* Add support for zstd and split compression
Add support for using zstd as an alternative to native, lz4.
Upgrade lz4 to v1.9.4 (with ARM enhancements).
Allow for split compression algorithms - i.e. use native on journal, but lz4 on ledger.
* Switch to AdRoll zstd
Development appears to be active and ongoing. No issues running on different linux flavours.
* Use realistic bucket name
* Update README.md
* Switch branch
* Add comment following review
* Add performance/profiling test
Add test to perf_SUITE to do performance tests and also profile different activities in leveled.
This can then be used to highlight functions with unexpectedly high execution times, and prove the impact of changes.
Switch between riak_ctperf and riak_fullperf to change from standard test (with profile option) to full-scale performance test
* Change shape of default perfTest
* Change fullPerf
Change the fullPerf test to run more tests, but with fewer keys.
Given that RS of 512 is being pushed in Riak, 2M objects is till a 300M+ object cluster. 10M >> 1B. so these are still reasonable sizes to test.
A profilePerf test also added to generate all the profiles base don 2M objects.
* Extend test
Queries where previously all returning a large number of index entries - changes made to make number of entries per query more realistic. Also an update process added to show difference between loading and rotating keys.
* Relabel as AAE fold
* Test v5
Test mini-queries - where generally a small number of entries are returned
* Default to ctperf
Resolve issue with OTP 22 performance https://github.com/martinsumner/leveled/issues/326 - by changing refernces to loop state.
The test perf_SUITE proves the issue.
OTP 22, without fixes:
Fold pre-close 41209 ms post-close 688 ms
OTP 22, with fixes:
Fold pre-close 401 ms post-close 317 ms
