I do manage to read the manual, but let me clarify this. I am not
allowed to set a buffer larger than 256KB with iperf:

$ uname -a
OpenBSD odn1-fw-odn1-01 6.0 GENERIC.MP#0 amd64

$ iperf -s -w 256KB
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size:  256 KByte
------------------------------------------------------------

$ iperf -s -w 4MB
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 16.0 KByte (WARNING: requested 4.00 MByte)
------------------------------------------------------------
$

ANDREAS KRÜGER
CTO Hosting and Infrastructure

+45 51808863
a...@patientsky.com



PatientSky AS
Hovfaret 17 B, NO-0275 Oslo, Norway
patientsky.com




2017-09-14 19:46 GMT+02:00 Chris Cappuccio <ch...@nmedia.net>:
> ipsec tunnels don't use TCP
>
> iperf has the -w option
>
> Andreas Kr??ger [a...@patientsky.com] wrote:
>> How would i set i for ipsec tunnels or iperf etc. then?
>> ANDREAS KR??GER
>> CTO Hosting and Infrastructure
>>
>> +45 51808863
>> a...@patientsky.com
>>
>>
>>
>> PatientSky AS
>> Hovfaret 17 B, NO-0275 Oslo, Norway
>> patientsky.com
>>
>>
>>
>>
>> 2017-09-14 13:10 GMT+02:00 Janne Johansson <icepic...@gmail.com>:
>> >
>> > 2017-09-14 13:08 GMT+02:00 Janne Johansson <icepic...@gmail.com>:
>> >>
>> >> Since 6.1 I think the max is 2M, and not 256k. Many programs will also
>> >> allow you to bump limits using setsockopt.
>> >>
>> >>
>> >
>> > httpd.conf:
>> > server "secret.site" {
>> >         tcp {
>> >                 socket buffer 2097152
>> >         }
>> >
>> > rsyncd.conf:
>> >  ...
>> >         socket options = SO_SNDBUF=2097152
>> >
>> >
>> > --
>> > May the most significant bit of your life be positive.

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