On 2 February 2017 at 10:08, Sean Dague <s...@dague.net> wrote: > On 02/02/2017 12:49 PM, Armando M. wrote: > > > > > > On 2 February 2017 at 08:40, Sean Dague <s...@dague.net > > <mailto:s...@dague.net>> wrote: > > > > On 02/02/2017 11:16 AM, Matthew Treinish wrote: > > <snip> > > > <oops, forgot to finish my though> > > > > > > We definitely aren't saying running a single worker is how we > recommend people > > > run OpenStack by doing this. But it just adds on to the > differences between the > > > gate and what we expect things actually look like. > > > > I'm all for actually getting to the bottom of this, but honestly real > > memory profiling is needed here. The growth across projects probably > > means that some common libraries are some part of this. The ever > growing > > requirements list is demonstrative of that. Code reuse is good, but > if > > we are importing much of a library to get access to a couple of > > functions, we're going to take a bunch of memory weight on that > > (especially if that library has friendly auto imports in top level > > __init__.py so we can't get only the parts we want). > > > > Changing the worker count is just shuffling around deck chairs. > > > > I'm not familiar enough with memory profiling tools in python to know > > the right approach we should take there to get this down to > individual > > libraries / objects that are containing all our memory. Anyone more > > skilled here able to help lead the way? > > > > > > From what I hear, the overall consensus on this matter is to determine > > what actually caused the memory consumption bump and how to address it, > > but that's more of a medium to long term action. In fact, to me this is > > one of the top priority matters we should talk about at the imminent PTG. > > > > For the time being, and to provide relief to the gate, should we want to > > lock the API_WORKERS to 1? I'll post something for review and see how > > many people shoot it down :) > > I don't think we want to do that. It's going to force down the eventlet > API workers to being a single process, and it's not super clear that > eventlet handles backups on the inbound socket well. I honestly would > expect that creates different hard to debug issues, especially with high > chatter rates between services. >
I must admit I share your fear, but out of the tests that I have executed so far in [1,2,3], the house didn't burn in a fire. I am looking for other ways to have a substantial memory saving with a relatively quick and dirty fix, but coming up empty handed thus far. [1] https://review.openstack.org/#/c/428303/ [2] https://review.openstack.org/#/c/427919/ [3] https://review.openstack.org/#/c/427921/ > > -Sean > > -- > Sean Dague > http://dague.net > > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev >
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