On Tue, Sep 15, 2009 at 11:30:37AM -0700, Chris Anderson wrote: > The basic tradeoff here is between safety and speed. With a simple > benchmark on my Mac laptop (OSX 10.5) delayed_commits gives ~230 > writes/second while we only get about 5/sec with the slow safe option. > > I think 5 writes/second is too slow to be useful, so it doesn't matter > how safe it is.
And aside from that: why is it only 5 writes per second? I understand write -> sync -> write metadata -> sync, but any half-decent drive should still be able to do 100+ random writes per second. Would OSX be putting a sleep() in there somewhere??
