On Mon, Apr 13, 2009 at 10:33 PM, Mike Christie <micha...@cs.wisc.edu> wrote: > I think linux is just not so good with smaller IO sizes like 4K. I do > not see good performance with Fibre Channel or iscsi.
Most people run a filesystem on top of a block device imported via open-iscsi. It is well known that a filesystem performs I/O to the underlying block device using block sizes between 4 KB and 64 KB, with a significant fraction being 4 KB I/O's. If there was a performance problem in Linux with regard to small block sizes, filesystem performance in Linux would suffer. I have not yet seen statistics that show that Linux' filesystem performance is worse than for other operating systems. But I have already seen measurements that show the contrary. Bart. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "open-iscsi" group. To post to this group, send email to open-iscsi@googlegroups.com To unsubscribe from this group, send email to open-iscsi+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/open-iscsi -~----------~----~----~----~------~----~------~--~---
