3 ms·
One of the first optimizations at basically every level is to not honor fsync requests. Network file systems lie. Operating systems lie about local volumes. RAI
by da_chicken 7y ago
One of the first optimizations at basically every level is to not honor fsync requests. Network file systems lie. Operating systems lie about local volumes. RAID controllers lie. On-disk controllers lie. That's because these lies are caches, and cache buffers are one of the easiest ways to boost performance.