Hello Aleksandr, Thank you for your efforts and sharing this.
Looking closer to figures, I can assume that lightweight session won't help us a lot, but will introduce additional complexity. So, I'm marking the BP as Obsolete. Ilya Sviridov isviridov @ FreeNode On Mon, Sep 29, 2014 at 1:21 PM, Aleksandr Chudnovets < achudnov...@mirantis.com> wrote: > Hello team, > > As it was discussed on IRC meeting yesterday I’m glad to share the results > of my testing of performance impact of PKI token validation. > > My research is connected with bp [1] about adding lightweight session to > mdb for improvement overall performance. > > For my tests I used PKI tokens with and without service catalog. > > (Actually, PKI tokens is only option for MagnetoDB, because MagnetoDB > > was designed to handle huge amount of requests per second.) > > Here is my results: > > - for lightweight requests, like list_tables, we can get 5% - 8% > performance boost using tokens without service catalog; > > - for big and slow requests, like batch_write, performance boost is > smaller. > > - disabling keystone support in api-paste gives us 20% performance boost > for PKI tokens :) > > So it can be good practice for MagnetoDB clients to use PKI tokens without > > service catalog. > > Another conclusion I can made, the PKI token validation works fast enough > and adding additional session mechanism won’t give big performance boost. > > Please share your views. > > [1] https://blueprints.launchpad.net/magnetodb/+spec/light-weight-session > > Thanks, > > Aleksandr Chudnovets >
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