On 05/11/11 11:19, Alain Spineux wrote: > Hello I have a file, that is an index, it is open all the time by the > application, > but sometime the access are slow because the file was moved out of the cache. > > How can I keep it in memory all the time ? > I can read it at regular interval, but this is a little over kill ? > > Any idea > > thanks. > > There is a kernel facility that nails pages to memory so that they are not paged out (such as for DMA purposes). But I do not know if such a facility is accessible directly from any userland calls via libc. BSD used to have a vadvise() call to accomplish such a feat.
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