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Date: Tue, 29 May 2018 13:58:53 +0300
From: Vitalij Satanivskij <satan@ukr.net>
To: "Andrey V. Elsukov" <bu7cher@yandex.ru>
Cc: Vitalij Satanivskij <satan@ukr.net>, freebsd-net@freebsd.org
Subject: Re: GRE/gif/netgraph tunnel speed on 10Gbit channel
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Thank you Andrey.

I'm test with value of 62 without any success ^( 



Andrey V. Elsukov wrote:
AVE> On 29.05.2018 13:05, Vitalij Satanivskij wrote:
AVE> > 
AVE> > Hello.
AVE> > 
AVE> > Looks like it's inposible to set as sysctl are readonly and through loader.conf it's also not setable.
AVE> > 
AVE> > AVE> You can try to increase kern.ipc.max_linkhdr up to 60-80 bytes.
AVE> > AVE> I think this can increase throughput a bit, since this can reduce the
AVE> > AVE> need to allocate extra mbuf when new IP header is encapsulated.
AVE> 
AVE> Hm, yes it is readonly. Probably I thought about my local patches...
AVE> You can try this kernel module to change this value in run time.
AVE> 
AVE> -- 
AVE> WBR, Andrey V. Elsukov

AVE> # $FreeBSD$
AVE> 
AVE> KMOD=	linkhdr
AVE> SRCS=	main.c
AVE> MK_MAN=	no
AVE> 
AVE> .include <bsd.kmod.mk>