On 7/27/15 10:22, Quartz wrote:
What's Intel Atom support like these days? I remember they used to be a little weird. Are they handled pretty much like any other x86 chip now or are some things still unsupported? Are they capable of handling pf on a saturated 100-base-t connection? How about gig-e?
I just posted a dmesg from a SuperMicro motherboard with 8-core Intel Atom C2758. As noted in the email, everything I cared about worked.
I didn't try to saturate the system but was able to run multiple rsync sessions. I started with one rsync session from two 7200 RPM Hitachi NAS drives configured with stacked softraid (mirror + crypto). I'm reasonably certain I was getting 40 - 45 MB/s which prompted me to run a second rsync from another stacked mirror+crypto set to the same target. Adding the second rsync slowed the first a bit. I think I was seeing 38 - 40 MB/s per stream.
Depending on how you configure your disks the 8-core C2758 should be able to saturate a single gig-e nic.
The SuperMicro board I was using has 4 intel nics + a separate IPMI nic. There's also a 4-core version of the board. There's also a C2750 version of the board (4 and 8 core models) which has turbo boost.
ServerTheHome tested the 2758 and 2750 against the Xeon E3 (and others). The Xeon comes out on top as you would expect but for file serving, you may find them acceptable.
<http://www.servethehome.com/intel-atom-c2750-8-core-avoton-rangeley-benchmarks-fast-power/> <http://www.servethehome.com/intel-atom-c2758-benchmarks-8-core-rangeley-tested/> --Aaron
