Kernel modules

Jason Bacon bacon4000 at
Mon Aug 26 13:39:56 UTC 2019

On 2019-08-26 08:13, Hans Petter Selasky wrote:
> On 2019-04-18 14:52, Jason Bacon wrote:
>> My NFS over IB has been generally working well, but it's going down 
>> under very heavy load.  It's getting consistently triggered by 256 
>> I/O-intensive processes across about a dozen compute nodes.
>> The server remains up and responsive, but ib0 is running out of 
>> buffer space and going down.
> Hi Jason,
> Mellanox found a bug in ipoib which can lead to similar sympthoms that 
> you see. Can you try the attached patch?
> Thank you!
> --HPS
That's great to hear...

Unfortunately, I no longer have admin access to a large cluster with 
Mellanox HCAs, as I just changed jobs.

I did my best to thoroughly test FreeBSD IB before I left my old 
position.  This was the only outstanding issue with the FreeBSD file 
server I was testing, so if this fix resolves it, I would say that 
FreeBSD is production-ready for IB clusters.

Earth is a beta site.

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