On Wed, Aug 21, 2013 at 5:12 AM, Bryan Vyhmeister <[email protected]> wrote: > On Aug 20, 2013, at 14:05, Justin Sherrill <[email protected]> wrote: > >> On Mon, Aug 19, 2013 at 10:15 PM, Dongsheng Song >> <[email protected]> wrote: >> >>> 4156467 bytes/sec = 3.964 MB/s >> >> I don't have a good answer for you other than that it's not endemic to >> DragonFly - this is what I got under VMWare Workstation: >> >> 1073741824 bytes transferred in 24.643408 secs (43571158 bytes/sec) >> >> - Which is about 10 times your rate. I get the same 3.300MB/sec >> transfers notice in my dmesg, so it may be something with the >> underlying disk. > > Perhaps this has already been addressed but normal hard disks under VMware > ESXi are dreadfully slow unless you have a battery-backed RAID controller. > I've done local testing with SSDs instead which pretty much alleviates the > speed issues but gives no redundancy. > > Bryan
I don't think this is a battery issue, since Linux guest in the same ESXi host give me very good results: root@CRM-SYSLOG:~# dd if=/dev/zero bs=8M count=128 of=/tmp/1G.img 128+0 records in 128+0 records out 1073741824 bytes (1.1 GB) copied, 2.10386 s, 510 MB/s root@CRM-SYSLOG:~# dd if=/dev/zero bs=8M count=128 of=/tmp/1G.img 128+0 records in 128+0 records out 1073741824 bytes (1.1 GB) copied, 7.08881 s, 151 MB/s root@CRM-SYSLOG:~# dd if=/dev/zero bs=8M count=128 of=/tmp/1G.img 128+0 records in 128+0 records out 1073741824 bytes (1.1 GB) copied, 6.85367 s, 157 MB/s
