disk usage in gtop does not change on FreeBSD with ZFS

Environment

• OS: FreeBSD
• Yarn version: v1.22.18
• Node version: v16.16.0
• gtop version: 1.1.3

Description

Hi,

I have installed gtop using yarn on two machines. One with ZFS and the other with UFS. The first one shows disk usage at 0% and the second one shows disk usage correctly.

I have used dd(1) to write 1 GiB of random data and I see the disk usage in gtop does not change. But while the random data is writing, gstat(8) shows the write/read.

UFS

ZFS