Date: Sun, 18 Nov 2012 15:13:02 +0100 From: Andre Oppermann <andre@freebsd.org> To: Andrey Zonov <zont@FreeBSD.org> Cc: src-committers@freebsd.org, Eitan Adler <eadler@freebsd.org>, Peter Wemm <peter@wemm.org>, Alfred Perlstein <alfred@freebsd.org>, svn-src-all@freebsd.org, Alfred Perlstein <bright@mu.org>, svn-src-head@freebsd.org Subject: Re: svn commit: r242847 - in head/sys: i386/include kern Message-ID: <50A8ECEE.9020908@freebsd.org> In-Reply-To: <50A8EB3E.6060807@FreeBSD.org> References: <201211100208.qAA28e0v004842@svn.freebsd.org> <CAF6rxg=HPmQS1T-LFsZ=DuKEqH30iJFpkz%2BJGhLr4OBL8nohjg@mail.gmail.com> <509DC25E.5030306@mu.org> <509E3162.5020702@FreeBSD.org> <509E7E7C.9000104@mu.org> <CAF6rxgmV8dx-gsQceQKuMQEsJ%2BGkExcKYxEvQ3kY%2B5_nSjvA3w@mail.gmail.com> <509E830D.5080006@mu.org> <509E847E.30509@mu.org> <CAF6rxgnfm4HURYp=O4MY8rB6H1tGiqJ3rdPx0rZ8Swko5mAOZg@mail.gmail.com> <509E8930.50800@mu.org> <CAF6rxgmabVuR0JoFURRUF%2Bed0hmT=LF_n5LXSip0ibU0hk6qWw@mail.gmail.com> <CAGE5yCouCWr4NKbgnjKfLcjc8EWqG0wRiSmXDDnrnM3%2BUc8KVQ@mail.gmail.com> <CAF6rxg=ryNEMEidJdgf8-Ab=bD15R1ypcz-bS8183U4JK_Q17g@mail.gmail.com> <CAGE5yCoeTXf7x4ZBDXnHJ4dnFi-_2R28kB8HxOB%2B=Je4aJGYQQ@mail.gmail.com> <509EA869.6030407@freebsd.org> <509ED439.8090607@mu.org> <509EDD93.3020001@freebsd.org> <50A8EB3E.6060807@FreeBSD.org>
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On 18.11.2012 15:05, Andrey Zonov wrote: > On 11/11/12 3:04 AM, Andre Oppermann wrote: >> On 10.11.2012 23:24, Alfred Perlstein wrote: >>> On 11/10/12 11:18 AM, Andre Oppermann wrote: >>>> On 10.11.2012 19:04, Peter Wemm wrote: >>>>> This is complicated but we need a simple user visible view of it. It >>>>> really needs to be something like "nmbclusters defaults to 6% of >>>>> physical ram, with machine dependent limits". The MD limits are bad >>>>> enough, and using bogo-units like "maxusers" just makes it worse. >>>> >>>> Yes, that would be optimal. >>>> >>> No it would not. >>> >>> I used to be able to tell people "hey just try increasing maxusers" >>> and they would and suddenly the >>> box would be OK. >>> >>> Now I'll have to remember 3,4,5,10,20x tunable to increase? >> >> No. The whole mbuf and cluster stuff isn't allocated or reserved >> at boot time. We simply need a limit to prevent it from exhausting >> all available kvm / physical memory whichever is less. >> > > For now, we have limit which does not allow to run even one igb(4) NIC > in 9k jumbo configuration. My patch for mbuf* zone auto-sizing does fix that, or not? -- Andre
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