https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=212681
k...@pielorz.com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |k...@pielorz.com --- Comment #1 from k...@pielorz.com --- Hi, We run XenServer 6.5 and 7 here - with a range of FreeBSD versions (mostly 10.x now). We've not noticed any really low I/O performance. How are you running dc3dd? - So I can try and install / replicate this here. We have seen that I/O behaves differently under XenServer than it does on bare metal (which is obvious - i.e. local SATA SSD vs. Multipath iSCSI [or similar]) you will see differences (even just with 'mapped through XenServer' "Local Storage"). It could be dc3dd / the stuff you're running is a particularly 'bad case' for the I/O. e.g. In an equally 'synthetic' test - a regular "dd if=/dev/zero of=test.dat bs=64k count=10240" on our our test pool here (which has two paths iSCSI over Gigabit) we get around 220Mbyte/sec to a FreeBSD DomU. That may well be a best case - and you may well have hit some worst cases. -Karl -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ freebsd-xen@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to "freebsd-xen-unsubscr...@freebsd.org"