Doubtfully they looks similar in memory now, cause they use a lot std::map and std::strings, and there is almost no possibility to guarantee memory layout. 2016-04-13 12:59 GMT+03:00 Dan van der Ster <dan@xxxxxxxxxxxxxx>: > Hi ceph-devel, > > Did anyone ever consider using madvise MADV_MERGEABLE to enable kernel > samepage merging for the ceph-osd? Typically this is used on kvm hosts > to dedupe the VM memories, but naively I was thinking that since our > osdmaps are duplicated (a few 100MB per daemon) we might profit as > well. Though, perhaps these maps are changing often enough that KSM > wouldn't help... no idea. > > Any thoughts here? > > -- Dan > CERN IT > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- With regards, Sokolov Yura aka funny_falcon -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
