On 11/21/2018 7:48 AM, Hideyuki Yamashita wrote: > Hello, > > I have some basic questions about telemetry API > which is planned to be relaesed in 18.11. > > Note that I have read the follwoing document. > https://doc.dpdk.org/guides/howto/telemetry.html > > Q1. In general dpdk application use polling when > receiving packets. So CPU usage is always looks 100% > when measured using e.g. vmstat even if there is no packet receiving. > (CPU is busy for polling packets) > Is that correct? > > Q2. Is it correct understanding that dpdk application > can send "any" value(or metric) to client if client > requested via "telemetry" framework? > > Q3.Is it possible to query "real cpu usage" from dpdk > application using "telemetry" framework? > ("real cpu usage" I mean if 0 pakcket incoming, > cpu usage indicates almost 0 %) > > Q4. Is it possible to inform client about fault or some > trouble from dpdk application? > > Background I ask above is that > - I am relative new to DPDK world and have almost no knowledge about > "telemetry" > - I am interested in how dpdk applications can "scales" on platform > like OpenStack. I think some mesurement mechanism required > and I thought it might be "telemetry" APIs.
Briefly I think yes, telemetry can be measurement mechanism and interface to external application. Cc'ed Harry & Kevin for more detailed answers. > > Thanks in advance. > > BR, > Hideyuki Yamashita > NTT TechnoCross > >
