On 10/3/24 6:54 AM, Christoph Hellwig wrote: > For file: yes. The problem is when you have more files than buckets on > the device or file systems. Typical enterprise SSDs support somewhere > between 8 and 16 write streams, and there typically is more data than > that. So trying to group it somehow is good idea as not all files can > have their own bucket. > > Allowing this inside a file like done in this patch set on the other > hand is pretty crazy. I do agree that per-file hints are not ideal. In the spirit of making some progress, how about we just retain per-io hints initially? We can certainly make that work over dio. Yes buffered IO won't work initially, but at least we're getting somewhere. -- Jens Axboe
