On 4/13/23 13:35, Roberto Bartzen Acosta wrote: > Hey folks, > > I've been reading some docs about parser acceleration for json and I thought > of the ovsdb case. I already had serious performance issues with ovsdb in > large-scale deployments. I noticed was that most of the processing was > related to ovsdb tasks. > > Do you have any idea if any acceleration routine using vectorized > classification concepts/SIMD as presented in this article [1]/project[2] > would be applicable to the case of JSON RPC parsers? > > Maybe Ilya, who knows more deeply about ovsdb approach and who evaluates > performance using the ovn-heater can contribute here. > > [1] - https://arxiv.org/abs/1902.08318 <https://arxiv.org/abs/1902.08318> > [2] - https://github.com/simdjson/simdjson > <https://github.com/simdjson/simdjson> > > Kind regards, > Roberto
Hi. Thanks for interesting links! It might certainly be possible to improve the performance of a JSON parser with more compiler hacks and SIMD instructions. However, in my experience, the parser itself doesn't really show up in testing as a big performance bottleneck. Especially after some good changes made last year by Rosemarie: https://github.com/openvswitch/ovs/commit/2f16123c1bf0793381683ede3d63ae6da379d9b7 So, making it faster may not worth the cost of increased code complexity. The main challenges in ovsdb-server these days are mostly related to filtering large amounts of data and sending it out, not really the JSON parsing, AFAIK. Best regards, Ilya Maximets. _______________________________________________ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
