Re: port-amd64/57266: Poor disk performance on VirtualBox vioscsi0 and NetBSD 10.0_BETA

[Jaromír Doleček <jaromir.dolecek%gmail.com@localhost>]

Can you please post the full dmesg of the virtual machine?

Can you also confirm what is the block size you used for the
filesystem on the sd device?

It's pretty odd that the incoming request from the SCSI subsystem
passes a 128k I/O, that shouldn't really happen.
The SCSI subsystem should enforce 64k minphys, but that might be done
only for raw I/O, not block I/O as used for the actual filesystem
operations with a buffer cache.

Jaromir