DymaxIO vs xfs_fsr

DymaxIO is Windows performance software from Condusiv for reducing I/O bottlenecks and improving application response times. It targets physical and virtual PCs and servers, cloud systems, and I/O-intensive applications such as MS-SQL. Condusiv says the product can return over 40% of lost throughput and deliver 30%+ latency and throughput improvement. IntelliWrite optimizes writes, while IntelliMemory uses idle available DRAM for read caching. The software runs automatically in the background, requires no reboot and is described as having near-zero overhead. Supported systems include Windows 7, 8, 8.1, 10 and 11, as well as Windows Server 2008 R2 through 2025. It is described as hypervisor and storage agnostic, with support for VMware ESX/ESXi, Hyper-V, Xen, SAN/NAS, local and all-flash storage, Azure and AWS environments. DymaxIO requires 3GB of physical memory per server or VM, with 4GB recommended for optimum caching. Its dashboard reports eliminated read and write I/O, storage I/O time saved, and hourly views across 13 metrics. Annual client, server and host licenses are listed, and a 30-day server trial is available.

xfs_fsr is a free Linux utility in the xfsprogs project that reorganizes mounted XFS filesystems one file at a time. It copies a target file to temporary storage, then atomically exchanges the data extents of the original and temporary files. With no arguments, it chooses files with the largest extent counts and attempts the top 10% on each pass. A default run lasts up to two hours and records its stopping point for later resumption. You can name filesystems or individual files, with one pass through each target. Targets must be mounted read-write; entries without that option are skipped. Files mapped in memory and files marked no-defrag are not processed. Reorganization needs enough free space to copy the target, with space less fragmented than the original. On quota-enabled systems, the owner also needs sufficient remaining file quota. The manual says system partitions generally do not need this utility and warns that moving bootloader files can prevent booting unless lilo is rerun before reboot.