seastarer · HackerTrans

2 месяца назадdiscuss

It's more correct to use O_DSYNC in addition to O_DIRECT. This adds FUA to the disk write if the disk requires it for durability.

seastarer

7 месяцев назадdiscuss

It is actually very cheap if done right. Enterprise SSDs have write-through caches, so an O_DIRECT|O_DSYNC write is sufficient, if you set things up so the filesystem doesn't have to also commit its own logs.

seastarer

8 месяцев назадdiscuss

Do these calculations take into account the lengthening of the days due to tidal friction?

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