----- Original Message ----- From: "Poul-Henning Kamp" <[EMAIL PROTECTED]>To eliminate various parts of the subsystems I've just tested: dd if=/dev/da0 of=/dev/null bs=64k count=100000 Read: 220Mb/s
This is a very interesting number to measure, you'll never see anything else going faster than that. Presumably this is -current ?
Nope thats 5.4-STABLE this should be at the very least 260Mb/s as thats what the controller has been measured on linux at even through the FS.
Um... not quite. That was the number you listed for S/W RAID5. In that case you're not benchmarking the controller in the same way; the controller is just serving requests with no RAID processing overhead at all. Could you get results for Linux that bypassed the filesystem but used H/W RAID5 like you are with FreeBSD?
Compared with: dd if=/usr/testfile of=/dev/null bs=64k count=100000 Read: 152Mb/s
-- Jonathan Noack | [EMAIL PROTECTED] | OpenPGP: 0x991D8195
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