https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 Log²: a cost-aware logging mechanism for performance diagnosis https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31844 Log², a cost-aware logging mechanism. Given a “budget” (defined as the maximum volume of logs allowed to be output in a time interval), Log² makes the “whether to log” decision through a two-phase filtering mechanism. In the first phase, a large number of irrelevant logs are discarded efficiently. In the second phase, useful logs are cached and output while complying with logging budget. In this way, Log² keeps the useful logs and discards the less useful ones. We have implemented Log² and evaluated it on an open source system as well as a real-world online service system from Microsoft. The experimental results show that Log² can control logging overhead while preserving logging effectiveness.]]> Wed 11 Apr 2018 13:44:54 AEST ]]> An empirical study on quality issues of production big data platform https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31795 Sat 24 Mar 2018 08:42:47 AEDT ]]>