Open Stack

Or I think u can run keystone in wsgi+apache easily, thus getting u the multiprocess support via apache worker processes.

Sent from my really tiny device...

On Mar 22, 2013, at 10:47 AM, "Jay Pipes" <jaypipes at gmail.com> wrote:

> Unfortunately, Keystone's WSGI server is only a single process, with a
> greenthread pool. Unlike Glance, Nova, Cinder, and Swift, which all use
> multi-process, greenthread-pool-per-process WSGI servers[1], Keystone
> does it differently[2].
> 
> There was a patchset[3] that added multiprocess support to Keystone, but
> due to objections from termie and others about it not being necessary,
> it died on the vine. Termie even noted that Keystone "was designed to be
> run as multiple instances and load balanced over and [he felt] that
> should be the preferred scaling point".
> 
> Because the mysql client connection is C-based, calls to it will be
> blocking operations on greenthreads within a single process, meaning
> even if multiple greenthreads are spawned for those 200 incoming
> requests, they will be processed synchronously.
> 
> The solution is for Keystone to implement the same multi-processed WSGI
> worker stuff that is in the other OpenStack projects. Or, diverge from
> the deployment solution of Nova, Glance, Cinder, and Swift, and manually
> run multiple instances of keystone, as Termie suggests.
> 
> Best,
> -jay
> 
> [1] All pretty much derived from the original Swift code, with some Oslo
> improvements around config
> [2] Compare
> https://github.com/openstack/glance/blob/master/glance/common/wsgi.py
> with
> https://github.com/openstack/keystone/blob/master/keystone/common/wsgi.py
> [3] https://review.openstack.org/#/c/7017/
> 
> On 03/21/2013 07:45 AM, Kanade, Rohan wrote:
>> Hi,
>> 
>> I was trying to create 200 users using the keystone client. All the
>> users are unique and are created on separate threads which are started
>> at the same time. 
>> 
>> keystone is handling each request synchronously , i.e. user 1 is
>> created, then user 2 is created ...
>> 
>> Shouldnt  keystone be running  a greenthread for each request and try to
>> create these users asynchronously? 
>> like start creating user 1 , while handling that request, start creating
>> user 2 or user n... 
>> 
>> I have attached the keystone service logs for further assistance.
>> http://paste.openstack.org/show/34216/
>> 
>> ______________________________________________________________________
>> Disclaimer:This email and any attachments are sent in strictest
>> confidence for the sole use of the addressee and may contain legally
>> privileged, confidential, and proprietary data. If you are not the
>> intended recipient, please advise the sender by replying promptly to
>> this email and then delete and destroy this email and any attachments
>> without any further use, copying or forwarding
>> 
>> 
>> _______________________________________________
>> OpenStack-dev mailing list
>> OpenStack-dev at lists.openstack.org
>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
> 
> _______________________________________________
> OpenStack-dev mailing list
> OpenStack-dev at lists.openstack.org
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev