tree a9502bcdca83a9cceee025c19822f80e67c1c076
parent a130d5e54cd8642d7e26584ed2e2f9d2285570be
author Dmitry Rusakov <dnrusakov@gmail.com> 1565203624 -0700
committer Ning Wang <nwang@twitter.com> 1565203624 -0700

Optimize hot spots in Stream Manager (#3322)

* Replace std::unordered_map with tsl::hopscotch_map in tuple-cache.h

* Replaced std::hash with a faster xxhash implementation to speedup the topology if it uses fields-grouping strategy

* Enabled O3 optimization level be default to guarantee all smart pointers are inlined

* xxhash migration has been rollbacked since its performance effect is negligible

* RETRY_ATTEMPTS bumped to 50 since Travis is slow