>>Do you really want 'never'? I thought 'madvise' would be better, because we >>can >>enable it >>for some application (KVM)?
AFAIK, even jemalloc for example are not perfect with madvise , they are still latency impact. They are a lot of bug report with transparent hudgepage with software like redis,varnish,mongodb,mysql,hadoop,oracle, event with madvise. So I think it's better to setup to safe default value, "never". User can still enable it after with "echo madvise|always > /sys/kernel/mm/transparent_hugepage/enabled" ----- Mail original ----- De: "dietmar" <diet...@proxmox.com> À: "aderumier" <aderum...@odiso.com> Cc: "pve-devel" <pve-devel@pve.proxmox.com> Envoyé: Mercredi 9 Septembre 2015 16:34:32 Objet: Re: [pve-devel] disabling transparent hugepage by default like kernel 2.6.32 ? > >>I could set it in kernel config, for example: > >> > >>CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y > >> > >>would that help? > > Well, this is like "echo madvise > > /sys/kernel/mm/transparent_hugepage/enabled" > > But I don't see how to set never. Do you really want 'never'? I thought 'madvise' would be better, because we can enable it for some application (KVM)? _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
