trace

As we all know golang has give us the feature that convert proto to json with https://github.com/golang/protobuf/blob/master/jsonpb/encode.go ,and with encode.go ,we can define diffrent style like casesensitive , emit empty , json indent and so on , we can see [Customizing Protobuf JSON Serialization in Go](https://seb-nyberg.medi

It will be useful to have the help specific to use case.

Existing Behavior:
uftrace --help and uftrace replay --help gives the same help prompt.

New Behavior:
uftrace --help can give the help for entire application.
uftrace replay --help can give the help for uftrace replay only.

Reason:

1. This will help narrow down the options available for subprogra

At the moment of writing this issue, kubectl trace only supports X86-64 as target architecture.

The tool should be able to schedule bpftrace programs against all the architectures supported by bpftrace, that are X86-64 and arm64 (aarch64) see the Cmake definition.

To achieve that we n

It seems to me that UTC is selected for on the wire representation of time as well as in the database (jaegertracing/jaeger#712), which sort of makes sense, at least with a somewhat naive handling of timezones. However, I think that the Jaeger UI should support displaying times in the timezone local to the user, i.e. of the browser as to reduce the mental load when viewing