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

[mlelstv%serpens.de@localhost (Michael van Elst)]

The following reply was made to PR port-amd64/57266; it has been noted by GNATS.

From: mlelstv%serpens.de@localhost (Michael van Elst)
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: port-amd64/57266: Poor disk performance on VirtualBox vioscsi0 and NetBSD 10.0_BETA
Date: Mon, 13 Mar 2023 19:34:14 -0000 (UTC)

 bbartlomiej.mail%gmail.com@localhost (Bartek Krawczyk) writes:
 
 >Also even downloading (virtio net driver) is much faster: 7MB/s vs 
 >0,5MB/s on NetBSD but that is aprobably again constrained by slow disk I/O.
 
 I get about 7MB/s download, 25MB/s write to disk and finishing the untar
 task in 960 seconds. That's not virtualbox but qemu emulating
 an aarch64 CPU and which is completely CPU bound on the host (a 8 years
 old Xeon with SSD).
 
 N.B. the guest filesystem is mounted only with noatime option.
 
 So there must be something special with virtualbox.