HiI have FreeBSD 9 / UFS on a net6501 (1GHz), 5.4k WD SATA disc connected using ATACAM layer.
Using 512 byte block size (the default) I get: > sudo dd if=/dev/ada0 of=/dev/null count=163840 163840+0 records in 163840+0 records out 83886080 bytes transferred in 32.927147 secs (2547627 bytes/sec)But that's pretty small for a read these days, given that you're benchmarking sequential read performance.
So running that again with 1MB block size instead: > sudo dd if=/dev/ada0 of=/dev/null bs=1M count=80 80+0 records in 80+0 records out 83886080 bytes transferred in 0.961887 secs (87209922 bytes/sec)I get a similar pattern on some beefier Atom-based servers (Supermicro 5015A-PHF). What are you trying to show with your benchmark?
Thanks Dominic
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