Merge pull request #2841 from glevkovich/memory_management_dev1_pr2

Memory management dev1 pr2

clientservice, trc: refactor (shorten) use of std::chrono members

throughput: fix bug in DurationTracker::stop()

In order to reuse totalDuration() from stop(), need to pass do_reset.

after rebasing on master and pushing 1st external PR

Removed 5 hashes, this is the real start of dev_2. we are broken - te…

…st fail

After rebase over 1201e8a, no build issues. All conflicts solved. ver…

…y basic tests pass.

end of dev_1, before rebasing fast-froward and opening dev_2