On Tue, Aug 20, 2013 at 9:58 AM, Justin Sherrill <[email protected]> wrote: > On Mon, Aug 19, 2013 at 3:55 AM, Dongsheng Song > <[email protected]> wrote: >> I found this VM is very very slowly, then I check the dmesg output, >> I'm very surprised: >> >> da0: 3.300MB/s transfers > > This may be a capability report that's in error, rather than the > actual speed. Can you test the actual speed of writing to disk with > dd or something similar?
Test on: DragonFly v3.5.0.787.g79034-DEVELOPMENT (X86_64_GENERIC) #0: Tue Aug 20 08:58:36 CST 2013 # dd if=/dev/zero bs=8m count=128 of=/tmp/1G.img 128+0 records in 128+0 records out 1073741824 bytes transferred in 258.330393 secs (4156467 bytes/sec) 4156467 bytes/sec = 3.964 MB/s
