Ian Cottrell c4206d458c internal/telemetry: change tracing to be event based ... We no longer use the span as the core type of tracing, instead that is an artifact of the exporter, and start and end tracing is just event based. This both makes the interface normalized, and also means the null exporter case is considerably cheaper in memory and cpu. See below for benchstat changes name old time/op new time/op delta TracingNoExporter-8 4.19µs ±12% 2.71µs ±11% -35.33% (p=0.000 n=20+20) Tracing-8 24.1µs ± 3% 5.1µs ±17% -78.66% (p=0.000 n=16+20) name old alloc/op new alloc/op delta TracingNoExporter-8 2.32kB ± 0% 0.40kB ± 0% -82.76% (p=0.000 n=20+20) Tracing-8 6.32kB ± 0% 2.32kB ± 0% -63.30% (p=0.000 n=20+20) name old allocs/op new allocs/op delta TracingNoExporter-8 35.0 ± 0% 15.0 ± 0% -57.14% (p=0.000 n=20+20) Tracing-8 215 ± 0% 35 ± 0% -83.72% (p=0.000 n=20+20) Change-Id: I3cf25871fa49584819504b5c19aa580e5dd03395 Reviewed-on: https://go-review.googlesource.com/c/tools/+/221740 Run-TryBot: Ian Cottrell <iancottrell@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>		2020-03-04 02:41:40 +00:00
..
ocagent	internal/telemetry: change tracing to be event based	2020-03-04 02:41:40 +00:00
prometheus	internal/telemetry: removing the concept of exporter lists	2020-02-26 21:51:01 +00:00
export.go	internal/telemetry: change tracing to be event based	2020-03-04 02:41:40 +00:00
id.go	internal/telemetry: change tracing to be event based	2020-03-04 02:41:40 +00:00
log.go	internal/telemetry: change tracing to be event based	2020-03-04 02:41:40 +00:00
trace.go	internal/telemetry: change tracing to be event based	2020-03-04 02:41:40 +00:00