Failed to allocate receive buffer problem

[John Baldwin]

On Wednesday, June 12, 2013 3:06:26 am Alex Liptsin wrote:
> Hi.
> 
> I have a problem that when running a ping (or any other traffic) over IPoIB 
port,
> Traffic fails after some time.
> At destination server DMESG I see that errors:
> 
> Jun 11 14:42:11 h-qa-033 kernel: ib1: failed to allocate receive buffer 253
> Jun 11 14:42:12 h-qa-033 kernel: ib1: failed to allocate receive buffer 254
> Jun 11 14:42:13 h-qa-033 kernel: ib1: failed to allocate receive buffer 255
> Jun 11 14:42:14 h-qa-033 kernel: ib1: failed to allocate receive buffer 0
> Jun 11 14:42:15 h-qa-033 kernel: ib1: failed to allocate receive buffer 1
> Jun 11 14:42:16 h-qa-033 kernel: ib1: failed to allocate receive buffer 2
> Jun 11 14:42:17 h-qa-033 kernel: ib1: failed to allocate receive buffer 3
> Jun 11 14:42:18 h-qa-033 kernel: ib1: failed to allocate receive buffer 4
> Jun 11 14:42:19 h-qa-033 kernel: ib1: failed to allocate receive buffer 5
> Jun 11 14:42:20 h-qa-033 kernel: ib1: failed to allocate receive buffer 6
> Jun 11 14:42:21 h-qa-033 kernel: ib1: failed to allocate receive buffer 7
> 
> I work with FreeBSD 9.1.
> 
> Is it a bug or some configuration issues?

Do you see memory allocation errors in netstat -m?

Specifically this line:

0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters)

If so, it may be that the IPoIB layer has an mbuf leak.  The rest of netstat -
m might be useful here as you can see if any of the zones are full.

-- 
John Baldwin