On Thu, Nov 28, 2013 at 11:30:46AM +1100, Toby Corkindale wrote:
I really like the little ARM single-board computers. I
just wish the
distros would manage to sort the hardware support out properly, and
then continue to support previous versions for just a bit longer.
does debian on ARM have long term support?
I suspect when the 64bit ARM chips come out then RedHat/CentOS will
support them and we'll get long term support. I doubt they will bother
until we're out of the 32bit ARM era - 2G of ram for 4 or 8 cores to
share (even if they are slow) is very limiting.
IIRC debian has had an aarm64 port since the start of this year.
Ubuntu seems to have gone the other way - chasing the phone and tablet
markets (which outside the big two is increasingly cluttered - firefox
OS, tizen, jolla/sailfish, aosp respins, 'doze, ubuntu touch, ??), but
I guess that doesn't preclude them doing a LTS ARM server spin too.
It's your typical case that a new version comes
out, and then all the
dev focus moves to it and the older version is stuck in time. Usually
not too hard to bring it up to date if you know what you're doing, but
it's a barrier to adoption for people who just want to have a small,
stable platform, rather than spend all their time maintaining the
or if you "install once and forget" then it limits their usefulness to
being intranet only. can't have world-facing un-updated boxen...
Most of the boards sit a fair bit behind the current
ARM tech, sadly.
Eg. The common boards are a single or dual core 1GHz ARM A8 or A7.
(And the raspberry pi is far behind that in terms of processing power)
Meanwhile the ARM cpu in the Nexus 5 phone can get up to 2.3 GHz on
four cores! I'd love to have that sitting in a cheap, low-powered
server the size of a deck of cards.. (You can get Snapdragon dev kits,
but they're expensive and aimed at developing for new devices, not
just running as mini computers)
generally agree, but cpu specs aren't everything. cache and main memory
bandwidth, being able to run 2xSATA and 1gige NIC at full speed
(handling interrupts & DMA efficiently), some PCIe, etc. are probably
way more important to servers than a bit more cpu GHz.
AFAICT ARM hardware/kernels still have some way to go to catch up in
also if the SMP architecture is poor then sometimes adding more cores
to a chip results in more contention and each core goes noticeably
slower. I'm not clear what the state of SMP scalability is like on the
myriad of ARM chip designs.