> Yes, I was a trifle optimistic with my estimates.... > > On an operating system with a sensible I/O scheduler (I cannot say > whether or not windows qualifies) it should normally take about > two complete rotations of the disk platter to complete a write. > Obviously a large change would take more than that, but the > common case will usually work in two rotations. > ok. fact is, we have to live with windows. so, let me raise a matter that I mentioned some messages back. I have a feature request, which should be trivial for you to implement, but will take hours for me, since I can barely read C, and not write it, except for trivial cases. case is as follows:
could the "pragma synchronous" statement do a full disk flush when it executes, in addition to changing the operating mode? rationale: assume that I can live with the database being in a high-risk state, for a small window of time. I would like to be able to do this: pragma synchronous=off .... ... inserts,updates,deletes pragma synchronous=full this I *can* do, now, but I dont think that this sequence will flush the in-memory caches when it ends. so, if the pragma did this automatically, the above sequence would make sense. Is this something you could/would add ? alternatively, a PRAGMA FLUSH statement would be fine,too.
