https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=212681
--- Comment #7 from rai...@ultra-secure.de --- The hardware is HP DL380 Gen 8 servers with 600 or 900 GB SAS disks, running off a HW RAID controller. On local storage, the realworld-test is even slower. I can't run the dc3dd test here and it's apparently a bit more complicated now to create VMs from a template on local storage now that we have completely eliminated it from our offerings. (server </srv>) 0 # time dd if=/dev/zero of=test.dat bs=64k count=20480 20480+0 records in 20480+0 records out 1342177280 bytes transferred in 22.239869 secs (60350053 bytes/sec) dd if=/dev/zero of=test.dat bs=64k count=20480 0.04s user 6.20s system 28% cpu 22.255 total (server </srv>) 0 # time dd if=/dev/zero of=test.dat bs=64k count=20480 20480+0 records in 20480+0 records out 1342177280 bytes transferred in 38.072567 secs (35253133 bytes/sec) dd if=/dev/zero of=test.dat bs=64k count=20480 0.05s user 24.30s system 63% cpu 38.374 total (server </srv>) 0 # time dd if=/dev/zero of=test.dat bs=64k count=20480 20480+0 records in 20480+0 records out 1342177280 bytes transferred in 5.782933 secs (232092820 bytes/sec) dd if=/dev/zero of=test.dat bs=64k count=20480 0.05s user 2.27s system 38% cpu 6.021 total (server </srv>) 0 # (server </srv>) 0 # (server </srv>) 0 # (server </srv>) 0 # time dd if=/dev/zero of=test.dat bs=64k count=20480 20480+0 records in 20480+0 records out 1342177280 bytes transferred in 7.891797 secs (170072452 bytes/sec) dd if=/dev/zero of=test.dat bs=64k count=20480 0.00s user 2.26s system 27% cpu 8.141 total (server </srv>) 0 # (server </srv>) 0 # time dd if=/dev/zero of=test.dat bs=64k count=20480 20480+0 records in 20480+0 records out 1342177280 bytes transferred in 12.598706 secs (106532947 bytes/sec) dd if=/dev/zero of=test.dat bs=64k count=20480 0.02s user 2.37s system 18% cpu 12.845 total (server </srv>) 0 # (server </srv>) 0 # time dd if=/dev/zero of=test.dat bs=64k count=20480 20480+0 records in 20480+0 records out 1342177280 bytes transferred in 7.917661 secs (169516892 bytes/sec) dd if=/dev/zero of=test.dat bs=64k count=20480 0.03s user 2.23s system 27% cpu 8.144 total (server </srv>) 0 # time dd if=/dev/zero of=test.dat bs=64k count=204800 204800+0 records in 204800+0 records out 13421772800 bytes transferred in 147.423047 secs (91042568 bytes/sec) dd if=/dev/zero of=test.dat bs=64k count=204800 0.18s user 22.60s system 15% cpu 2:27.69 total dc3dd is just a tool to securely wipe a disk. I found, because it takes the filesystem out of the equation, that it's a nice benchmarking tool. Also, the results of dc3dd correlate directly with the results of the testcase (in PHP) that the customer has built. -- 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"
