This makes keys a pointer, which reduces the allocations during logging, and has
a significant improvement in memory and cpu cost when there is no exporter.
Packing a string into an interface requires a 16 byte allocation, packing a pointer
does not.
name old time/op new time/op delta
/LogNoExporter-8 4.39µs ± 2% 3.83µs ± 2% -12.74% (p=0.000 n=18+20)
/Log-8 23.5µs ± 2% 22.6µs ± 1% -4.20% (p=0.000 n=19+18)
name old alloc/op new alloc/op delta
/LogNoExporter-8 1.70kB ± 0% 1.38kB ± 0% -18.78% (p=0.000 n=20+20)
/Log-8 4.91kB ± 0% 4.91kB ± 0% ~ (p=1.000 n=20+20)
name old allocs/op new allocs/op delta
/LogNoExporter-8 83.0 ± 0% 63.0 ± 0% -24.10% (p=0.000 n=20+20)
/Log-8 163 ± 0% 163 ± 0% ~ (all equal)
Change-Id: Iec127f1bff8d5c8f4bd0a6d9f6d8fc4b8bc740b2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222599
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This is a straight move of some code with no changes.
It splits the part of the telemetry code that will become a standalone library from the bit that belongs in the lsp.
Change-Id: Icedb6bf1f3711da9251450531729984df6df7787
Reviewed-on: https://go-review.googlesource.com/c/tools/+/190403
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This provides the basic support for aggregating stats into useful metrics,
utilizing tags.
This change also adds the standard rpc metrics for the stats the jsonrpc2 system
is already filling in.
Change-Id: Ibe1b64c4c4c587dacd53112454606634e9f682ce
Reviewed-on: https://go-review.googlesource.com/c/tools/+/185342
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
