Event Type
Paper
File Systems
I/O
NVRAM
Storage
TimeThursday, November 16th1:30pm -
2pm
Location402-403-404
DescriptionThe byte-addressable non-volatile memory (NVM) is new
promising storage medium. Compared to NAND flash memory,
the next-generation NVM not only preserves the
durability of stored data but has much shorter access
latencies. An architect can utilize the fast and
persistent NVM as an external disk cache. Regarding the
system’s crash consistency, a prevalent journaling file
system needs to run atop an NVM disk cache. However, the
performance is severely impaired by redundant efforts in
achieving crash consistency in both file system and disk
cache. Therefore, we propose a new mechanism called
transactional NVM disk cache (Tinca). In brief, Tinca
jointly guarantees consistency of file system and disk
cache and removes the performance penalty of file system
journaling with a lightweight transaction scheme.
Evaluations confirm that Tinca significantly outperforms
state-of-the-art design by up to 2.5x in local and
cluster tests without causing any inconsistency
issue.
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