > >> > activity. I suppose javascript to be responsible of this behaviour. > Is > >> > there a way to reduce the resource allocated to the webadmin? > >> > (This is not a weakness of my laptop which is an i7 cpu with 16GB of > RAM) > >> > >> Sounds like https://bugzilla.redhat.com/1264809 > >> > >> It was closed because we could not reproduce it with current versions. > >> > >> I would try first to upgrade to latest 3.6 version, and if you can > reproduce > >> it, please reopen this bug. > >> > >> Alexander: can you advice on how to debug this? > >> > >> Nir > > > > If you are willing to spend some time helping us debug that would be > great as > > obviously we are unable to reproduce. If you have Chrome, can you open > the > > development tools (ctrl-shift-i) and go to the 'Profiles' tab. That > should give > > you the option to 'Collect Javascript CPU Profile' among other things. > Make > > sure you select that, and click start. Then go in the web admin and do > > something that makes your CPU spike. Let it go for a little bit doesn't > have > > to be long. > > > > Go back to the CPU profiles tab and click stop. That will generate a > profile and > > that profile will include the percentage of CPU usage per method. It > should be > > sorted by percentage. If you can take a screen shot of that and give me > the > > exact rpm version, I can use that to de-obfuscate the method name and > > hopefully get some useful information. > > You can also save such profile to file, and attach it to the bug. > > When I reorted this, this was also reproducible in Firefox, and both > profiles > are attached to the bug. > > Nir > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > -- Greg Sheremeta, MBA Red Hat, Inc. Sr. Software Engineer gshereme(a)redhat.com 919-741-4016