On Fri, 2003-05-16 at 11:43, Christopher Chan wrote: > can you tell us what changes you made to the elevator? > the biggest change is a patch from Andrew Morton that will give priority to reads in the presence of heavy write loads; since reads in general are things the user waits on while writes are generally asynchronous, this is a very interesting optimisation In addition some constants used in the elevator about how agressive it can reorder have been tuned towards more interactive performance (at the cost of raw throughput/performance)
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