SCP issue on FreeBSD

[Venkateswara Rao Dokku]

I dont think that is causing the problem.
I have the send/receive buffers equal on my system.


On Wed, Feb 10, 2016 at 12:41 AM, Juraj Bocinec <juraj.bocinec at lain.sk>
wrote:

> Greetings, i'm no expert but doesn't this have to do something with
> network send/receive buffers? They're not set the same by default:
>
> [root at schizo /etc]# sysctl -a|grep send
> kern.cam.ada.ada_send_ordered: 1
> kern.cam.da.da_send_ordered: 1
> net.local.stream.sendspace: 8192
> net.inet.ip.sendsourcequench: 0
> net.inet.igmp.sendlocal: 1
> net.inet.igmp.sendra: 1
> net.inet.tcp.sendspace: 32768
> net.inet.tcp.sendbuf_max: 262144
> net.inet.tcp.sendbuf_inc: 8192
> net.inet.tcp.sendbuf_auto: 1
> net.inet.sctp.sendspace: 233016
> net.raw.sendspace: 8192
> [root at schizo /etc]# sysctl -a|grep recv
> net.local.stream.recvspace: 8192
> net.local.dgram.recvspace: 4096
> net.inet.igmp.recvifkludge: 1
> net.inet.tcp.recvspace: 65536
> net.inet.tcp.recvbuf_max: 262144
> net.inet.tcp.recvbuf_inc: 16384
> net.inet.tcp.recvbuf_auto: 1
> net.inet.udp.recvspace: 42080
> net.inet.sctp.recvspace: 233016
> net.inet.raw.recvspace: 9216
> net.raw.recvspace: 8192
>
> Juraj Bocinec
>
> On 2016-02-09 05:39, Venkateswara Rao Dokku wrote:
>
>> Hi,
>>
>> I am using FreeBSD 8.4 as guest on top of the linux (ubuntu 14.10) host. I
>> observed that, the Pushing a file from FreeBSD is giving good performance
>> over Puling a file from other linux box to FreeBSD.
>>
>> root at test:~ # *scp ns-10.5-57.7.gz root at 10.102.38.202:/root*
>> root at 10.102.38.202's password:
>> ns-10.5-57.7.gz                                                      100%
>>  126MB  *63.0MB/s*   00:02
>> root at test:~ #* scp root at 10.102.38.202:/root/ns-10.5-57.7.gz* .
>> root at 10.102.38.202's password:
>> ns-10.5-57.7.gz                                                      100%
>>  126MB  *11.5MB/s*   00:11
>>
>> Why there is a difference between these two?. Any tuning needs to be done
>> on the FreeBSD guest to get these two almost same?
>>
>> To see, whether its specific to FreeBSD I did the same experiment with
>> Linux(Ubuntu 14.10) as guest on top of Linux(same host as above). Here the
>> output is almost same.
>>
>> root at ubuntu:~# *scp root at 10.102.38.202:/root/ns-11.1-14.4.gz .*
>> root at 10.102.38.202's password:
>> ns-11.1-14.4.gz
>> 100%
>>  130MB  *64.8MB/s*   00:02
>> root at ubuntu:~# *scp ns-11.1-14.4.gz root at 10.102.38.202:/roo*t
>> root at 10.102.38.202's password:
>> ns-11.1-14.4.gz
>> 100%  130MB  *64.8MB/s*   00:02
>>
>>
>> Moreover, in most cases Linux performance is better than FreeBSD. Is
>> Ubuntu
>> gives good performance when compared to FreeBSD?
>>
>> Any help is much appreciated.
>> Thanks.
>>
>
>


-- 
Thanks & Regards,
Venkateswara Rao Dokku.