FreeBSD 10.1-REL - network unaccessible after high traffic

[Adrian Chadd]

On 12 June 2015 at 10:57, Christopher Forgeron <csforgeron at gmail.com> wrote:
> I agree it shouldn't run out of memory. Here's what mine does under network
> load, or rsync load:
>
> 2 0 9   1822M  1834M     0   0   0   0    14   8   0   0 22750  724 136119
> 0 23 77
>
> 0 0 9   1822M  1823M     0   0   0   0     0   8   0   0 44317  347 138151
> 0 16 84
>
> 0 0 9   1822M  1761M     0   0   0   0    17   8   0   0 23818  820 92198  0
> 12 88
>
> 0 0 9   1822M  1727M     0   0   0   0    14   8   0   0 40768  634 126688
> 0 17 83
>
> 0 0 9   1822M  8192B     0   8   0   0    15   3   3   0 9236  305 57149  0
> 33 67
>
>
> That's with a 5 second vmstat output. After the 8KiB, the system is nearly
> completely brain-dead and needs a hard power-off.
>
>
> I've seen it go from 6 GiB free to 8KiB in 5 sec as well. Currently my large
> machines are set to 12 GiB free to keep them from crashing, from what I
> presume is just network load due to lots of iSCSI / NFS traffic on my 10GiB
> network.
>
>
> I haven't had time to type this up for the list yet, but I'm putting it here
> just to make sure people know it's real.
>

Hi,

Then something is leaking or  holding onto memory when it shouldn't be.

Try doing vmstat -z and vmstat -m in a one second loop, post the data
just before it falls over.


-adrian