We're getting good results from http://traildb.io/ and we don't have to grant Facebook a worldwide, royalty-free license to our patent pool in order to use it.
https://github.com/facebookincubator/beringei#license says "We also provide an additional patent grant."
None of this sounds to me like you have to grant Facebook any patents to use Beringei.
We would love to hear how you are using TrailDB and what could be improved for your use case. Feel free to open issues in GitHub or drop by at our Gitter channel, https://gitter.im/traildb/traildb
That's exactly what we're using TrailDB for. Works great.
Individual events are typically hundreds to thousands of nanoseconds long, with about 20 nanoseconds of overhead to grab a timestamp using the rdtscp instruction.
Hope that helps!
We also do some hdr_histogram processing for our dashboard in parallel to storing traces in TrailDB, and then we retain the individual traces to do longer term processing or when we're tracking down issues in production.
• we track function entry/exit/throw, offset (in nanoseconds) from the initial timestamp, and in the case of a throw, we also capture a stack trace (which is not stored in TrailDB)
• our server is written in C++