On Thu, Mar 24, 2016 at 11:20:23AM +0200, Nikolay Borisov wrote: > On 03/24/2016 01:00 AM, Dave Chinner wrote: > > As it is, yes, the memory allocation problem is with the in-core > > extent tree, and we've known about it for some time. The issue is > > that as memory gets fragmented, the top level indirection array > > grows too large to be allocated as a contiguous chunk. When this > > happens really depends on memory load, uptime and the way the extent > > tree is being modified. > > And what about the following completely crazy idea of switching order > > 3 allocations to using vmalloc? I know this would incur heavy > performance hit, but other than that would it cause correctness issues? > Of course I'm not saying this should be implemented in upstream rather > whether it's worth it having a go for experimenting with this idea. It's not an option as many supported platforms which have extremely limited vmalloc space. Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
