Is it posible to run FreeBSD/sparc64 on SunFire V215?
gavin.atkinson at ury.york.ac.uk
Mon Sep 21 14:43:08 UTC 2009
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.
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