[Samba] Win7 can and cannot join domain; speed issues? (tests to /dev/zero & /dev/null?)
samba at tlinx.org
Fri Jan 15 15:55:45 MST 2010
I've made some pseudo progress .. I deleted my DNS domain name from my
client -- after that, I was able to get a message (Welcome to Bliss Domain) -- followed by 'Domain join failed, you will not be in the Domain. Reboot now to activate your new domain name.
Upon reboot, it thinks I am in Bliss domain, BUT it acts completely
unjoined -- no domain groups in group list selections, Shares won't
work -- says I need permission from 'Domain\me', or the
funniest (if I it wasn't also sad), was when I connected to the share
as ClientWorkstation\me, it then told me I couldn't alter
files w/o permission from Athena\me. Um...I am me?...and I'm on my
workstation, but it thinks I need permission from me? What's up with
Anyways, back to workgroup Bliss, and file sharing is normal again.
Also have an ongoing oddity -- read/write speed to a network share.
I can't figure out why it's so slow. Writes are faster than reads.
My tests are a bit weird. To test out write, I write to /dev/null
on the target sys, and to test read, I'm reading from /dev/zero.
Locally, these copies return instantaneously. But over the network
I get about 34MB/s read, and 39MB/s write. But oddly smbd is
nearly 100% cpu bound. I was using 'dd' with a 1GB block size.
So shouldn't 'smbd' usually have been asleep awaiting I/O completion
(which is near instantaneous). I'd expect to be getting more along
the lines of 60-70MB/s R+W (Gigabit network with large packet (9014) enabled. It's a bit faster than standard packets by about 10%. But
that's not real exciting...
Shouldn't tests to a remote /dev/zero and /dev/null be valid for
testing a no-filesystem load raw transfer rate?
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