freebsd stable - Sep 2016 - 11.0 stuck on high network load

On Sun, Sep 18, 2016 at 07:50:08PM +0200, Hans Petter Selasky wrote:
> Hi,
> 
> Got some tips regarding this thread.
> 
> Some things you can try:
> 
> 1) Compile kernel from projects/hps_head instead of your 11-stable?
How many difference from 11-stable?
> 2) Set net.inet.tcp.per_cpu_timers=1
Already. From 10.x, by manual MFC.
> If the system just hangs, it is pretty likely that the timers are going 
> in a loop due to typical use after free.
> 
> Please keep me CC'ed, hence I'm not subscribed to @stable.
> 
> --HPS

On 09/18/16 20:10, Slawa Olhovchenkov wrote:
> On Sun, Sep 18, 2016 at 07:50:08PM +0200, Hans Petter Selasky wrote:
>
>> Hi,
>>
>> Got some tips regarding this thread.
>>
>> Some things you can try:
>>
>> 1) Compile kernel from projects/hps_head instead of your 11-stable?
>
> How many difference from 11-stable?
Hi,

The callout subsystem has a different implementation. Else identical.
>
>> 2) Set net.inet.tcp.per_cpu_timers=1
>
> Already. From 10.x, by manual MFC.
OK.
>
>> If the system just hangs, it is pretty likely that the timers are going
>> in a loop due to typical use after free.
>>
>> Please keep me CC'ed, hence I'm not subscribed to @stable.
>>
--HPS