On 01/06/2017 15:30, Peter Lieven wrote: > Hi, > > > i noticed a while ago that if I start a job like this in a vserver: > > dd if=/dev/zero of=/x bs=1M count=128 oflag=direct > > I see each of the 1M request splitted into 516096 + 516096 + 16384 bytes > with virtio-scsi > > If I use virtio-blk the request goes through with 1M size. > > Any idea whats the cause of this?
It may depend on memory fragmentation. Paolo
