Free Software Linux

"I regularly run and post various benchmarks comparing POHMELFS, NFS, XFS and Ext4, [the] main goal of POHMELFS at this stage is to be essentially as fast as [the] underlying local filesystem. And it is..." explained Evgeniy Polyakov, suggesting that the POHMELFS networking filesystem performs 10% to 300% faster than NFS, depending on the file operation. In particular, he noted that it still suffers from random reads, an area that he's currently focused on fixing. He summarized the new features found in the latest release:

"Read request (data read, directory listing, lookup requests) balancing between multiple servers; write requests are sent to multiple servers and completed only when all of them send an ack; [the] ability to add and/or remove servers from [the] working set at run-time from userspace; documentation (overall view and protocol commands); rename command; several new mount options to control client behaviour instead of hard coded numbers."

Looking forward, Evgeniy noted that this was likely the last non-bugfix release of the kernel client side implementation, suggesting that the next release would focus on adding server side features, "needed for distributed parallel data processing (like the ability to add new servers via network commands from another server), so most of the work will be devoted to server code."

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