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Re: BerkeleyDB performance on Linux

Howard Chu wrote:

But again, using O_DIRECT means every I/O is synchronous, so I guess that might wreak havoc on any queuing optimizations in the fs.

And readahead, if it's working for the application.

In my tests I ran a battery of workloads, not just operations that
benefitted from a warm, large cache. Some speeded up, but others
got much worse.