2013 year Amsterdam1:
dd if=/dev/zero of=tempfile count=512 bs=1024k conv=fdatasync 512+0 records in 512+0 records out 536870912 bytes (537 MB) copied, 1.68047 s, 319 MB/s
2015 year Amsterdam2:
dd if=/dev/zero of=tempfile count=512 bs=1024k conv=fdatasync 512+0 records in 512+0 records out 536870912 bytes (537 MB) copied, 18.5109 s, 29.0 MB/s
Why there is such a different in speed? Could you show your results, please?
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