Flash filesystem (FFS) specialist Datalight Inc. will soon release a commercial Linux FFS claimed to provide 400 percent faster write performance and 500 percent faster mount speed compared to JFFS2. The new FFS will target Linux-based mobile phones, set-top boxes, and other embedded devices.
Datalight says its Reliance high-integrity filesystem and FlashFX Pro “intelligent flash media manager” were introduced in 1998, and have subsequently been deployed in devices by four major mobile handset makers as well in a variety of military, aerospace, and industrial applications. The new Linux FFS will reportedly support 200 flash components, including NAND, NOR, and fusion flash technologies, and flash memory controllers.
Datalight FlashFX FFS software architecture
Datalight claims that in early tests of its new Linux FFS it has measured mount times of 0.44 seconds on a 56 MB NAND flash chip, compared to 2.32 seconds for JFFS2 and 0.69 seconds for YAFFS2. Test results reportedly show raw sequential write speeds of 2.56MB/s for the Datalight FFS, compared to 0.63MB/s for JFFS2 and 1.09MB/s for YAFFS2. The company says its FFS products include “Dynamic Transaction Point” technology that allows device developers to tune system performance according to specific system designs.
The company claims that many of its existing customers have said they are “disappointed with the currently available [FFS] support” for Linux.
Unlike JFFS2 or YAFFS, Datalight’s Reliance and FlashFX Pro FFS technology is not open source. The Datalight FFS is also covered by a “patented transactional architecture that guarantees reliability and improves boot speeds,” according to the company.
Datalight supplies its FFS products as part of a Windows-hosted software development kit (SDK) that includes ANSI C source, a developer’s guide, an API reference, and validation utilities. The company says the SDK supports “any” 32-bit processor, and that in addition to the new Linux FFS, versions are available targeting Windows CE, VxWorks, and NucleusPLUS.
Datalight says its Reliance high-integrity filesystem and FlashFX Pro “intelligent flash media manager” were introduced in 1998, and have subsequently been deployed in devices by four major mobile handset makers as well in a variety of military, aerospace, and industrial applications. The new Linux FFS will reportedly support 200 flash components, including NAND, NOR, and fusion flash technologies, and flash memory controllers.
Datalight FlashFX FFS software architecture
Datalight claims that in early tests of its new Linux FFS it has measured mount times of 0.44 seconds on a 56 MB NAND flash chip, compared to 2.32 seconds for JFFS2 and 0.69 seconds for YAFFS2. Test results reportedly show raw sequential write speeds of 2.56MB/s for the Datalight FFS, compared to 0.63MB/s for JFFS2 and 1.09MB/s for YAFFS2. The company says its FFS products include “Dynamic Transaction Point” technology that allows device developers to tune system performance according to specific system designs.
The company claims that many of its existing customers have said they are “disappointed with the currently available [FFS] support” for Linux.
Unlike JFFS2 or YAFFS, Datalight’s Reliance and FlashFX Pro FFS technology is not open source. The Datalight FFS is also covered by a “patented transactional architecture that guarantees reliability and improves boot speeds,” according to the company.
Datalight supplies its FFS products as part of a Windows-hosted software development kit (SDK) that includes ANSI C source, a developer’s guide, an API reference, and validation utilities. The company says the SDK supports “any” 32-bit processor, and that in addition to the new Linux FFS, versions are available targeting Windows CE, VxWorks, and NucleusPLUS.
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