[OOD-users] Question on scaling and performance

[Franz, Eric]

Morgan,

Part of the reason for the small use of memory compared to number of users served is possibly due to Passenger killing worker processes after 5 minutes of inactivity, which means those Rails and NodeJS apps aren't all running in the background, just listening. A snapshot just now showed on our production node 60 running NGINX processes, 75 Passenger apps, 7.8 G memory in use.

So that is not the same as 400 users active at the same time.

Thanks,
Eric

---
Eric Franz, Senior Web & Interface App Engineer
Ohio Supercomputer Center
An Ohio Technology Consortium (OH-TECH) Member
1224 Kinnear Road
Columbus, OH 43212
email: efranz at osc.edu

On 10/18/18, 2:16 PM, "OOD-users on behalf of Franz, Eric via OOD-users" <ood-users-bounces at lists.osc.edu on behalf of ood-users at lists.osc.edu> wrote:

    Morgan,
    
    In the previous webinar https://figshare.com/articles/Customizing_and_Extending_OnDemand/6225803 see slides 4 & 5. Summary: we are averaging around 300-400 users per month and average memory usage 2.8 GB with peak usage at any time 11.2 GB.
    
    We have not addressed scaling concerns yet in OnDemand, however, so if you run into problems we would be happy to work with you. Part of the Open OnDemand 2.0 project (CSSI) is to add support for horizontal scaling (and scaling in general).
    
    I can follow up late next week with more details.
    
    Thanks,
    Eric
    
    ---
    Eric Franz, Senior Web & Interface App Engineer
    Ohio Supercomputer Center
    An Ohio Technology Consortium (OH-TECH) Member
    1224 Kinnear Road
    Columbus, OH 43212
    email: efranz at osc.edu
    
    On 10/18/18, 11:53 AM, "OOD-users on behalf of mludwig via OOD-users" <ood-users-bounces+efranz=osc.edu at lists.osc.edu on behalf of ood-users at lists.osc.edu> wrote:
    
        Hello all,
        
        I was wondering if I could get some feedback from others who have 
        implemented OOD at a larger scale regarding hardware needs for the OOD 
        head node. What is 100 users like? 500? I am trying to prepare a scaling 
        plan for my local deployment.
        
        Thanks in advance!
        
        Morgan
        
        _______________________________________________
        OOD-users mailing list
        OOD-users at lists.osc.edu
        https://lists.osu.edu/mailman/listinfo/ood-users
        
    
    _______________________________________________
    OOD-users mailing list
    OOD-users at lists.osc.edu
    https://lists.osu.edu/mailman/listinfo/ood-users