Fragmentation affects the long-term performance of flash storage. In applications with intensive reading, writing, and rewriting of data, (such as cameras for autonomous driving) fragmentation may cause anything from small errors to critical system failure. Our automotive customers and partners come to us because they suspect the file system could be a root cause of problems such as frame loss, latency issues, and other performance concerns. What are the potential impacts of fragmentation on user experience? Some recent groundbreaking studies into flash memory performance have shown that fragmentation is a bottleneck for or cause for degrading performance. It’s also a factor we’ve currently been testing in our performance benchmarking lab. It generally occurs because there’s no space left to write new file content next to older file content. What is fragmentation?įragmentation happens when a file system lays out files in non-contiguous parts, or fragments. One additional factor Tuxera is currently testing is how fragmentation affects flash performance and lifetime. Specific factors that affect file system performance include file size, device partitioning, or the file system implementations themselves. File systems impact read and write performance of the storage, the integrity of the data stored, flash endurance or the lifetime of the memory hardware, and data and storage interoperability. It’s important for car makers and Tier-1 suppliers to choose their file system implementations wisely.
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