Bandwidth optimisation

Hi, I am using Linux at home, ADSL ~16 Mbps/~1 Mbps Internet connection
and my ping time to my ISP is 160-170 msec.

When downloading something with Firefox, I am getting download speeds of
about 100-180 KB/sec (for example when downloading SP2 of XP from MS
server).

Are the Linux networking settings OK for this kind of latency, or do I
have to change some settings?

Thanks in advance.

On Mon, 05 Nov 2007 01:43:54 +0200, john wrote:
> Hi, I am using Linux at home, ADSL ~16 Mbps/~1 Mbps Internet connection

Nice ADSL speeds.

> and my ping time to my ISP is 160-170 msec.

Is that the time to your ISP's gateway given to your modem?
If so, that is pretty bad.

I have 15/2 fios service and I get

--- isp_gateway ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 8999ms
rtt min/avg/max/mdev = 7.601/7.853/7.943/0.108 ms

john <(E-Mail Removed)> writes:

>Hi, I am using Linux at home, ADSL ~16 Mbps/~1 Mbps Internet connection

Why do you think that those are the speeds you are getting? Is that what
the people selling the adsl to you claim, or speeds you have actually
measured.

>and my ping time to my ISP is 160-170 msec.

>When downloading something with Firefox, I am getting download speeds of
>about 100-180 KB/sec (for example when downloading SP2 of XP from MS
>server).

That sounds more like 1-2 Mb/s donload.


>Are the Linux networking settings OK for this kind of latency, or do I
>have to change some settings?

They are fine AFAIK. I have a 2Mb adls, and I get your kinds of speed. My
son has a 6Mb/s ADSL and he gets downloads of 500-600KB/s as you would
expect. In his case his adsl modem reports that the connection is 5-6Mb/s
as well.

All of this is using the stock Mandriva 2007.1, no changes or tweaks.


>Thanks in advance.

john <(E-Mail Removed)> writes:

>This is a multi-part message in MIME format.
>--------------070408020303000207050603
>Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>Content-Transfer-Encoding: 7bit

>Bit Twister wrote:
>> On Mon, 05 Nov 2007 01:43:54 +0200, john wrote:
>>> Hi, I am using Linux at home, ADSL ~16 Mbps/~1 Mbps Internet connection
>>
>> Nice ADSL speeds.
>>
>>> and my ping time to my ISP is 160-170 msec.
>>
>> Is that the time to your ISP's gateway given to your modem?
>> If so, that is pretty bad.

>It is the ping time mentioned by www.speedtest.net, which is using a
>speedtest server of my ISP.

>I am sending a screenshot attached from the speedtest.


>>
>> I have 15/2 fios service and I get
>>
>> --- isp_gateway ping statistics ---
>> 10 packets transmitted, 10 received, 0% packet loss, time 8999ms
>> rtt min/avg/max/mdev = 7.601/7.853/7.943/0.108 ms


>When I ping to speedtest.ontelecoms.gr in terminal it outputs:

>[john@localhost ~]$ ping -c 10 speedtest.ontelecoms.gr
>PING speedtest.ontelecoms.gr (91.132.5.198) 56(84) bytes of data.
>64 bytes from speedtest.ontelecoms.gr (91.132.5.198): icmp_seq=1 ttl=251
>time=25.7 ms
>64 bytes from speedtest.ontelecoms.gr (91.132.5.198): icmp_seq=2 ttl=251
>time=25.2 ms
>64 bytes from speedtest.ontelecoms.gr (91.132.5.198): icmp_seq=3 ttl=251
>time=25.4 ms
>64 bytes from speedtest.ontelecoms.gr (91.132.5.198): icmp_seq=4 ttl=251
>time=24.3 ms
>64 bytes from speedtest.ontelecoms.gr (91.132.5.198): icmp_seq=5 ttl=251
>time=24.7 ms
>64 bytes from speedtest.ontelecoms.gr (91.132.5.198): icmp_seq=6 ttl=251
>time=24.6 ms
>64 bytes from speedtest.ontelecoms.gr (91.132.5.198): icmp_seq=7 ttl=251
>time=24.6 ms
>64 bytes from speedtest.ontelecoms.gr (91.132.5.198): icmp_seq=8 ttl=251
>time=25.4 ms
>64 bytes from speedtest.ontelecoms.gr (91.132.5.198): icmp_seq=9 ttl=251
>time=24.6 ms
>64 bytes from speedtest.ontelecoms.gr (91.132.5.198): icmp_seq=10
>ttl=251 time=24.7 ms

>--- speedtest.ontelecoms.gr ping statistics ---
>10 packets transmitted, 10 received, 0% packet loss, time 8998ms
>rtt min/avg/max/mdev = 24.363/24.978/25.738/0.444 ms

>[john@localhost ~]$

>Now why does it mention 8998ms, while www.speedtest.net mentions 165 ms?

It mentions 8998 ms because that is how long it has been run for.
That is nothing to do with teh return time of ping.




>Do I need to make any networking changes?

On Mon, 05 Nov 2007 01:43:54 +0200, john <(E-Mail Removed)> wrote:


>Hi, I am using Linux at home, ADSL ~16 Mbps/~1 Mbps Internet connection
>and my ping time to my ISP is 160-170 msec.

>When downloading something with Firefox, I am getting download speeds of
>about 100-180 KB/sec (for example when downloading SP2 of XP from MS
>server).

>Are the Linux networking settings OK for this kind of latency, or do I
>have to change some settings?

There's is nothing to set, nothing to optimize. Your connection is primarily
limited by the fact that microsoft a while back decided to use their own
OS for their web servers.

Try speedtest.net and/or kernel.org for a better test.

On Mon, 05 Nov 2007 02:50:26 +0200, john rearranged some electrons to say:

>
>
> Now why does it mention 8998ms, while www.speedtest.net mentions 165 ms?

That is the total time the ping command ran.