According to the latest report, exFAT (Extended File Allocation Table File System) is a file system suitable for flash memory introduced by Microsoft in Windows Embedded 5.0 and above.
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Moreover, the exFAT file system driver for the Linux kernel is getting better and better with new features, bug fixes, and continuous performance improvements.
It is worth mentioning that the latest Linux exFAT driver is an improvement brought by a Sony engineer who helped everyone greatly improve exFAT performance, and this patch should appear in the Linux 5.19 kernel this summer.
According to reports, when the exFAT file system is mounted in “dirsync” mode, this improvement greatly reduces the block request processing time when the cluster is zeroed, bringing about a 73% performance improvement (Sony engineer Mo Yuezhang tested in Arm tested on the platform).
With a cluster size of 256kb, the time to create 100 folders dropped directly from 11 minutes 22 seconds to 1 minute 39 seconds. For a cluster size of 64KB, the time to create 1000 directories also dropped from 3 minutes and 34 seconds to 56 seconds.
