ysee...@gmail.com wrote on 11/13/2009 09:06:29 AM: > On Fri, Nov 13, 2009 at 6:27 AM, Michael McCandless > <luc...@mikemccandless.com> wrote: > > I think we sorely need a Directory impl that down-prioritizes IO > > performed by merging. > > It's unclear if this case is caused by IO contention, or the OS cache > of the hot parts of the index being lost by that extra IO activity. > Of course the latter would lead to the former, but without that OS > disk cache, the searches may be too slow even w/o the extra IO.
On linux there's the ionice command to try to throttle processes. Would it be possible and make sense to have a separate process for optimizing that had ionice set it to idle? Can the index be shared this way? Thanks, Jerry
