Pavel Narozhniy wrote: > Does anybody heard about SGI releasing XFS source code?
Yup, they're doing it. I would guess that FreeBSD would need a fairly thorough revamp of its handling of kernel memory allocation before XFS would be fully usable, though: XFS buffer management is pretty full-on. The filesystem maintains its own pool of kernel buffers separate from the VM page cache which it uses for aggregating I/O transfers (so that if, say, you make 5 separate out-of-order I/Os which just happen to blanket a contiguous region of a disk object, XFS will collapse them into a single I/O; it'll also take small contiguous regions (extents) and remap them into the next-power-of-two extent size as they grow. I know I could probably see by looking at the source, but does FreeBSD still impose a 64k limit on physical I/O operations? That'll have to go too... - mark ---- Mark Newton Email: new...@internode.com.au (W) Network Engineer Email: new...@atdot.dotat.org (H) Internode Systems Pty Ltd Desk: +61-8-82232999 "Network Man" - Anagram of "Mark Newton" Mobile: +61-416-202-223 To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-hackers" in the body of the message
