> You really should give your message a subject that indicates your > question/problem. It is not unusual for people to ignore messages > with no subject, unless it is a slow day.
That's what I get for copy/pasting from a forum posting :-/ > What else is the system doing when you are doing the test? System > load can have a drastic affect on drive access times. Also, don't > expect to get anywhere close to the raw speed when accessing more > then one drive at the same time. It's completely idle. From native Linux, I get over 100MB/s on all of them simultaneously (8 dd commands running at the same time, combined throughput of over 800MB/s in vmstat and from the dd timings). I can't do that anymore because that would ruin the fs I have on them, but my zfs performance speeds using zfs-fuse are a lot better than my zfs performance running solaris under virtualbox. > I cold be wrong, but I believe that vbox is still using the host OS > to access the drive. You also have more overhead when accessing the > drives. Yeah, it looks like vbox is pretty much all userspace, but I think that zfs-fuse is as well. Are there any performance tweaks for vbox's IO? Like I said, SATA wasn't working for me, and SCSI was a bit flaky, but maybe these are known issues and some dev has some code (s)he's like me to test out? I'm open to any suggestions. _______________________________________________ vbox-users mailing list [email protected] http://vbox.innotek.de/mailman/listinfo/vbox-users
