Odd network issues on ZFS based NFS server
freebsd at jdc.parodius.com
Thu Jun 10 11:46:16 UTC 2010
On Thu, Jun 10, 2010 at 01:13:16PM +0200, Anders Nordby wrote:
> On Wed, Jun 09, 2010 at 11:28:52AM -0400, Rick Macklem wrote:
> > When you tried a different NIC, was a different type (ie. different
> > chipset that uses a different device driver)? I suggested that not
> > because I thought the hardware was broken but because I thought it
> > might be related to the network interface's device driver and switching
> > to a different device driver would isolate that possibility.
> Nope. I switched from NIC 1 to 2, and switched server to an identical
> one. They both use bge NICs, a very common interface. I somehow doubt
> this is related to the NIC or driver, I have many machines with the same
> bge NIC (HP NC7782) that does not have any problems like this.
This may not be the problem of course, but are they they *exact* same
model and revision of NIC? pciconf -lvc on both boxes, and looking for
the relevant bgeX interfaces, would determine that.
I believe Rick was recommending you switch to another model of NIC that
doesn't fall under the same driver, e.g. do you see this behaviour when
Also, can you provide uname -a output, or specifically the build date of
the kernel. There have been bge(4) changes happening regularly
throughout the lifetime of RELENG_8, including into the -PRERELEASE
> Mem: 25M Active, 147M Inact, 1021M Wired, 112K Cache, 316M Buf, 1780M Free
> Swap: 6144M Total, 6144M Free
> The server doesn't have many connections, 16 in ESTABLISHED state. As
> you can see from top, the server has 1780 MB free memory.
Clarification: I believe it actually has 1927MB (147M Inact + 1780M
Free) available. I've always understood top's "Free" field to mean
"number/amount of pages which have never been touched/used since the
kernel was started", while "Inact" to mean "number/amount of pages which
have been touched/used but are not actively being used, this available
If someone more familiar with the VM and top could expand on this,
that'd be helpful.
| Jeremy Chadwick jdc at parodius.com |
| Parodius Networking http://www.parodius.com/ |
| UNIX Systems Administrator Mountain View, CA, USA |
| Making life hard for others since 1977. PGP: 4BD6C0CB |
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