Date: Sat, 22 Dec 2012 22:32:07 -0800 From: Adrian Chadd <adrian@freebsd.org> To: Sergey Kandaurov <pluknet@gmail.com>, ken@freebsd.org Cc: Marten Vijn <info@martenvijn.nl>, freebsd-stable@freebsd.org, jakub_lach@mailplus.pl Subject: Re: 9.1 minimal ram requirements Message-ID: <CAJ-VmomPY3_rG4sR0rMtsAO21krJMa8qt_WSOfhnOGaVQXCa3Q@mail.gmail.com> In-Reply-To: <CAE-mSOLQrWfEb8Wr4Hd1yU10DsJW_koB-PCA=RO5h1xvP_CT6Q@mail.gmail.com> References: <1356218834151-5771583.post@n5.nabble.com> <50D644E5.9070801@martenvijn.nl> <CAE-mSOLQrWfEb8Wr4Hd1yU10DsJW_koB-PCA=RO5h1xvP_CT6Q@mail.gmail.com>
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Ken, Does CAM CTL really need to pre-allocate 35MB of RAM at startup? Adrian On 22 December 2012 16:45, Sergey Kandaurov <pluknet@gmail.com> wrote: > On 23 December 2012 03:40, Marten Vijn <info@martenvijn.nl> wrote: >> On 12/23/2012 12:27 AM, Jakub Lach wrote: >>> >>> Guys, I've heard about some absurd RAM requirements >>> for 9.1, has anybody tested it? >>> >>> e.g. >>> >>> http://forums.freebsd.org/showthread.php?t=36314 >> >> >> jup, I can comfirm this with nanobsd (cross) compiled >> for my soekris net4501 which has 64 MB mem: >> >> from dmesg: real memory = 67108864 (64 MB) >> >> while the same config compiled against a 9.0 tree still works... >> > > This (i.e. the "kmem_map too small" message seen with kernel memory > shortage) could be due to CAM CTL ('device ctl' added in 9.1), which is > quite a big kernel memory consumer. > Try to disable CTL in loader with kern.cam.ctl.disable=1 to finish boot. > A longer term workaround could be to postpone those memory allocations > until the first call to CTL. > > # cam ctl init allocates roughly 35 MB of kernel memory at once > # three memory pools, somewhat under M_DEVBUF, and memory disk > # devbuf takes 1022K with kern.cam.ctl.disable=1 > > Type InUse MemUse HighUse Requests Size(s) > devbuf 213 20366K - 265 16,32,64,128,256,512,1024,2048,4096 > ctlmem 5062 10113K - 5062 64,2048 > ctlblk 200 800K - 200 4096 > ramdisk 1 4096K - 1 > ctlpool 532 138K - 532 16,512 > > -- > wbr, > pluknet > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"
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