Date: Fri, 11 Sep 2015 13:46:14 -0700 From: Alfred Perlstein <bright@mu.org> To: Adrian Chadd <adrian@freebsd.org>, Warner Losh <imp@bsdimp.com> Cc: Ed Maste <emaste@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org> Subject: Re: svn commit: r287606 - head/sys/kern Message-ID: <55F33D96.8060300@mu.org> In-Reply-To: <CAJ-VmonUm5Sf8TPLnciouyiJjLUndtNJX368US5_hgQwzYBdkQ@mail.gmail.com> References: <201509100405.t8A45xrJ070199@repo.freebsd.org> <CAPyFy2DjD3Dv6VYjd_6CKe3_2ZuMC5ayMKnzATLb=a4yZUYyLw@mail.gmail.com> <CANCZdfoBN9keiZCUpJ_v5y6mUpKcY_26Y_2=xCLwJovz%2B8a_xQ@mail.gmail.com> <CAJ-VmonUm5Sf8TPLnciouyiJjLUndtNJX368US5_hgQwzYBdkQ@mail.gmail.com>
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64k hard is too low a number for large memory machines. -Alfred On 9/10/15 9:18 AM, Adrian Chadd wrote: > On 10 September 2015 at 09:04, Warner Losh <imp@bsdimp.com> wrote: >> >> On Thu, Sep 10, 2015 at 9:53 AM, Ed Maste <emaste@freebsd.org> wrote: >>> On 10 September 2015 at 04:05, Adrian Chadd <adrian@freebsd.org> wrote: >>>> Author: adrian >>>> Date: Thu Sep 10 04:05:58 2015 >>>> New Revision: 287606 >>>> URL: https://svnweb.freebsd.org/changeset/base/287606 >>>> >>>> Log: >>>> Also make kern.maxfilesperproc a boot time tunable. >>>> ... >>>> TODO: >>> Also "we" should >>> * Submit patches upstream or to the ports tree to use closefrom >> >> I thought the consensus was that we'd fix things to have fewer FDs >> by default, but instead allow individual processes to raise it via the >> usual methods. > I'm looking at how to do this in a somewhat sensible fashion. Right > now we just have openfiles=unlimited; in /etc/login.conf which seems a > little odd. I don't know yet if that affects the default set that > services started via /etc/rc get - init gets the whole default > maxfilesperproc and stuff seems to inherit from that unless told > otherwise. > > I think the more sensible default would be: > > * set /etc/login.conf to some much lower values - say, 4k soft, 64k hard; > * root can always override its settings up to kern.maxfilesperproc; > * modify /etc/rc to set some default rlimits as appropriate; > * introduce configuration options ({daemon_rlimit_XXX}?) in > /etc/rc.conf that lets someone override what the default rlimits > should be for a given process,, as (and I'm not making this up) if you > run 'service XXX restart' from a root login you get the rlimits from > the shell, which may differ from the system startup. > > That way we can setup various services to have higher openfile limits > via /etc/rc.conf entries for those services rather than having to hack > each startup script. It also means that no matter what is running > 'service XXX YYY' as root, you'll get the 'correct'(er) rlimits. > > Thoughts? > > > -adrian >
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