WineFS
Rohan Kadekodi, Saurabh Kadekodi, Soujanya Ponnapalli, Harshad Shirwadkar, Gregory R. Ganger, Aasheesh Kolli, Vijay Chidambaram
Abstract
Modern persistent-memory (PM) file systems perform well in benchmark settings, when the file system is freshly created and empty. But after being aged by usage, as will be the normal mode in practice, their memory-mapped performance degrades significantly. This paper shows that the cause is their inability to use 2MB hugepages to map files when aged, having to use 4KB pages instead and suffering many extra page faults and TLB misses as a result.
Topics & Concepts
Translation lookaside bufferComputer scienceBenchmark (surveying)Operating systemMode (computer interface)Parallel computingFile systemSemiconductor memoryPhysical addressGeodesyGeographyAdvanced Data Storage TechnologiesParallel Computing and Optimization TechniquesDistributed and Parallel Computing Systems