> [ ... ] I now found out that performance of a 520s SSD is > around 180 times faster than a 530s SSD. [ ... ] Well "performance" can be roughly the same, even if "speed" can be very different. http://www.sabi.co.uk/blog/15-two.html#151023 > 520s: 70MB/s > 530s: 0.4MB/s .... > fio --filename=/dev/sdb --direct=1 --sync=1 --rw=write --bs=4k > --iodepth=1 --runtime=60 --time_based --group_reporting > --name=IntelDC3510_4kj1 --numjobs=1 Arguably the 520s actually have no performance. https://www.sebastien-han.fr/blog/2014/10/10/ceph-how-to-test-if-your-ssd-is-suitable-as-a-journal-device/ -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
