Date: Thu, 10 May 2012 11:52:32 -0400 From: Charles Owens <cowens@greatbaysoftware.com> To: alc@freebsd.org Cc: Adam Vande More <amvandemore@gmail.com>, Alan Cox <alan.l.cox@gmail.com>, freebsd-stable@freebsd.org Subject: Re: superpages not solving "PV entries" limit warning Message-ID: <4FABE440.5000100@greatbaysoftware.com> In-Reply-To: <CAJUyCcO7MoT0ux9aRxNtkMo2eij=NZ%2BiQ0jsh9j2hoH6wabPhw@mail.gmail.com> References: <4FAAAF8E.40007@greatbaysoftware.com> <CA%2BtpaK2nOieH%2BLFwqDXRX-DRVXvhL3%2BcXfWPoskY6-xW5Qj-_g@mail.gmail.com> <CAJUyCcO7MoT0ux9aRxNtkMo2eij=NZ%2BiQ0jsh9j2hoH6wabPhw@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
That's very helpful! I had read about that and wondered if it applied to i386. Should I have expected "superpages" to completely cure the condition... or does it just help? Should I now be looking at tuning the related pmap sysctls to give further relief? Thanks! Charles On 5/10/12 11:24 AM, Alan Cox wrote: > On Thu, May 10, 2012 at 2:32 AM, Adam Vande More > <amvandemore@gmail.com <mailto:amvandemore@gmail.com>> wrote: > > On Wed, May 9, 2012 at 12:55 PM, Charles Owens > <cowens@greatbaysoftware.com > <mailto:cowens@greatbaysoftware.com>>wrote: > > > Hi fellow BSD-types, > > > > I have a buy system that forks lots of processes and I see > repeatedly the > > message: "Approaching the limit on PV entries, consider > increasing either > > the vm.pmap.shpgperproc or the vm.pmap.pv_entry_max tunable". > > > > System details: > > > > * 8.1-RELEASE-p2 i386 PAE kernel > > * 6 GB RAM > > > > The warning is not applicable any longer including your version as > well as > several previous ones. The warning has been removed from current > releases. > > > For amd64, yes, but not i386. It can't be removed from i386. > > Alan > > >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4FABE440.5000100>