5 ms·

Plus he isn’t using oflag=direct, so since output file is small it isn’t even making it to disk. I think it would only be sent to page cache. I’m afraid he is

Plus he isn’t using oflag=direct, so since output file is small it isn’t even making it to disk. I think it would only be sent to page cache. I’m afraid he is testing CPU and memory (bus) speeds here. oflag=direct will write direct and bypass page cache.

fweimer 2y ago
Exactly. Something is very fishy if this system only writes 1.6 GB/s to the page cache. Probably that dd command line quoted in the article is incomplete.
otterley 2y ago
*she