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Subject: Re: 11.0 stuck on high network load
To: Slawa Olhovchenkov <slw@zxy.spb.ru>
References: <2490d030-e947-4842-8e91-6498864b0100@selasky.org>
 <20160918181016.GK2840@zxy.spb.ru>
Cc: freebsd-stable@freebsd.org
From: Hans Petter Selasky <hps@selasky.org>
Message-ID: <e11324e6-9b6e-790b-9875-7ff7fbe195c6@selasky.org>
Date: Sun, 18 Sep 2016 22:38:58 +0200
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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