On Tue, Feb 8, 2011 at 3:11 AM, Daniel Braniss <da...@cs.huji.ac.il> wrote:
> > Using the native Vbox iscsi initiator for very simple tests I'm getting > > slightly less than 20 MB/s write speed and VM takes a long time to boot > > because of DMA LBA errors are being reported on the iscsi/sata disk. > > > > If I mount the iscsi on the host, I get close to 50 MB/s and then if I > map > > that to a Virtualbox raw disk, and stick in a VM I get around 42 MB/s > write > > speed. I haven't done any tuning on iscsi target so perhaps that could > > improve things, but I'm concerned about the huge drop off in performance > and > > reliability issues with the Vbox native version. Does anyone have > insight > > into this? > > > > virtualbox-ose-3.2.12 > > istgt-20110103 > > > > These are both recent 8-STABLE versions of Virtualbox. > > have you measured the tcp/ip performance of the virtual box? last time I > checked > it was not that good, remeber that iscsi is TCP based. > Yes, I have. I should have mentioned the VM I'm testing with is a 9-CURRENT with the virtio patch. However if I understand it correctly, the native vbox initiator isn't in the VM itself, it's at the hypervisor level so it should run at host speed right? -- Adam Vande More _______________________________________________ freebsd-emulation@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-emulation To unsubscribe, send any mail to "freebsd-emulation-unsubscr...@freebsd.org"
