Boot time after power failure can be a key requirement, especially in medical and military vertical markets. It is common for hardware managed media such as hard disk drives and eMMC to have a random I/O penalty due to disk thrashing and head movement. In these situations, Reliance Nitro has a mount time advantage where ext3 and ext4 will magnify the I/O penalty since they require random I/O to mount. Due to the transactional architecture of Reliance Nitro, there is no need to run integrity checks or rebuild a journal even after an unexpected power loss. The result is that Reliance Nitro consistently mounts the disk much faster than other file systems.

Reliance Nitro Mounts Faster

For read and write performance testing, we used a Digi ConnectCore board with an ARM 7 processor and a SanDisk 2GB SD card. For reads, Reliance Nitro performs as well as or better than the open source file systems when using the cache. On random and sequential reads of large files, Reliance Nitro and ext4 perform similarly and both outperform ext3.

Reliance Nitro Offers Strong Read Performance

File system writes are influenced by the block size. In the chart below you can see that all of the file systems tested are within less than 1 mb/second of each other. At smaller block sizes Reliance Nitro writes faster than ext4. At larger block sizes ext3 writes more quickly than both Reliance Nitro and ext4. In most use cases reads are more demanding than writes. Please contact us for an evaluation to test Reliance Nitro in your use scenario.

Reliance Nitro Offers Solid Write Performance

On hardware managed media, Reliance Nitro has solid performance relative to competitive products and has a significant mount time advantage.

View Software managed media performance

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