Date: Mon, 21 Sep 2009 15:09:44 +0100 (BST) From: Gavin Atkinson <gavin.atkinson@ury.york.ac.uk> To: Marius Strobl <marius@alchemy.franken.de> Cc: freebsd-sparc64@freebsd.org Subject: Re: Is it posible to run FreeBSD/sparc64 on SunFire V215? Message-ID: <20090921150632.U4106@ury.york.ac.uk> In-Reply-To: <20090918131416.GQ57060@alchemy.franken.de> References: <3979a4b0909170200x754ea8c5l495e300b2a7a5113@mail.gmail.com> <20090917224556.GA41908@alchemy.franken.de> <3979a4b0909172329q3a113942xfcd71394a98fee19@mail.gmail.com> <20090918131416.GQ57060@alchemy.franken.de>
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On Fri, 18 Sep 2009, Marius Strobl wrote: > On Fri, Sep 18, 2009 at 02:23:49PM +0400, KOT MATPOCKuH wrote: >> PS. Why net boot is too slow? Loading process occupies ~15 minutes >> from start to last message. > > I don't know and it works fine here, you'd need to > analyze the network traffic in order to get an idea > which side is the culprit. IIRC I've seen similar > effects when not using the full speed of the network > interface of a sun4u machine, i.e. for example a > Gigabit Ethernet interface with a Fast Ethernet > switch, given that the loader relies on the firmware > to provide support for the NIC there isn't much that > can be done about that. Last time I looked at this, it looked like the problem was that for every block transferred over the wire (which I think are 4k in size, but I may be misremembering) the loader was calling into OpenFirmware to open the network card, read the block, and close the network card. Each open/close pair took enough time to be noticeable. I never had a chance to sit down and fix this. Gavin
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