The mailing list for listmasters using Sympa

[Aaron Wyatt <address@concealed>]

Hi Steve-

We've got just over half your numbers:  4585 lists, with 489,924 subscribers and 193,944 unique subscribers.

We went from 5.3.3 to 6.1.17 last year.  Infrastructure is VMWare with decent SAN for the filesystem.  Two RHEL 6 VMs, one running the sympa web front end, filesystem components, and sendmail.  One backend hosting only the MySQL database.  Both are configured with 4GB RAM and two CPUs.  The front end sits behind a load balancer.

We picked this configuration hoping to have the flexibility to build sympa out as more of the innards were moved off the filesystem to the database.  I'm not up on the latest news but I'm kind of bummed to hear that plan isn't moving forward as expected.

I also don't have message I/O specs handy but just looking at server load alone I'd say we have plenty of room to grow.

aaron

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Aaron Wyatt
Collaborative Services

Boston College IT Services
address@concealed
617.552.1278
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On Tue, May 13, 2014 at 4:24 PM, Steve Rich <address@concealed> wrote:

Greetings,

We are currently running Sympa 5.4 at Duke University and I have been tasked with upgrading to the next major release, most likely 6.1.20.  I have heard from a variety of sources that the database message spooling paradigm does not scale well at all and that the 6.2 release will move back to filesystem message spooling.  My question to the Sympa-Users community is one concerning architecture.  

We currently have 5.4 running on one VM with 2 cores and 4GB of RAM.  This machine hosts 8,224 lists  with 830,895 total subscribers (386,845 unique).  At this time, I can not speak to the activity of those lists and subscribers.  We're working to get relevant message delivery rates at this time but don't have them yet.

Has anyone on this list had success with Sympa 6.1.x at this scale?  If so, what does your Sympa architecture look like?  What unique challenges did the upgrade present and how did you overcome them.

Thanks,

Steve Rich

IT Analyst

Enterprise Internet Services

Office of Information Technology

Duke University