Thank Dhruv for clarification, yes I feel ambiguity of using ALTO specific performance metrics, changing the term will alleviate my concern. Thanks!
In addition, I am wondering how ALTO server collects network performance or OAM information using OAM tools, e.g., decide the location of measurement point, schedule measurement task, decide which measurement method are invoked such as ping, or traceroute or invoke specific measurement functionalities in the underlying network. -Qin 发件人: Dhruv Dhody [mailto:[email protected]] 发送时间: 2022年7月9日 23:57 收件人: Qin Wu <[email protected]> 抄送: [email protected]; [email protected] 主题: Re: [alto] System and Service Performance Benchmarking vs Network Performance Exposure Hi Qin, This is meant to be more about to health of the ALTO server itself instead of that of the underlying network. This is to monitor the functioning of the ALTO protocol with various statistics and counters. Is the use of the term "ALTO-specific performance metrics", a source of confusion? We could change that... Thanks! Dhruv On Sat, Jul 9, 2022 at 8:10 PM Qin Wu <[email protected]<mailto:[email protected]>> wrote: Hi, All: In draft-ietf-alto-oam-yang-00, two YANG models have been defined: 1.ietf-alto.yang: focusing on server configuration 2.ietf-alto-stats.yang: focusing on performance monitor and logging and fault reporting I am not sure I understand the role or responsibility of the second model ietf-alto-stats.yang It seems the second yang module more looks into System and Service performance measurement based on requirements defined in section 3.4.3 of RFC7971: “ 3.4.3. System and Service Performance A number of interesting parameters can be measured at the ALTO server. [RFC7285] suggests certain ALTO-specific metrics to be monitored: o Requests and responses for each service listed in an Information Directory (total counts and size in bytes). o CPU and memory utilization o ALTO map updates o Number of PIDs o ALTO map sizes (in-memory size, encoded size, number of entries) This data characterizes the workload, the system performance as well as the map data. Obviously, such data will depend on the implementation and the actual deployment of the ALTO service. Logging is also recommended in [RFC7285]. ” ALTO sever doesn’t need to collect these information from its southbound interface or from the underlying network. Since ALTO server can expose Cost metric information to ALTO client, I am wondering how these network performance related cost metrics are collected, Doesn’t ALTO Server be triggered to initiate measurement task and collect the network performance information from the underlying network? Or these measurement task have been pre-provisioned. What do I miss? -Qin (Speak as individual) _______________________________________________ alto mailing list [email protected]<mailto:[email protected]> https://www.ietf.org/mailman/listinfo/alto
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