Armin Rigo wrote: > Hi Kirill, > > On 19 May 2014 17:17, Kirill A. Shutemov > <kirill.shute...@linux.intel.com> wrote: > > IIUC PyPy uses the syscall in some early prototype and looks like guys are > > okay to rework it to mmap() if default sysctl_max_map_count will be high > > enough. > > Yes, we can switch easily if needed. The syscall is not in any > "production" version yet. > > Please note that "high enough" in this context means higher than > 2**20. We need it high enough to handle regularly 10-20% of all the > RAM used by each program. If I count correctly, at 20%, 2**20 fails > above 20GB. In general I would suggest to use a default limit that > depends on the amount of RAM (+swap) available.
Is it nessesary to remap in 4k chunks for you? What about 64k chunks? Or something bigger? This way you can scale down required number of VMAs to something more reasonable. -- Kirill A. Shutemov -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
