Dual Xeon 2.8 with HT - How is the support in FreeBSD 5.3

M m at obmail.net
Thu Jan 6 16:13:42 PST 2005

On Jan 6, 2005, at 6:14 PM, Robert Watson wrote:

> On Thu, 6 Jan 2005, M wrote:
>> The only issue I've had on any of them is a highly loaded NFS server
>> which has crashed, but
> If you have any further debugging information on the NFS crash, I'd be
> happy to take a look. It could well have been fixed by the recent
> RELENG_5_3 NFS fix, which has been in RELENG_5 for a month or two.


This morning I applied p3 and it's running, we'll see how long it goes. 
I turned the access_cache_timeout on the 10 client systems down to 0. 
I'm pushing about 35 Mbit/sec of traffic both ways at the moment. At 
this point the clients are generating nfs server not responding/nfs 
server is alive again messages every few minutes so if p3 doesn't fix 
the issue I should see something. (I don't think the error isn't coming 
from the disks.  The FC disk array has plenty of spare capacity as 
measured through gstat's %busy, mostly from having 4 GB of memory, most 
of it Inactive).

Unfortunately the crashes produce no output at all, just hard hang. If 
it continues I'm going to turn off SMP and go single processor. I 
understand that may help get some useful output from a system crash.

Do you have any thoughts on hyperthreading on a system that's used only 
as an NFS server?


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