FreeBSD and Linux SSD Write Speeds
tundra at tundraware.com
Wed Jun 21 16:04:40 UTC 2017
Disclaimer: Tests below run on lightly loaded systems, but results are ... surprising:
Test Case: dd if=/dev/zero of=foo bs=8M count=512
Linux 4.4.0-21-generic on a 2.66GHz Core2 Duo w/8GB memory, older OCZ SSD/ext4: 310MB/sec writes
FreeBSD 10-STABLE on an 3.2 GHz Quad Core i5 w/8GB memory, newer Kingston SSD/ufs: 210MB/sec writes
Results are repeatable.
So, what is the likely culprit making FreeBSD 1/3 slower? The FreeBSD system does does / nfs exported (which I don't quite yet understand since all the nfs mount points are below it) at the moment, but there is little or no nfs traffic.
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