Anyone using Freebsd 6.2 ?

Hi guys,

Is any of you using Diablo in combination with Freebsd 6.2?
Since we migrated our storage servers from 4 to 6 we're
experiencing
strange lockups. That is, after a couple of weeks the load
skyrockets
and renders the machine unusable.
When the diablo process is killed it immediately settles
down. So it
seems that the process somehow lost access to a vital
resource, gets
in a loop trying and chews up all the cpu power.
All the usual tools (netstat, pstat, top etc.) don't show
anything
out of the ordinary (the one time we got to it soon enough
to be able to
run these).
Killing/restarting the process is just a very short term
fix. Usually
the same day the problem returns. Only after a reboot it
works flawlessly
again for a couple of weeks.

So if anybody has experienced this before and wants to share
his/her
info/tips, do tell 

Best regards,

Patrick van Iersel.

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> Hi guys,
> 
> Is any of you using Diablo in combination with Freebsd
6.2?
> Since we migrated our storage servers from 4 to 6 we're
experiencing
> strange lockups. That is, after a couple of weeks the
load skyrockets
> and renders the machine unusable.
> When the diablo process is killed it immediately
settles down. So it
> seems that the process somehow lost access to a vital
resource, gets
> in a loop trying and chews up all the cpu power.
> All the usual tools (netstat, pstat, top etc.) don't
show anything
> out of the ordinary (the one time we got to it soon
enough to be able to
> run these).
> Killing/restarting the process is just a very short
term fix. Usually
> the same day the problem returns. Only after a reboot
it works flawlessly
> again for a couple of weeks.
> 
> So if anybody has experienced this before and wants to
share his/her
> info/tips, do tell 

Well, we've run Diablo a little bit on 6.*/AMD64.  The
problems we were 
noticing were different.  We've currently got a reader box
on 6.*/AMD64
and with a modest amount of work, it is working pretty well,
with some
significant caveats.

Large MTU support seems to be busted.  This is significant
for environments
where you're trying to move around massive quantities of
data with a small
number of TCP streams.

We make extensive use of IPFW.  We've also noticed that the
IP networking 
is fragile as all hell (as in, running "ping" can
panic the box).  We're
not sure that this is related to the IPFW stuff we're doing,
or if it is
related to other network tuning, or if it is just 6.2R.

A variety of other things (I'm missing my notes) will also
panic the box,
usually stuff that would be
rock-solid-incomprehensible-that-it-would-cause-
a-panic-under-4.*.

There are some improvements as well, mostly related to
AMD64.

Quite frankly, though, we've not been inspired to commit to
6.* (or 5.*)
just yet.

What exactly are you doing with the machine (what is its
role)?

... JG
-- 
Joe Greco - sol.net Network Services - Milwaukee, WI - http://www.sol.net
"We call it the 'one bite at the apple' rule. Give me
one chance [and] then I
won't contact you again." - Direct Marketing Ass'n
position on e-mail spam(CNN)
With 24 million small businesses in the US alone, that's way
too many apples.
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On Thu, Jun 07, 2007 at 03:04:29PM +0200, Patrick van Iersel
wrote:
> Is any of you using Diablo in combination with Freebsd
6.2?

About 28 days ago I turned up 4 new binary spoolers running
6.2R.  I have
not had any stability problems.  For that matter the rest of
my Usenet
architecture (about 20 servers) is running 6.1R without a
hitch.

Are you using i386 or amd64?  I'm using all i386 on Intel
servers.  What
version of Diablo are you using?  While I am tempted to
upgrade, I've been
using 5-CUR-20060117-00 flawlessly for about a year.  I
store my dhistory
on an mfs file system for better performance.

On this note, what are people using for feeders?  I'd heard
from a friend
that Linux gets pretty good performance.  I just resist all
things Linux.


Dan

-- 
      Daniel R Mason  =  danmasondanmason.net  =  Unix
Systems Engineer;
"But if the U.S. were to leave and abandon Iraq without
establishing the 
 grounds for a united and sovereign country, that would
definitely be a 
 second mistake." -- Vladimir Putin
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